Converting Cisco IOS Configurations to Cisco IOS XR Configurations

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 Converting Cisco IOS Configurations Converting Sign up to vote on this title to Cisco IOS XR Configurations  Useful  Not useful Cisco IOS XR Software Software Release 3.3

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THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WI WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUC

THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACK SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWAR OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of U domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.

NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “ ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOU LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A CO DEALING, USAGE, OR TRADE PRACTICE.

IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO D ATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EV OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

CCVP, the Cisco logo, and Welcome to the Human Network are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn is a Cisco Systems, Inc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSw Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, LightStream, Linksys, MeetingPlace, MGX, Networkers, Networking Academy, Network Registrar, PIX, ProConnect, ScriptShare, SMARTnet, StackWise, The Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.

All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnersh between Cisco and any other company. (0710R)

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figur es incl document are shown for illustrati ve purposes only. Any use of actual IP addresses in illustrative content is unintenti onal and coincidental. Converting Cisco IOS Configurations to Cisco IOS X R Configurations Copyright © 2006 Cisco Systems, Inc. All ri ghts reserved.

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THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WI WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUC

THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACK SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWAR OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of U domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.

NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “ ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOU LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A CO DEALING, USAGE, OR TRADE PRACTICE.

IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO D ATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EV OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

CCVP, the Cisco logo, and Welcome to the Human Network are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn is a Cisco Systems, Inc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSw Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, LightStream, Linksys, MeetingPlace, MGX, Networkers, Networking Academy, Network Registrar, PIX, ProConnect, ScriptShare, SMARTnet, StackWise, The Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.

All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnersh between Cisco and any other company. (0710R)

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figur es incl document are shown for illustrati ve purposes only. Any use of actual IP addresses in illustrative content is unintenti onal and coincidental. Converting Cisco IOS Configurations to Cisco IOS X R Configurations Copyright © 2006 Cisco Systems, Inc. All ri ghts reserved.


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R3.3.0 FCS Draft—Cisco Confidential Information

Contents Preface

v

Changes to This Document Obtaining Documentation Cisco.com

v v

v

Documentation DVD

vi

Ordering Documentation Documentation Feedback

vi

vi

Cisco Product Security Overview

vii

Reporting Security Problems in Cisco Products Obtaining Technical Assistance

vii

viii

Cisco Technical Support & Documentation Website Submitting a Service Request

viii

viii

Definitions of Service Request Severity

ix

Obtaining Additional Publications and Information

ix


Converting Cisco IOS Configuratio C onfigurations ns to Cisco IOS XR Configuration Configurationss 1 Contents

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R3.3 Beta Draft—Cisco Confidential Information

Border Gateway Protocol (BGP) Multicast

13

20

Multiprotocol Label Switching (MPLS)

21

Minor Differences and Adjustments Label Distribution Protocol (LDP) Traffic Engineering (TE) Quality of Service (QoS) IPv6

21 22

22

24

26

Other Cisco IOS XR Issues Access Lists

27

27

Username Configuration and Permission Levels Network Time Protocol (NTP)

28

29

Hot Standby Router Protocol (HSRP) and Virtual Router Redundancy Protocol (VRRP) Line Configurations

30

Translating Cisco IOS Route Maps to Cisco IOS XR Routing Policy Language Introduction and Overview

31

Original Route Map Configuration A Simple Translation

31

32

33

Using Nested Conditionals to Reduce Repetitive Comparisons Using Inline Sets to Remove Small Indirect Set References

34

36

Taking Advantage of Parameterization to Reuse Common Structures

37

INDEX


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Preface

This document describes how to convert Cisco IOS software configurations to Cisco IOS configurations. This preface for Converting Cisco IOS Configurations to Cisco IOS XR C contains the following sections: 

Changes to This Document, page v

•

Obtaining Documentation, page v

•

Documentation Feedback, page vi

•

Cisco Product Security Overview, page vii

•

Obtaining Technical Assistance, page viii

•

Obtaining Additional Publications and Information, page ix

Changes to This Document Tabl able 1

Chan hanges for Thi This s Doc Docu ume ment nt

Revision

Date

Change Summary Sign up to vote on this title

O L-8 503 -01

S e p t e mb e r 2 0 0 7

Add ed Conversion Procedure, page 2

O L-8 503 -01

A pril 2 006

Initial release of this do cument.

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Documentation Feedback

You can access international Cisco websites at this URL: http://www.cisco.com/public/countries_languages.shtml

Documentation DVD

Cisco documentation and additional literature are available in a Documentation DVD packag may have shipped with your product. The Documentation DVD is updated regularly and may current than printed documentation. The Documentation DVD package is available as a sing

Registered Cisco.com users (Cisco direct customers) can order a Cisco Documentation DVD number DOC-DOCDVD=) from the Ordering tool or Cisco Marketplace. Cisco Ordering tool: http://www.cisco.com/en/US/partner/ordering/ Cisco Marketplace: http://www.cisco.com/go/marketplace/

Ordering Documentation You can find instructions for ordering documentation at this URL: http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm You're Reading a Preview You can order Cisco documentation in these ways:

Unlock full access with a free trial.

•

Registered Cisco.com users (Cisco direct customers) can order Cisco product documenta the Ordering tool:

Download With Free Trial

http://www.cisco.com/en/US/partner/ordering/

Nonregistered Cisco.com users can order documentation through a local account representati calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewh North America, by calling 1 800 553-NETS (6387). 


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Preface

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Cisco Product Secu

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Cisco Product Security Overview Cisco provides a free online Security Vulnerability Policy portal at this URL: http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html From this site, you can perform these tasks: •

Report security vulnerabilities in Cisco products.

•

Obtain assistance with security incidents that involve Cisco products.

•

Register to receive security information from Cisco.

A current list of security advisories and notices for Cisco products is available at this UR http://www.cisco.com/go/psirt

If you prefer to see advisories and notices as they are updated in real time, you can acces Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed from this http://www.cisco.com/en/US/products/products_psirt_rss_feed.html

Reporting Security Problems in Cisco Products

Cisco is committed to delivering secure products. We test our products internally before w and we strive to correct all vulnerabilities quickly. If you think that you might have identi vulnerability in a Cisco You're product,Reading contact PSIRT: a Preview •

Emergencies — [email protected]


An emergency is either a condition in which a system is under active attack or a condi a severe and urgent security vulnerability should be reported. All other conditions are Download With Free Trial nonemergencies. •

Nonemergencies — [email protected]

In an emergency, you can also reach PSIRT by telephone: •

1 877 228-7302

•

1 408 525-6532


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Obtaining Technical Assistance

Obtaining Technical Assistance

For all customers, partners, resellers, and distributors who hold valid Cisco service contracts Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco T Support Support and Docu mentation Website on Cisco.com features extensive online support In addition, Cisco Technical Assistance Center (TAC) engineers provide teleph one support. If hold a valid Cisco service contract, contact your reseller.

Cisco Technical Support & Documentation Website

The Cisco Technical Support & Documentation website provides online documents and tools troubleshooting and resolving technical issues with Cisco products and technologies. The we available 24 hours a day, at this URL: http://www.cisco.com/techsupport

Access to all tools on the Cisco Technical Support & Documentation website requires a Cisco ID and password. If you have a valid service contract but do not have a user ID or password, register at this URL: http://tools.cisco.com/RPF/register/register.do

Note

Use the Cisco Product Identification (CPI) tool to locate your product serial number before s You're Reading a Preview a web or phone request for service. You can access the CPI tool from the Cisco Technical Su Documentation website by clicking the Tools & Resources link under Documentation & Too Unlock full access with a free trial. Cisco Product Identification Tool from the Alphabetical Index drop-down list, or click the Product Identification Tool link under Alerts & RMAs. The CPI tool offers three search op product ID or model name; by tree view; With or for Free certain produ cts, by copying and pasting show Download Trial output. Search results show an illustration of your product with the serial number label locat highlighted. Locate the serial number label on your product and record the information before service call.


Submitting a Service Request

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Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requ

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Preface



Obtaining Additional Publications an

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For a complete list of Cisco TAC contacts, go to this URL: http://www.cisco.com/techsupport/contacts

Definitions of Service Request Severity To ensure that all service requests are reported in a standard format, Cisco has establishe definitions.

Severity 1 (S1)—Your network is “d own,” or there is a critical impact to your business op and Cisco will commit all necessary resources around the clock to resolve the situation.

Severity 2 (S2)—Operation of an existing network is severely degraded, or significant as business operation are negatively affected by inadequate performance of Cisco p roducts. Y will commit full-time resources during normal business hours to resolve the situation.

Severity 3 (S3)—Operational performance of your network is impaired, but most busines remain functional. You and Cisco will commit resources during normal business hours to r to satisfactory levels.

Severity 4 (S4)—You require information or assistance with Cisco product capabilities, in configuration. There is little or no effect on your business operations.

Obtaining Additional Publications and Information You're Reading a Preview

Information about Cisco products, technologies, and network solutions is available from v Unlock full access with a free trial. and printed sources. •

Cisco Marketplace provides a variety of Cisco books, reference guides, documentati Download With Free Trial merchandise. Visit Cisco Marketplace, the company store, at this URL: http://www.cisco.com/go/marketplace/

•

Cisco Press publishes a wide range of general networking, training and certification ti and experienced users will benefit from these publications. For current Cisco  Press ti Sign up to vote on this title information, go to Cisco Press at this URL:

http://www.ciscopress.com •

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Obtaining Additional Publications and Information

• Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineer professionals involved in designing, developing, and operating public and private interne intranets. You can access the Internet Protocol Journal at this URL:

http://www.cisco.com/ipj •

Networking products offered by Cisco Systems, as well as customer support services, ca obtained at this URL: http://www.cisco.com/en/US/products/index.html

•

Networking Professionals Connection is an inte ractive website for networking professiona questions, suggestions, and information about networking products and technologies wit experts and other networking professionals. Join a discussion at this URL: http://www.cisco.com/discuss/networking

•

World-class networking training is available from Cisco. You can view current offerings this URL: http://www.cisco.com/en/US/learning/index.html

You're Reading a Preview Unlock full access with a free trial.



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This module describes the conversion of a Cisco IOS configuration to a Cisco IOS XR co is not a complete guide to converting every command or configuration from Cisco IOS to Cisco IOS XR software, but it covers only the most commonly used features. There may Cisco IOS that you are interested in that do not appear in this document.

The configurations presented here use Cisco IOS XR Software Release 3.3.0 as a referen

This document is not an introduction to Cisco IOS XR software, nor is it an introduction features you can configure in Cisco IOS XR software. It assumes that you are familiar wi differences in operating You're infrastructure between Cisco IOS and Cisco IOS XR software an Reading a Preview know how the protocols work. Unlock full access with a free trial.

Contents

Download With Free Trial •

Conversion Procedure, page 2

•

General Differences Between Cisco IOS and Cisco IOS XR Software, page 2

•

Sign upXR to vote on thispage title 3 Cisco IOS Configurations Absent From Cisco IOS Software,

•

Useful Not useful That Same, Cisco IOS and Cisco IOS XR Configurations Are the page 5

•

Cisco IOS Configurations That Are Similar in Cisco IOS XR, page 6

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Converting Cisco IOS Configurations to Cisco IOS XR

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Conversion Procedure

Conversion Procedure

In general, the method of conversion is to proceed line-by-line over the Cisco IOS configura the information in this conversion guide to look up and create the equivalent configuration c for Cisco IOS XR software.

Note

If you have many nodes in your network on which you plan to convert your configurations, yo consider contacting Cisco Advanced Services to help expedite the conversion.

Step 1

Before you install Cisco IOS XR software, convert any Cisco IOS commands for configurati want to keep to Cisco IOS XR configuration commands, creating a text file containing the de XR configurations.

Step 2

Install the Cisco IOS XR software according to the instructions in Migrating from Cisco IOS IOS XR Software on the Cisco XR 12000 Series Router.

Step 3

After installing the Cisco IOS XR software, reconfigure your router using the Cisco IOS XR configuration commands you developed in step 1. You can reconfigure your router using one methods:

Note

•

Enter the new CLI configuration commands line-by-line at the approp riate configuration using the IOS XR configurations you created as a reference. You must enter the commit to make new configurations part of the running configuration. You can enter the commit after entering a configuration each submode or enter the command in the global confi You'reatReading a Preview mode after entering all the new configurations.

•

Go to global configuration mode and copy and paste the entire text file containing the ne configuration at the command prompt, then enter the commit replace command to replace running configuration. Download With Free Trial


As the commands are parsed, error messages might displayindicating incorrect commands or


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General Differences Between Cisco IOS and Cisco IOS XR

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Cisco IOS Configurations Absent From Cisco IOS

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•

Think before you add or remove features. Is the feature really something you use, or ar carrying it over because it is in your Cisco IOS configuration?

•

Test changes carefully and ask for help if you are having difficulty.

After you have converted an existing Cisco IOS configuration to a working Cisco IOS XR configuration, you might want to try some of the additional features in Cisco IO S XR softw information on these features, consult the standard Cisco IOS XR configuration guides: •

Cisco IOS XR IP Addresses and Services Configuration Guide

•

Cisco IOS XR Interface and Hardware Component Configuration Guide

•

Cisco IOS XR Multicast Configuration Guide

•

Cisco IOS XR Multiprotocol Label Switching Configuration Guide

•

Cisco IOS XR Modular Quality of Service Configuration Guide

•

Cisco IOS XR Routing Configuration Guide

•

Cisco IOS XR System Management Configuration Guide

•

Cisco IOS XR System Security Configuration Guide

Cisco IOS Configurations Absent From Cisco IOS XR Soft

In Table 2 are some of the Cisco IOS configurations that do not exist in Cisco IOS XR so You're Reading a Preview Cisco IOS column contains either a configuration string or a partial configuration string. (like ip tftp …), that means that only the top level text has changed and options past the Unlock full access with a free trial. the same in Cisco IOS and Cisco IOS XR software.

The Cisco IOS XR column contains the text “No such configuration” or “No such keywo Download Free Trial in Cisco IOS cannot be configure configuration” means that the serviceWith that is configured Cisco IOS XR software. largely because the feature does not exist. An example is the Cisc command. “No such keyword” means that, although the con figuration exists, the specific k in the Cisco IOS configuration does not exist in CCisco IOS XR software. Both types of also have a comment explaining what happened to the Cisco IOS functionality.


Table 2

Cisco IOS

List of Cisco IOS Configurations Do Not Exist Cisco IOS XR So Useful Notin useful That

Cisco IOS XR Software

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Cisco IOS Configurations Absent From Cisco IOS XR Software

Table 2

List of Cisco IOS Configurations That Do Not Exist in Cisco IOS XR Softw

Cisco IOS


access-list number

No such configuration. All ACLs are configured using ipv4 access-list see the ACL section later on.

boot system ...

No such configuration.

The Cisco IOS XR boot model is very different Cisco IOS boot model. enable

No such configuration. You must have a username. The password and ability are defined within the username and t set of commands.

ip bgp-community new-format


Community-lists, which support old-style numb being phased out. See also the extensive section Gateway Protocol (BGP) later in this document ip bootp server


No BOOTP server exists in Cisco IOS XR softw ip classless

such configuration, You're ReadingNo a Preview

Cisco IOS XR software fully supports classless

Unlock full access with a free trial. routing (CIDR) and variable-length interdomain

mask (VLSM). Classful routing does not exist i Download WithCisco FreeIOS TrialXR software, so no classless enable ip finger

No such keyword.

There is no finger daemon on Cisco IOS XR so ip receive …




SignXR up software to vote ondoes this not titlesupport receiv Cisco IOS ip spd

configuration.  No such Useful

Not useful

Selective Packet Discard (SPD) does not exist i Cisco IOS XR software, in which Local Packet

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

Cisco IOS and Cisco IOS XR Configurations That

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Table 2

List of Cisco IOS Configurations That Do Not Exist in Cisco IOS XR S

Cisco IOS


no service pad


service compress-config


Configuration file management is very diffe Cisco IOS and Cisco IOS XR software service nagle


nagle is on by default, and this cannot be ch user. service password-encryption

No such configuration. You cannot have unencrypted passwords in Cisco IOS XR software

service tcp-keepalives-in


In Cisco IOS XR software, it is up to the ap decide whether to use keepalives or not, and is configurable. The telnet server sends keepa minutes. Telnet client does not send them. O TCP-based protocols (B GP, SSH, and so on) built-in keepalive values.

You're Reading a Preview service tcp-keepalives-out No such configuration. service upgrade all tag-switching …

Unlock full access with aNo freesuch trial.configuration.


Download With Free All Trial the tag-switching CLI is gone, replaced Multiprotocol Label Switching (MPLS) version





Cisco IOS and Cisco IOS XR Configurations Are the Not useful  Useful That

A list of some of the configurations that are identical in Cisco IOS and Cisco IOS XR sof

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Cisco IOS Configurations That Are Similar in Cisco IOS XR

Cisco IOS Configurations That Are Similar in Cisco IOS XR

The following table lists some of the Cisco IOS configurations that differ from their Cisco IO counterparts in minor ways. The Cisco IOS column contains either a configuration string or configuration string. If it is partial like ip tftp …, only the top level text has changed and op the listed text are the same in Cisco IOS and Cisco IOS XR software.

The Cisco IOS XR column contains an explanation of the differences between the two config Table 4

Cisco IOS Configurations That are Similar in Cisco IOS XR software

Cisco IOS


aaa authentication login name tacacs+

aaa authentication login name group tacacs+

Note the group before tacacs+; this is common aaa…tacacs+ commands. aaa authorization commands level {default | list-name} tacacs+

aaa authorization commands {default | list-n group tacacs+

Note the lack of a level, because Cisco IOS XR permissions are different from those of Cisco IO aaa accounting exec {default | list-name } {start-stop | stop-only} tacacs+

aaa accounting exec {default | list-name} { stop-only} group tacacs+

the group before tacacs+. You're ReadingNote a Preview

aaa accounting commands level {default aaa accounting commands {default | list-nam Unlock full access with a free trial. stop-only} group tacacs+ | list-name} {start-stop | stop-only} {start-stop | tacacs+ Note the lack of a level; see also the taskgroup Download Withbelow. Free Trial ip tcp path-mtu-discovery

tcp path-mtu-discovery age-timer minutes

ip telnet source-interface

telnet ipv4 client source-interface

ip tftp …

tftp client …

ip ftp ...

ftp client ...

ip name-server

domain name-server

ip route network mask

/ masklen ... route ipv4 network


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Basic Interface

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Table 4

Cisco IOS Configurations That are Similar in Cisco IOS XR software

Cisco IOS


line {aux | console} 0

line {aux | console}

No line number is necessary. See also the V later in this document. logging buffered 1000000 debugging

The debug level and the buffer size are now commands: logging buffered 150000 logging buffered debugging

Basic Interface Configuration A few differences in interface configuration are shown in the examples below: Table 5

Basic Interface Configuration in Cisco IOS and Cisco IOS XR Softwar

Cisco IOS


interface POS2/1

interface POS0/2/0/1

ip address 192.168.14.5 255.255.255.0 no ip directed-broadcast crc 32

mtu 4474 ipv4 address 192.168.14.8 255.

You're Reading a Preview

pos

clock source internal pos ais-shut pos scramble-atm end


crc 32 !

!

Download With Free Trialcontroller

SONET0/2/0/1

ais-shut path ais-shut ! clock source internal

Sign! up to vote on this title

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The major differences are as follows: •

Cisco IOS XR software has of a separate mode for configuring SONET.

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IPv4 Unicast Routing and Forwarding

For further information on SONET controller configuration and PoS configurations, includin HDLC, see the following configuration guide and command reference modules:

Note

•

The Configuring SONET Controller Interfaces on Cisco IOS XR Software module of the Cisco IOS XR Interface and Hardware Component Configuration Guide

•

The Configuring POS Interfaces on Cisco IOS XR Software module of the Cisco IOS XR Interface and Hardware Component Configuration Guide

•

The Packet-over-SONET User Interface and SONET Layer-1 Commands on Cis co IOS X module of the Cisco IOS XR Interface and Hardware Component Command Reference

•

The SONET APS Commands on Cisco IOS XR Software module of the Cisco IOS XR Int Hardware Component Command Reference

•

The cHDLC Commands on Cisco IOS XR Software module of the Cisco IOS XR Interfa Hardware Component Command Reference

•

The PPP Commands on Cisco IOS XR Software module of the Cisco IOS XR Interface a Hardware Component Command Reference

The other interface type supported in Cisco IOS XR software is the Gigabit Ethernet (GigE) The GigE interface does not have a controller submode and, therefore, configuration of GigE to configuration of GigE in Cisco IOS.

Reading a Preview IPv4 Unicast Routing and You're Forwarding


This section contains the following parts: •

General IP Routing, page 8 Download With Free Trial

•

Intermediate System-to-Intermediate System (IS-IS), page 9

•

Open Shortest Path First (OSPF), page 11

•

Border Gateway Protocol (BGP), page 13

•

Multicast, page 20

General IP Routing


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IPv4 Unicast Routing an

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Table 6

Examples of Cisco IOS Commands Replaced by the Cisco IOS XR rout

Cisco IOS


Example of the IS-IS router-id command:

router-id Loopback0

router isis mpls traffic-eng router-id Loopback0

Example of the OSPF router-id command: router ospf router-id ip_address_of_Loopback0 mpls traffic-eng router-id Loopback0

Example of the BGP router-id command: router bgp bgp router-id ip_address_of_Loopback0

You can override the global router-id command in Cisco IOS XR software by further co router-id command within a given protocol. However, configuring different router IDs p makes management more complicated and provides no gain, so we do not recommend thi For more information about the router-id command, see the following configuration gui command reference modules:


•

The Implement ing Network Stack IPv4 and I Pv6 o n Ci sco IOS X R Software module Cisco IOS XR IP Addresses Services Configuration Guide Unlock fulland access with a free trial.

•

The Netw ork Stack IPv4 and IPv6 Commands on Cisco IOS XR Softw are module of Cisco IOS XR IP Addresses and Services Command Reference

•

The Implement ing Label Distribut ion Protoco l on Cisco IOS XR Software module of Cisco IOS XR Multiprotocol Label Switching Configuration Guide

•

The Implement ing Opti cal User Netw ork Interface on Cisco IOS X R Software modul  Cisco IOS XR Multiprotocol Label Switching Configuration Guide

•

IOS X R Software The MPLS Label Di stri bution Commands on Cisco module of the  Useful  Not useful Multiprotocol Label Swit ching Comm and R eferenc e

•

The Implement ing Opti cal User Netw ork Interface on Cisco IOS X R Software modul



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•

Cisco IOS XR software does not support Connectionless Network Services (CLNS) rou

•

Cisco IOS XR software defaults to multitopology mode for IPv6 (see the “IPv6” section l document).

•

Cisco IO S XR software must have a process name, such as router isis lab, whereas Cisco be configured with just router isis.

A sample configuration for IPv4 routing only is given in the Table 7. This is for a very simp consisting of a router (Router ID: 192.168.1.5) configured with a PoS interface (POS2/1) un Cisco IOS, and another router (Router ID:192.168.1.8) configured with a PoS interface (POS under Cisco IOS XR software. Table 7

Configuration Comparison for IPv4 in Cisco IOS and Cisco IOS XR

IOS (Router ID:192.168.1.5)

IOS XR (Router ID:192.168.1.8)

router isis lab net 49.0192.0168.0001.0005.00

router isis lab is-type level-2-only

is-type level-2-only

net 49.0192.0168.0001.0008.00

passive-interface Loopback0

interface Loopback0

! interface POS2/1

passive address-family ipv4 unicast

... ip router isis lab isis metric 42

! ! interface POS0/2/0/1

...

address-family ipv4 unicast metric 42

You're Reading a Preview! !

Unlock full access with a free!trial.

The largest change difference Cisco IOSWith and Cisco Download Free IOS TrialXR software is that in Cisco IOS XR you need to enable the ipv4 address family explicitly, whereas in Cisco IOS it is implicitly enab or all of the IS-IS options in Cisco IOS also exist in Cisco IOS XR. Another difference is tha very few CLNS commands in Cisco IOS XR; most of the show clns options in Cisco IOS are show isis command in Cisco IOS XR software.



Sign upistothat voteinstead on thisof title Redistribution for IS-IS is very similar; the only difference a route-map (as Cisco IOS), you specify a route-policy. Thus, redistribution into Cisco IOS XR  Useful  Not useful software is a point for an RPL route-policy. See Table 8.

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Table 9

Comparison of the redistribute connected command on Cisco IOS and

Cisco IOS

Cisco IOS XR

Router#redistribute connected ? level-1

RP/0/0/CPU0:gsr4(config-isis-af)# redistribut ?

level-1-2

level-1

Redistribute routes into lev

level-2 metric

level- 1-2 level-2

Redistribute routes into bot Redistribute routes into lev

metric-type

(the default)

route-map

metric metric-type

Metric for redistributed rou IS-IS metric type for redist

routes route-policy Route policy reference

IS-IS configurations for multitopology are slightly different, as well; see the sections on Label Switching (MPLS) and IPv6 for details.

For further information on IS-IS configuration, see the following configuration guide and reference modules: •

The Implement ing IS-IS on Cisco IOS XR Softw are module of the Cisco IOS XR Rou Configuration Guide

•

The IS-IS Commands on Cisco IOS XR Softw are module of the Cisco IOS XR Routin Reference


Unlock full access with a free trial. Open Shortest Path First (OSPF)

With Free Trial An OSPF configuration Download is very similar to an IS-IS configuration. A sample configuration routing only is given in Table 10 below. This is for a very simple network consisting of a ID:192.168.1.5) configured with a PoS interface (POS2/1) under Cisco IOS, and another ID:192.168.1.5) configured with a PoS interface (POS0/2/0/1) under Cisco IOS XR softw

The main point in this description is that redistribution into OSPF on Cisco IOSXR softw Sign up to vote on this title policy-attach point.

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Table 10

OSPF Configuration for Cisco IOS and Cisco IOS XR

Cisco IOS (Router ID:192.168.1.5)

Cisco IOS XR (Router ID:192.168.1.8)

router ospf 1 log-adjacency-changes

router ospf lab log adjacency changes

passive-interface Loopback0

area 0

network 192.168.1.0 0.0.0.255 area 0 network 192.168.7.0 0.0.0.255 area 0

interface Loopback0 passive enable

network 192.168.12.0 0.0.0.255 area 0

!

network 192.168.13.0 0.0.0.255 area 0 network 192.168.14.0 0.0.0.255 area 0

interface POS0/1/0/1 !

network 192.168.18.0 0.0.0.255 area 0


network 192.168.20.0 0.0.0.255 area 0

! interface POS0/2/0/1

! interface Loopback0

cost 17

ip address 192.168.1.5 255.255.255.255


! interface POS2/1

!

ip address 192.168.14.5 255.255.255.0 ip ospf cost 17

! mpls traffic-eng area 0 !

Note that the network statement in Cisco IOS has been replaced by enabling the inte rface unde keyword inside OSPF. Also, OSPF does not need an address-family ipv4 unicast command or IS-IS. This is because router ospf implies support for unicast IPv4. Cisco does not suppor and unicast IPv6 has its ownYou're routingReading protocol,aconsisting Preview of the router ospfv3 family of com

Redistribution is a little different as well. Table 11 gives examples of redistribution configur Unlock full access with a free trial. Cisco IOS and Cisco IOS XR software. Table 11

Redistribution Configurations for OSPF Download With Free Trialin Cisco IOS and Cisco IOS XR

Cisco IOS

Cisco IOS XR

router ospf 1

router ospf lab

redistribute connected subnets redistribute static subnets route-map map

redistribute connected  redistribute Sign up to vote onstatic this titlepolicy



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You no lon ger need the subnets keyword in Cisco IOS XR software. Instead, you declare an route-policy rather than a route map.

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Border Gateway Protocol (BGP) This section is divided into the following areas: •

Introduction and General Examples, page 13

•

Address-Family Parameters, page 14

•

Session Parameters, page 15

•

BGP Neighbors, page 15

•

Building a Route Policy, page 17

•

Neighbor Independent Issues, page 19

Introduction and General Examples

BGP is the largest piece of conversion work to be done when migrating to Cisco IOS XR s is also where Route Policy Language (RPL) is used most heavily, so this is where RPL is Because this document focuses on configuration conversion, and because it is not an RPL treatment of RPL is not complete. For more information on RPL, see the following config and command reference modules: •

The Implement ing Routing Policy o n Cisco IOS X R Softwa re module of the Cisco IO Configuration Guide

•

Language Commands on Cisco IOS X R Software module of the The Routing Policy You're Reading a Preview Routing Command R eferenc e

Unlock full accessthat withitais free trial. going over several sample configur BGP configuration is complex enough worth

First, let us start with a simple IBGP peering between a Cisco IOS router and a Cisco IOS Download Withhas Free Trial For these examples, the Cisco IOS router an IP address of 192.168.1 .5, and the Cisco I has an IP address of 192.168.1.8. Table 12

Basic BGP Configuration Between a Cisco IOS Router and a Cisco IO

Cisco IOS (Router ID: 192.168.1.5) router bgp 3402

 SignCisco up toIOS voteXRon(Router this title ID: 192.168.1. router bgp 3402useful  Useful  Not

no synchronization

address-family ipv4 unicast

bgp log-neighbor-changes neighbor 192.168.1.8 remote-as 3402

! neighbor 192.168.1.4

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The most important thing to learn fro m the above configuration is that you can configure every need by using the neighbor submode. Also, Cisco IOS XR software lets you break the BGP configuration down into separate building blocks that can be reused to build a more modular readable configuration.

Address-Family Parameters

Two building blocks for basic BGP neighbor configuration are supported in Cisco IOS XR s address-family groups (referred to in a configuration as an af-group) and session groups (ref a configuration as a session-group). For more discussion of session groups see the Session P of this document.

You configure properties of different address families using the af-group keyword. The foll address-family groups are supported for Cisco IOS XR Software Release 3.3.0:

Note

•

IPv4 unicast

•

IPv4 multicast

•

IPv6 unicast

•

IPv6 multicast

A given address family is only supported with a neighbor whose address is from that address f instance, IPv4 neighbors support IPv4 unicast and multicast address families, and IPv6 neigh support IPv6 unicast and multicast families. However, you cannot exchange IPv6 rou You're address Reading a Preview information with an IPv4 neighbor and vice versa. Unlock full access with a free trial.

Inside an af-group, you configure properties specific to the exchange of information for a sp address family. Download With Free Trial

Table 13 shows a more complex example of an IBGP peering between a Cisco IOS router (R 192.168.1.5) and a Cisco IOS XR router (Router ID 192.168.1.8): Table 13

BGP Configuration Using an af-group

Cisco IOS (Router ID:192.168.1.5) router bgp 3402 no synchronization

 Sign up to vote on this title Cisco IOS Not(Router useful ID:192.168.  Useful  XR router bgp 3402

af-group test address-family

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Session Parameters

Session-groups are conceptually very similar to af-groups, except that they allow you to c properties of a BGP session itself rather than configure properties of a specific address fa Table 14

BGP Configuration Using session-group for Cisco IOS XR

Cisco IOS

Cisco IOS XR

router bgp 3402

router bgp 3402

no synchronization

af-group test address-fam

bgp log-neighbor-changes

unicast

neighbor 192.168.1.8 remote-as 3402 neighbor 192.168.1.8 password 7 045D0409

weight 50 maximum-prefix 75 75

neighbor 192.168.1.8 update-source Loopback0

soft-reconfiguration i

neighbor 192.168.1.8 soft-reconfiguration inbound

! session-group example

neighbor 192.168.1.8 weight 50

remote-as 3402

neighbor 192.168.1.8 maximum-prefix 75

password encrypted 130

no auto-summary

update-source Loopback0

!

! neighbor 192.168.1.5

use session-group examp address-family ipv4 un use af-group test ! !


!

Unlock fulladded accessbetween with a free trial. In this example, a password was the neighbors; in Cisco IOS XR software session-group, because it is a property of the session rather than a property of the address instead of the Cisco IOSDownload keyword syntax Withpassword Free Trial0 or password 7, Cisco IOS XR use syntax password clear or password encrypted.

BGP Neighbors



Sign upequivalent to vote onof this title IOS’ peer-gro The next major configuration task is the Cisco IOS XR Cisco Cisco IOS XR calls them neighbor-groups rather  thanUseful pe er-groups, butuseful the function is the s  Not versions of Cisco IOS, the concept of dynamic update-groups was added to separate polic from neighbor grouping. Cisco IOS XR software does this as well, so there is no restricti

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Table 15

Configuring BGP by Using Peer Groups in Cisco IOS and Neighbor Group IOS XR Software

Cisco IOS

Cisco IOS XR

router bgp 3402

router bgp 3402

no synchronization

af-group test address-family

bgp log-neighbor-changes neighbor ibgp-peers peer-group

unicast weight 50

neighbor ibgp-peers remote-as 3402

maximum-prefix 75 75

neighbor ibgp-peers password 7 10480616

soft-reconfiguration inbou

neighbor ibgp-peers update-source Loopback0 neighbor ibgp-peers soft-reconfiguration

! session-group example

inbound

remote-as 3402

neighbor ibgp-peers weight 50 neighbor ibgp-peers maximum-prefix 75

password 7 1303181D update-source Loopback0

neighbor 192.168.1.8 peer-group ibgp-peers

!

no auto-summary

neighbor-group ibgp-peers

!

use session-group example address-family ipv4 unicas use af-group test ! ! neighbor 192.168.1.5

use neighbor-group ibgp-pe ! !


Although the Cisco IOS XR configuration is longer, as the number of peers grows, the abstra accessyour withconfigurations a free trial. that Cisco IOS XR softwareUnlock offersfull makes shorter and more manageable.

Another issue to look at is routing policy. Routing policy is applied in Cisco IOS XR softwa Download With Free Trial nt for Cisco IOS route maps. The te Route Policy Language (RPL) and is a powerful replaceme translation table for RPL vs. route-maps is: Table 16

Translation Table Between Cisco IOS Route Maps and Cisco IOS XR RPL

Cisco IOS route-map terminology route-map ip prefix-list

Sign up to XR vote onterminology this title Cisco IOS RPL Useful  Not useful  route-policy prefix-set

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Table 17

EGBP Configurations in Cisco IOS and Cisco IOS XR Software with No

Cisco IOS (Router ID: 192.168.1.5)

Cisco IOS XR (Router ID: 192.168.1.

router bgp 5

router bgp 8 neighbor 192.168.1.5

no synchronization bgp log-neighbor-changes

remote-as 5

neighbor 192.168.1.8 remote-as 8 neighbor 192.168.1.8 ebgp-multihop 255

ebgp-multihop 255 update-source Loopback0

neighbor 192.168.1.8 update-source

!

Loopback0 no auto-summary

!

!

With the above configuration, no routes are sent from or received by the Cisco IO S XR ro configuration is committed, Cisco IOS XR software displays the following message:

%BGP-4-NBR_NOPOLICY: No inbound IPv4 Unicast policy is configured for eBGP nei

192.168.1.5. No IPv4 Unicast prefixes will be accepted from the neighbor until policy is configured.

%BGP-4-NBR_NOPOLICY: No outbound IPv4 Unicast policy is configured for eBGP n 192.168.1.5. No IPv4 Unicast prefixes will be sent to the neighbor until outbo is configured.

A warning also shows when using the show bgp summary command if you do not have configured.


Building a Route Policy


You need both an inbound policy and outbound policy on Cisco IOS XR software. The si is one that allows all routes to pass back forth. Adding this to the configuration, we h Download Withand Free Trial Table 18

EBGP Configuration in Cisco IOS and Cisco IOS XR Software with Inbo Outbound Policies

Cisco IOS router bgp 5 no synchronization bgp log-neighbor-changes neighbor 192.168.1.8 remote-as 8

 Cisco IOSon XRthis Software Sign up to vote title



route-policy permit Useful  Not useful pass

end-policy !

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For more information on writing route policies in Cisco IOS XR software, see the following d •

The Implement ing Routing Policy o n Cisco IOS X R Softwa re module of the Cisco IOS X Configuration Guide

•

The Routing Policy Language Commands on Ci sco IOS XR Softwa re module of the Cisc Routing Comm and R eference

To get the same behavior in Cisco IOS XR software as in Cisco IOS, create the permit route apply it to every address-family (or in the af-group) for all EBGP neighbors.

Combining the EBGP policy configuration with the af-group and session-group configuratio IBGP example, the final configurations are: Table 19

Final Configuration for EBGP for Cisco IOS and Cisco IOS XR Software

Cisco IOS

Cisco IOS XR

router bgp 5

route-policy permit

no synchronization

pass

bgp log-neighbor-changes neighbor ebgp-peers peer-group

!

end-policy

neighbor ebgp-peers remote-as 8

router bgp 8

neighbor ebgp-peers password 7 15140403

af-group test address-family i

neighbor ebgp-peers ebgp-multihop 255 neighbor ebgp-peers update-source Loopback0

unicast weight 50

neighbor ebgp-peers soft-reconfiguration

maximum-prefix 75 75

inbound neighbor ebgp-peers weight 50

soft-reconfiguration inbound route-policy permit in


neighbor ebgp-peers maximum-prefix 75

neighbor 192.168.1.8 peer-group ebgp-peers Unlock full access with a free no auto-summary

trial.

route-policy permit out ! session-group example

!

remote-as 5 password 7 00021C09


ebgp-multihop 255 update-source Loopback0 ! neighbor-group ebgp-peers use session-group example

address-family ipv4 unicast Sign up to vote this title test useon af-group



Useful! !

 Not useful

neighbor 192.168.1.5

use neighbor-group ebgp-peer

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update-source Loopback0 ! neighbor-group ebgp-peers use session-group example address-family ipv4 unicast use af-group test ! ! neighbor 192.168.1.5 remote-as 5 use neighbor-group ebgp-peers ! !

Create a second neighbor group and use inheritance

•

router bgp 8 af-group test address-family ipv4 unicast weight 50 maximum-prefix 75 75 soft-reconfigura tion inbound route-policy permit in route-policy permit out ! session-group example password 7 00021C09 ebgp-multihop 255 update-source Loopback0 !


neighbor-group ASFive

remote-as 5 Unlock full access with use neighbor-group ebgp-peers

a free trial.

! neighbor-group ebgp-peers use session-group example


address-family ipv4 unicast use af-group test ! ! neighbor 192.168.1.5 use neighbor-group ASFive ! !




Useful

 Not useful

The second example hints at the real power you can get with inheritance.

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•

confederation

•

default

•

enforce-first-as

•

fast-external-fallover

•

graceful-restart

•

log

•

receive-buffer-size

•

redistribute-internal

•

router-id

•

scan-time

•

send-buffer-size

•

socket

•

timers bgp keepalive holdtime

•

update-delay

•

write-limit

For further information on BGP configuration, see the following configuration guide and com reference modules: •

Reading Preview on Cisco IOS X RaSoftware The Implement ing BGPYou're module of the Cisco IOS XR Routing Configuration Guide Unlock full access with a free trial.

•

The Implement ing Routing Policy o n Cisco IOS X R Software module of the Cisco IOS X Configuration Guide

•

The BGP Commands on Cisco IOS XR Softw are module of the Cisco IOS XR Routing C Reference

•

The Routing Policy Language Co mmands on Cisco IOS XR Software module of the Cisc Routing Command R eferenc e



Multicast

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Useful

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Table 20

Basic Multicast Configuration on Cisco IOS and Cisco IOS XR Softwa

Cisco IOS

Cisco IOS XR

ip multicast-routing interface POS6/0

multicast-routing address-family interface POS0/6/0/2

ip pim sparse-dense-mode

enable ! !

To change PIM parameters in Cisco IOS XR software, do so in router PIM configuration example, to specify an RP address rather than letting AutoRP discover it, the configuratio Table 21

Changing PIM Parameters for Cisco IOS and Cisco IOS XR Multicast

Cisco IOS

Cisco IOS XR software

ip pim rp-address 1.2.3.4

router pim address-family ipv4 rp-address 1.2.3.4 !

The basic idea in Cisco IOS XR software is this: enabling multicast-routing turns on Aut definition PIM sparse-dense) and also multicast forwarding on any interface you specify. the all keyword allows you to turn on multicast on all interfaces in the router and then selec some of them. If you want to modify your PIM configuration, most of the changes you m You're a Previewscoped boundaries, which have nothi router pim; configurations suchReading as administratively PIM but are instead forwarding-related, are configured under the (config-mcast-ipv4 ) Unlock full access with a free trial.

Download With Free Trial Multiprotocol Label Switching (MPLS) There are three major parts to MPLS configuration on Cisco IOS XR software: •

Minor Differences and Adjustments, page 21

•

Label Distribution Protocol (LDP), page 22

•

Traffic Engineering (TE), page 22




Useful



 Not useful

No support exists in Cisco IOS XR software for static labels, VPNv4 prefixes in BGP, or

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Multiprotocol Label Switching (MPLS)

Label Distribution Protocol (LDP)

The difference in configuration between LDP in Cisco IOS and Cisco IOS XR software is sim difference between OSPF configurations. There is a global mpls ldp submode under which commands exist, including those relevant to an interface. Sample LDP configurations are pre the configurations below: Table 23

LDP Configurations in Cisco IOS and Cisco IOS XR software

Cisco IOS


mpls label protocol ldp

mpls ldp

interface POS2/1


...

!

tag-switching ip


…

interface POS0/2/0/1 ! interface POS0/2/0/2 ! !

Most of the Cisco IOS LDP capabilities also are in Cisco IOS XR software. One notable excep ability to configure an LDP targeted session. You can accept targeted hellos in Cisco IOS XR using the command sequence mpls ldp


discovery targeted-hello accept


and the equivalent to the Cisco IOS command mpls ldp neighbor < nbr > targeted is neighb targeted under the MPLS LDP submode.


Other configurations, such as authentication, timer tuning, and graceful restart are similar in systems. Note that Cisco IOS XR software supports DU mode only, so there are no DoD com

For further information on LDP configuration, see the following configuration guide and com reference modules: 


•

The Implement ing MPLS Label Dist ribution Protocol on Cisco I OS XR Software modul  Useful  Not useful Cisco IOS XR Multiprotocol Label Switching Configuration Guide

•

The MPLS Label Dist ribution Protocol Commands on Ci sco IOS X R Software module o

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A sample configuration for two routers which are tunnel head/tail pairs follows. Table 24

Configuration of Tunnel head/tail Pairs in Cisco IOS and Cisco IOS XR

Cisco IOS


interface Tunnel1

interface tunnel-te1

ip unnumbered Loopback0

ipv4 unnumbered Loopback0

tunnel destination 192.168.1.1 tunnel mode mpls traffic-eng

tunnel destination 192.168.1.1 autoroute announce

tunnel mpls traffic-eng autoroute

path-option 10 dynamic

announce tunnel mpls traffic-eng path-option 10

!

dynamic

mpls traffic-eng

interface POS6/0


...


mpls traffic-eng tunnels ip rsvp bandwidth

! !

interface POS7/0 ...

router ospf lab mpls traffic-eng area 0

mpls traffic-eng tunnels

!

ip rsvp bandwidth rsvp router ospf 1


mpls traffic-eng router-id Loopback0

bandwidth

mpls traffic-eng area 0


! interface POS0/7/0/0 bandwidth !

! Unlock full access with a free trial.

In Cisco IOS XR software, four TE-related submodes Download With Free Trial exist below global configuration m interface, MPLS traffic-eng, IGP, and RSVP. In Cisco IOS, three TE-related submodes ex global configuration mode: tunnel interface, physical interface, and IGP. An IS-IS TE configuration in Cisco IOS XR software is similar to an IS-IS configuration Cisco IOS XR software supports the full range of narrow, transition, and wide metrics th  Sign up to vote on this title supports, and the TE configuration is under the IPv4 address family: router isis lab address-family ipv4 unicast mpls traffic-eng level 2

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Quality of Service (QoS)

Quality of Service (QoS)

The most commonly used QoS element on a Cisco XR 12000 Series Router is the Modular Q (MQC). Converting Cisco IOS MQC to Cisco IOS XR MQC is straightforward because the sy same; the only difference is the available set of capabilities. A list of the matching options fo Cisco IOS XR Software Release 3.3.0 and Cisco IOS 12.0(28)S on a Cisco XR 12000 Series appears in Table 25. Table 25

Matching Options for QoS in Cisco IOS and Cisco IOS XR Configurations

Cisco IOS

Cisco IOS XR

access-group

access-group

any

any

atm

discard-class

cos

dscp

dscp

mpls

fr-dlci

packet

ip

precedence

mpls

protocol

not precedence protocol qos-group vlan

qos-group You're Reading a Preview vlan




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Quality of

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Table 26

Available Policy-map Actions in Cisco IOS and Cisco IOS XR

Cisco IOS

Cisco IOS XR

bandwidth

bandwidth

police

police

priority

priority

queue-limit

queue-limit

random-detect

random-detect

service-policy

service-policy

set

set dscp

cos

ip

discard-class

mpls

dscp

precedence

mpls

atm-clp

precedence

cos

qos-group

discard-class

srp-priority

fr-de

You're Reading a Preview shape

qos-group


shape


You have a few more class-map options in Cisco IOS than Cisco IOS XR software, but the options of dscp, mpls, qos-group, and discard-class are present. Cisco IOS XR software for atm-clp or fr-de, but that is because there is no support for ATM or FR encapsulation Cisco IOS XR software. 


The actions you can take in a policy map are almost identical as well.



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One issue to note in MQC is that in Cisco IOS so me measures of bandwidth are in bits per are in bytes per second, and some are in kilobits per second. The three keywords in a pol refer to bandwidth on a Cisco XR 12000 Series Router in 12.0(28)S are:

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IPv6

Other parts of QoS that exist in Cisco IOS are Selective Packet Discard (SPD) and receive A Cisco IOS XR software also has Local Packet Transport Service (LPTS) to provide protectio Denial of Service (DoS) attacks. In the current release, you can monitor but not configure LPT document does not describe LPTS.

For further information on QoS configuration, see the following configuration guide and com reference: •


•

Cisco IOS XR Modular Quality of Service Command Reference

IPv6 IPv6 configuration is very similar to IPv4. Table 27

IPv6 IS-IS Configuration in Cisco IOS and Cisco IOS XR Software

Cisco IOS


interface POS2/1


ipv6 address FEC0:0:0:14::5/104

ipv6 address fec0:0:0:14::8/104

ipv6 router isis labv6 router isis labv6 is-type level-2-only

router isis labv6

net You're Reading a Preview

net 49.0192.0168.0001.0005.00 is-type level-2-only metric-style wide

49.0192.0168.0001.000.8.00

interface Loopback0 passive

Unlock full access with a free trial.address-family

redistribute connected

passive-interface Loopback0 ! address-family ipv6

!

Download With Free Trial interface

multi-topology exit-address-family !

ipv6 unicast

! POS0/2/0/1

address-family ipv6 unicast ! !



up to vote onrouting this title One thing to note is that Cisco IOS XR software usesSign multi-topology rather than a si topology with all prefixes as leaf nodes, so you need to Useful enable multi-topology  Not usefulunder the addr in Cisco IOS.

In general, IPv6 show commands are the same as IPv4 show commands; many of the show i

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Table 28

IPv4 OSPFv2 and IPv6 OSPFv3 Configurations in Cisco IOS XR Softwa

Cisco IOS XR OSPFv2 (IPv4)

Cisco IOS XR OSPFv3 (IPv6)

router ospf lab log adjacency changes

router ospfv3 labv6 log adjacency changes

area 0

area 0

interface Loopback0 passive enable

interface Loopback0 passive

!

!







cost 17

cost 17



!

!

!

!

!

!

There is no implementation of MPLS-TE for IPv6 in IS-IS or OSPF, so any traffic-engine commands under the IGP will not be accepted. IPv6 in both Cisco IOS and Cisco IOS XR software has capabilities that are not covered You're Reading a Preview document

For further information Unlock on IPv6 seetrial. the following configuration guide and fullconfiguration, access with a free reference: •

Cisco IOS XR IP Addresses andWith Services Guide Download FreeConfiguration Trial

•

Cisco IOS XR IP Addresses and Services Command Reference

Other Cisco IOS XR Issues


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This section addresses the following miscellaneous issues: •

Access Lists, page 27

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Note that Cisco IOS XR software does not have a concept of named or numbered ACLs, and that there is no such thing as a standard or extended ACL; for the equivalent of the standard ACL, configure a Cisco IOS XR ACL with only the source IP address specified. Cisco IOS XR software supports a full set of keyword equivalents for Cisco IOS. Table 29

Comparison of Access-lists between Cisco IOS and Cisco IOS XR Configurations

Cisco IOS


access-list 10 permit 1.1.1.1 access-list 10 permit 10.0.0.0 0.255.255.255

ipv4 access-list ten 10 permit ipv4 host 1.1.1.1 any 20 permit ipv4 10.0.0.0 0.255.255.255 any

access-list 100 permit ip 20.0.0.0 0.0.255.0 any

ipv4 access-list 100

access-list 100 permit icmp any host 1.2.3.4

10 permit ipv4 20.0.0.0 0.0.255.0 any 20 permit icmp any host 1.2.3.4

ip access-list standard test

ipv4 access-list test

permit 9.9.9.9

10 permit ipv4 host 9.9.9.9 any

ip access-list extended moreTest permit eigrp 1.0.2.0 0.255.0.255 host 7.7.7.6

ipv4 access-list moreTest 10 permit eigrp 1.0.2.0 0.255.0.255 host 7.7

Cisco IOS XR software also allows you to resequence an ACL, so that if you have left yourse to add new lines, you can create that space. The first example shows the results of using the access-lists command: RP/0/RP/CPU0:router# show ipv4 access-lists test


ipv4 access-list test 10 permit ipv4 11.0.0.0 0.0.0.255 any

Unlock full access with 11 permit ipv4 12.0.0.0 0.0.0.255 any

a free trial.

Download With Free Trial Username Configuration and Permission Levels

This section briefly describes a very powerful and therefore complex set of Cisco IOS XR so for allowing multiple levels of permissions to a CLI user. Cisco IOS has privilege levels; an level 15 unauthenticated user is privilege level 1, a user with the enup able is title privilege Sign to password vote on this networks use the levels in between for partial access.

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Cisco IOS XR software has the concepts of task groups and user groups that allow you much flexibility in a more logical manner; you define a group of users that has access to a certain s

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•

operator—day-to-day monitoring activities and limited configuration rights

•

root-system—configuration and display rights for all SDRs in the system

•

root-lr—configuration and display rights for a specific SDR

•

sysadmin—administrative tasks such as maintaining the location for s tored core dump the Network Timing Protocol (NTP)

In addition, you can define your own task groups (with sets of capabilities that a task grou and usergroup (collections of task groups) and attach them to a username. D oing this is bey of this document, although investigation of task groups and the Cisco IOS XR authentica highly recommended. For information on task groups, user groups, and so on, see Cisco I Security Configuration Guide and Cisco IOS XR Getting Started Guid e.

Beginning in Release 3.3.0, we support Secure Domain Routers (SDRs). Each SDR has i usernames and access privileges. The root-system username can be used only on the DSC of rack 0) to access the Admin EXEC and Admin configuration modes. The other username to a specific SDR. If the system has only the default SDR, then every user logs in to the s

Network Time Protocol (NTP) The NTP configuration in Cisco IOS XR software is similar to that in Cisco IOS: Table 30

Cisco IOS

NTP Configuration in Cisco IOS and Cisco IOS XR Software



ntp server 10.86.202.56Unlock full access with a free trial. ntp server 161.44.71.59 ! Download With Free Trial

Hot Standby Router Protocol (HSRP) and Virtual Router Redundancy Pr  (VRRP) Sign up to vote on this title

useful  Useful HSRP and VRRP configurations are similar in Cisco IOS and in Not Cisco IOS XR software. Table 31

HSRP and VRRP Configurations in Cisco IOS and Cisco IOS XR Softw

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Line Configurations

The line {console | aux | vty} configurations are very similar in Cisco IOS and Cisco IOS In most networks, the console and vtys are configured; the aux port is not very useful in either or Cisco IOS-XR software. A simple translation of Cisco IOS to Cisco IOS XR software app Table 32. Table 32

Line Configurations in Cisco IOS and Cisco IOS XR Software

Cisco IOS


aaa authentication login default local

username lab

username lab password 7 09404F0B

password 7 1042081B

line con 0

group root-system

exec-timeout 0 0 line vty 0 4

! line console

password lab

exec-timeout 0 0

login

! telnet ipv4 server enable

!

Note that in Cisco IOS XR software you must configure the global command telnet ipv4 ser for the router to allow telnet.

Secure Shell (SSH) sup port is very similar. The crypto key zerioze and crypto key generate are in EXEC mode in Cisco IOS XR software, but in Cisco IOS they are in configuration mo Table 33


Secure Shell (with no telnet) Configurations in Cisco IOS and Cisco IOS XR

Cisco IOS



aaa authentication login default local

username lab

Download With Free Trial password

username lab password 7 09404F0B line vty 0 4 transport input ssh !

7 1042081B group root-system

! line console exec-timeout 0 0 !




ssh server enable

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For SSH support, you need to have crypto support, just as in Cisco IOS. This is generally by installing the k9sec package.

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Translating Cisco IOS Route Maps to Cisco IOS XR Routing Pol

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This is a little confusing, as the notion of a trans port being allowed in Cisco IOS means th that transport to connect to the router; in Cisco IOS XR software, you need to enable both the transport, and the transport is enabled by default. To be certain of control access into enable and disable the server.

Translating Cisco IOS Route Maps to Cisco IOS XR Routi Policy Language This section contains the following topics: •

Introduction and Overview, page 31

•

Original Route Map Configuration, page 32

•

A Simple Translation, page 33

•

Using Nested Conditionals to Reduce Repetitive Comparisons, page 34

•

Using Inline Sets to Remove Small Indirect Set References, page 36

•

Taking Advantage of Parameterization to Reuse Common Structures, page 37

Introduction and Overview You're Reading a Preview

Consider the following route maps, prefix lists, and community lists. We show four differe into the routing policy language, more capabilities of the language to re Unlock fullcontinually access with ausing free trial. amount of configuration needed. This example steps you through using several of the fea language to modularize the configuration. Decide what you should modularize and wheth Download With Free Trial modularize specific portions in the context of how that particular piece of policy will be u

You cannot use both RPL and an old policy (including route maps and access control list attach point. For example, the following configuration would be invalid: router bgp 2 neighbor 10.0.101.2 address-family ipv4 unicast route-policy rpl0 in route-map rm0 in


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Translating Cisco IOS Route Maps to Cisco IOS XR Routing Policy Language

Original Route Map Configuration The following is an example of an original route map. ip prefix-list 101 10 permit 10.48.0.0/16 le 32 20 permit 172.48.0.0/19 le 32 30 permit 172.10.10.0/24 40 permit 172.11.1.0/24 50 permit 192.168.3.0/24 60 permit 192.168.8.0/21 70 permit 192.168.32.0/21 ip prefix-list 102 10 permit 10.48.0.0/16 le 32 20 permit 10.48.0.5/19 le 32 30 permit 172.16.10.0/24 40 permit 172.16.1.0/24 50 permit 172.16.3.0/24 60 permit 192.168.8.0/21 70 permit 192.168.32.0/21

ip community-list 1 10 permit 10:11 ip community-list 2 10 permit 10:12


ip community-list 3 10 permit 10:13 ip community-list 4 10 permit 10:14



route-map sample1-translation-1 permit 10 match ip address prefix-list 101 match community 1 set community 12:34 additive set metric 11 route-map sample1-translation-1 permit 20 match ip address prefix-list 101 match community 2 set metric 12


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set community 12:35 additive set metric 11 route-map sample2-translation-1 permit 20 match ip address prefix-list 102 match community 2 set metric 12 set community 12:35 additive route-map sample2-translation-1 permit 30 match ip address prefix-list 102 match community 3 set metric 13 set community 12:35 additive route-map sample2-translation-1 permit 40 match ip address prefix-list 102 match community 4 set metric 14 set community 12:35 additive route-map sample2-translation-1 permit 50 match ip address prefix-list 102 set metric 100 set community 12:35 additive

A Simple Translation

A simple translation of this route map configuration to the policy language would retain t operations, as shown in You're the following example: Reading a Preview prefix-set ps101 Unlock 10.48.0.0/16 le 32

full access with a free trial.

172.48.0.0/19 le 32 172.10.10.0/24 172.11.1.0/24 192.168.3.0/24


192.168.8.0/21 192.168.32.0/21 end-set prefix-set ps102 10.48.0.0/16 le 32 10.48.0.5/19 le 32 172.16.10.0/24 172.16.1.0/24


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end-set route-policy sample1-translation-1a if destination in ps101 and community matches-any cs1 then set med 11 set community 12:34 additive elseif destination in ps101 and community matches-any cs2 then set med 12 set community 12:34 additive elseif destination in ps101 and community matches-any cs3 then set med 13 set community 12:34 additive elseif destination in ps101 and community matches-any cs4 then set med 14 set community 12:34 additive elseif destination in ps101 set med 100 set community 12:34 additive endif end-policy route-policy sample2-translation-1a if destination in ps102 and community matches-any cs1 then set med 11 set community (12:35) additive elseif destination in ps102 and community matches-any cs2 then set med 12 set community (12:35) additive elseif destination in ps102 and community matches-any cs3 then set med 13


set community (12:35) additive Unlock full access with a free trial. elseif destination in ps102 and community matches-any cs4 then set med 14 set community (12:35) additive


elseif destination in ps102 set med 100

set community (12:35) additive endif end-policy




Useful  Not useful  Comparisons Using Nested Conditionals to Reduce Repetitive

Common operations can be coalesced by nesting the conditionals, testing the destination add

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192.168.32.0/21 end-set community-set cs1 10:11 end-set community-set cs2 10:12 end-set community-set cs3 10:13 end-set community-set cs4 10:14 end-set route-policy sample1-translation-1b if destination in ps101 then set community (12:34) additive if community matches-any cs1 then set med 11 elseif community matches-any cs2 then set med 12 elseif community matches-any cs3 then set med 13 elseif community matches-any cs4 then


set med 14

else Unlock set med 100

full access with a free trial.

endif endif end-policy


route-policy sample2-translation-1b if destination in ps102 then set community (12:35) additive if community matches-any cs1 then


set med 11 elseif community matches-any cs2 then



set med 12 elseif community matches-any cs3 then set med 13

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Using Inline Sets to Remove Small Indirect Set References

Because the community comparisons are simple, we can replace the named community set re with direct inline references, thus eliminating the need to define four community sets, each o contains only one community value. These replacements leave two prefix sets and two polici follows: prefix-set ps101 10.48.0.0/16 le 32 172.48.0.0/19 le 32 172.10.10.0/24 172.11.1.0/24 192.168.3.0/24 192.168.8.0/21 192.168.32.0/21 end-set prefix-set ps102 10.48.0.0/16 le 32 10.48.0.5/19 le 32 172.16.10.0/24 172.16.1.0/24 172.16.3.0/24 192.168.8.0/21 192.168.32.0/21 end-set


route-policy sample1-translation-1c

if destination in ps101 then set community (12:34) additive


if community matches-any (10:11) then

set med 11 elseif community matches-any (10:12) then set med 12


elseif community matches-any (10:13) then set med 13 elseif community matches-any (10:14) then set med 14 else set med 100 endif end-policy route-policy sample2-translation-1c


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Taking Advantage of Parameterization to Reuse Common Structures

The following example takes advantage of the ability to parameterize common structures common parameterized policy (sample-translation-common) that is reused: prefix-set ps101 10.48.0.0/16 le 32 172.48.0.0/19 le 32 172.10.10.0/24 172.11.1.0/24 192.168.3.0/24 192.168.8.0/21 192.168.32.0/21 end-set prefix-set ps102 10.48.0.0/16 le 32 10.48.0.5/19 le 32 172.16.10.0/24 172.16.1.0/24 172.16.3.0/24 192.168.8.0/21 192.168.32.0/21 end-set route-policy sample-translation-common($ tag ) set community (12:$tag) additive if community matches-any (10:11) then set med 11


elseif community matches-any (10:12) then Unlock full access with a free trial. set med 12 elseif community matches-any (10:13) then set med 13


elseif community matches-any (10:14) then set med 14 else set med 100 endif end-policy route-policy sample1-translation-1d if destination in ps101 then


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apply sample-translation-common ($34) pass

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I N

HC

Cisco IOS XR Interface and Hardware Component Configuration Guide

B

IC

Cisco IOS XR IP Addresses and Services Configurati on Guide

bandwidth command (IOS XR)

MCC

Cisco IOS XR Multicast Configuration Guide

banner command (IOS)

MPC

Cisco IOS XR MPLS Configuration Guide

banner command (IOS XR)

QC


RC

Cisco IOS XR Routing Configuration Guide

SBC

Cisco IOS XR Session Border Controller Configuration Guide

SC

Cisco IOS XR System Security Configuration Guide

SMC

Cisco IOS XR System Management Configuration Guide

23

5 5

bgp log-neighbor-changes command (IOS) 18 boot system command (IOS)

4

C

A Cisco IOS commands aaa accounting commands command (IOS)

6

aaa accounting commands

You're Reading a Preview aaa accounting commands command (IOS XR) 6

aaa accounting exec

aaa accounting exec command (IOS)

aaa accounting exec command (IOS XR) aaa authentication command (IOS)

Unlock full access with a free aaatrial. authentication

6 6

3, 30

aaa authorization commands command(IOS)

access-list command

access-list 6

3

3

address-family ipv6

26


announce Useful 23

4

area

27

banner

5

6

28

access-list command



compiled keyword (IOS) number variable (IOS)

3

3, 30

Download With Freeaaa Trial new-model 3

aaa authorization commands command(IOS XR) aaa new-model command (IOS)

6

aaa authorization commands

6

6

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Index

ip address

net 10, 26

7, 12

ip bgp-community new-format ip bootp server ip classless ip finger ip ftp

4

network 12 no auto-summary 13, 14, 16, 17, 18

4

no mpls ip propagate-ttl

4

no service pad

4

5

no synchronization 13, 14, 15, 16, 17, 18

6

ip-multicast-routing

ntp

21

29

ip name-server

6

passive

ip pim address

21

passive interface

ip receive ip route

password

6

7

redistribute connected 11, 26

ip subnet-zero

redistribute connected route-map

4

ip tcp path-mtu discovery ip telnet source-interface

6 6

router bgp 13, 14, 15, 16, 17, 18


ipv6 address

Unlock full access withrouter a free trial. isis

23

10

remote-as 14, 17, 18

router-id

6

ip unnumbered

isis

7

pos scramble-atm

23

4

ipv6 router

12

15

pos ais-shut

10

ip rsvp bandwidth

ip tftp

27

passive-interface 10, 26

4

ip router

ip spd

21

9 10

router ospf 12, 27

26

Download With Free Trial service compress-config

26

service nagle

10

5

5

is-type 10, 26

service password-encryption

line

service tcp-keepalives-in

7, 30

5

5




log adjacency changes

27

service tcp-keepalives-out

log-adjacency-changes

12

service timestamps debug datetime msec

logging buffered

7

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service timestamps log datetime msec

5

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Cisco IOS XR commands

aaa accounting exec

6

6

aaa authorization commands address-family 10, 14 address-family ipv6

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6

net

26

ntp

29

16

passive 10, 12, 26, 27 15

path-option

23

af-group 14, 15, 16, 18

path scramblilng disable

ais-shut

peer-group

7

autoroute announce bandwidth banner

23

23

controller SONET cost

egbp-multihop

hsrp

6

11 10

route ipv4

6 18

router bgp 13, 14, 15, 16, 17, 18

30

router-id

6


9

router isis 10, 26

30

Unlock full access with a free trial.ospf 12 router

5

router ospfv3

29

interface

17

route-policy

17

exec-timeout

hostname

policy

remote-as 14, 17, 18

domain name-server

group

28

redistribute connected policy

7

27

ftp client

permit

7

18

redistribute connected

5

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password 26

Router

neighbor-group

10

aaa accounting commands

of 54


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7, 10

interface tunnel-te ipv4 access-list ipv4 address

ipv6 address is-type 10, 26

23

26

service timestamps debug datetime msec service timestamps log datetime msec

28

session-group

7

ipv4 unnumbered

27

23

15


show line

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30

snmp-server

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soft-reconfiguration 14, 16, 18

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Index

vrrp

interface command (IOS)

29

weight 14, 16, 18

7

interface command (IOS XR)

controller SONET command (IOS XR) conversion procedure

2

cost command (IOS)

27

7, 10

interface tunnel command (IOS)

7

23

interface tunnel-te command (IOS XR) ip access-list command (IOS)

cost command (IOS XR)

ip address command (IOS)

27

23

28

7, 12

ip bgp-community new-format command (IOS) ip bootp server command (IOS)

D

ip classless command (IOS)

domain name-server command (IOS XR)

6

ip finger command (IOS) ip ftp command (IOS)

3, 4 4

6

ip multicast-routing command (IOS)

E egbp-multihop command (IOS)

17

egbp-multihop command (IOS XR) egbp-peers command (IOS) enable command (IOS)

4

17

6

ip pim address command (IOS)

21

ip receive command (IOS) ip route command (IOS)

18

exit-address-family command (IOS)

10


ip rsvp bandwidth command (IOS)

30

exec-timeout command (IOS XR)

4 6

ip router command (IOS)

4

exec-timeout command (IOS)

ip name-server command (IOS)

Unlock full access with a free trial. ip spd command (IOS)

30 26

21

23

4

ip subnet-zero command (IOS)

4

Download WithipFree Trial tcp path-mtu-discovery command (IOS) ip telnet source-interface command (IOS)

F ftp client command (IOS XR)

ip tftp command (IOS) 6

6

ip unnumbered command (IOS)


23 

ipv4 access-list command (IOS XR)

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ipv4 address command (IOS XR)

G

28

7

ipv4 unnumbered command (IOS XR)

23

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log-adjacency-changes command (IOS)

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5

no synchronization command (IOS) 13,

12

ntp command (IOS)

7

logging buffered command (IOS XR)

Router

no service pad command (IOS)

12

log adjacency changes command (IOS XR) logging buffered command (IOS)


29

ntp command (IOS XR)

7

29

loopback command (IOS) 13, 17

O M

outer ospf command (IOS)

12

maximum-prefix command (IOS) 14, 16, 18 maximum-prefix command (IOS XR) 14, 16, 18 metric command (IOS XR) metric-style command (IOS)

P

10 26

passive command (IOS)

mpls ip-ttl-propagate disable command (IOS XR) mpls label protocol command (IOS)

22

mpls ldp command (IOS XR)

4

password command (IOS) 21

15

password command (IOS XR)

15


22

path-option command (IOS XR)

mpls traffic-eng area command (IOS)

peer-group command (IOS XR)

mpls traffic-eng auto-bw command (IOS)

permit command (IOS XR)

mpls traffic-eng command (IOS XR)

mpls traffic-eng tunnels command (IOS) multicast-routing command (IOS XR) 26

4


23

mpls traffic-eng router-id command (IOS)

23

18

28

pos ais-shut command (IOS) 23

21

23

Unlock full access with apath free scrambling trial. disable command (IOS XR

23

mpls traffic-eng area command (IOS XR) 12, 23

multi-topology command (IOS)

12

passive-interface command (IOS) 10, 26

21

mpls label range command (IOS XR)

passive command (IOS XR) 10, 12, 26, 27 passive interface command (IOS)

mpls label protocol ldp command (IOS) mpls label range command (IOS)

21

27

7

pos scramble-atm command (IOS)

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redistribute connected command (IOS) 11,

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Converting Cisco IOS Configurations to Cisco IOS XR Configurations

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