CMTS Debug_DiagRef_7_27_11_Release_6.0.3

Casa Sys Systt ems CMTS

Debuggi bug ging ng and Dia Diagn gnost ostic ics s Reference For Releases Releases 5.2 5.2 to 6.0. 6.0.3 3

DOC-3006-01 Document Version 6.0.3 July 2011

© 201 2011 Casa Casa System Sys tems, s, Inc . All rights rights reserved. reserved. Licensed software products are owned owned by Casa Casa Systems or its its suppliers suppliers and and are protected by United States States copyright laws and international treaty provisions. The information regarding the product in this manual is subject to change without notice. All statements, information, and recommendations recommendations in this manual are believed to be accurate but are presented without warranty of any kind, express of implied. Users must take full responsibility for their application of the product. In no event shall Casa or its suppliers be liable for any indirect, special, consequential, or incidental damages, including, including, without limitation, lost profits or loss or damage to data arising out of the use or inability to use this manual, even if Casa or its suppliers have been advised of the possibility of such damages .

© 201 2011 Casa Casa System Sys tems, s, Inc . All rights rights reserved. reserved. Licensed software products are owned owned by Casa Casa Systems or its its suppliers suppliers and and are protected by United States States copyright laws and international treaty provisions. The information regarding the product in this manual is subject to change without notice. All statements, information, and recommendations recommendations in this manual are believed to be accurate but are presented without warranty of any kind, express of implied. Users must take full responsibility for their application of the product. In no event shall Casa or its suppliers be liable for any indirect, special, consequential, or incidental damages, including, including, without limitation, lost profits or loss or damage to data arising out of the use or inability to use this manual, even if Casa or its suppliers have been advised of the possibility of such damages .

iii

Contents

Preface About this guide ............ ......................... ......................... ........................ ......................... ......................... ......................... ......................... ............ vii Revision history................. history............................. ......................... ......................... ........................ ........................ ......................... ................viii ...viii Contacting Casa ............. ......................... ........................ ......................... ......................... ......................... .......................... .......................viii ..........viii Corporate facility ............ ......................... ......................... ......................... ......................... ........................ ........................ ..................viii ......viii Technical Support ........... ....................... ......................... ......................... ........................ ........................ ........................ ..................viii ......viii Technical documentation ............ ........................ ........................ ......................... ........................ ........................ ...................viii ......viii Conventions used in Casa documentation ............ ........................ ......................... .......................... ...................... ......... ix Typographical conventions ............ ......................... ......................... ......................... .......................... .......................... ............... ix Acronyms ............. .......................... .......................... .......................... ......................... ......................... ......................... ......................... ................ ... x

Chapter 1. Casa Casa CMT CMTS S debugging debugg ing com commands mands Activating logging ............. ......................... ......................... .......................... .......................... .......................... ........................ ................. ...... 1-2 Additional logging .................................. ............................................... .......................... ........................ ........................ ................. .... 1-3 Displaying debug log settings ........... ........................ .......................... .......................... .......................... ................... ...... 1-3 Debug AAA AA A ........... ....................... ......................... .......................... .......................... .......................... ......................... ......................... ................ ... 1-4 Debug ARP ........... ....................... ......................... .......................... .......................... .......................... ......................... ......................... ................ ... 1-4 Debug cable plant ............ ........................ ......................... ......................... ......................... .......................... ......................... .................. ...... 1-5 Signal quality ............. ......................... ......................... .......................... .......................... .......................... ......................... .................. ...... 1-5 Table Tab le 1-1 1-1.. Signal Sig nal qua quality lity mod modula ulatio tion n ... ..... ..... ...... ...... ..... ..... ...... ...... ...... ...... ...... ...... ...... ...... ...... ..... ..... ..... .. 1-5 Displaying the noise level ........... ........................ .......................... .......................... .......................... .....................1-6 ........1-6 Debug cable modem ............ ......................... ......................... ......................... ......................... ......................... .......................... ............... 1-7 Cable modem flapping flappin g ............. .......................... ......................... ........................ ......................... .......................... ....................... .......... 1-9 Cable modem configuration configuration information ............ ......................... .......................... .......................... ................... ...... 1-10 Cable modem status ............ ......................... .......................... .......................... ......................... ......................... ........................ ........... 1-12 Cable modem remote query ............ ......................... ......................... ........................ ......................... ......................... .............. 1-13

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Casa Syst ems CMTS Release 6.0.3 6.0.3

iv

Debugging and Diagnostics Reference Contents

Debug PacketCable ........................................................................................ 1-14 Debug IP ......................................................................................................... 1-14 Debug BGP ..................................................................................................... 1-15 Debug IS-IS .................................................................................................... 1-16 Debug OSPF ................................................................................................... 1-17 OSPF packet information .......................................................................... 1-20 Debug RIP ...................................................................................................... 1-21 Debug LACP ................................................................................................... 1-21 Connection testing .......................................................................................... 1-22

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Chapter 2. Casa CMTS diagnostics commands SMM diagnostics ............................................................................................... 2-2 QAM diagnostics ............................................................................................... 2-4 Downstream and upstream interface statistics ................................................. 2-5 Checking for downstream errors ....................................................................... 2-8 Upstream diagnostics (Release 5.4 only) ......................................................... 2-9 Past DHCP transactions ................................................................................... 2-9 System kernel messages ................................................................................ 2-10 Capturing packets on the GigE interfaces .......................................................2-11 Tracing the IP path .......................................................................................... 2-13 Capturing cable modem traffic on the SMM .................................................... 2-16 Displaying cable modems by modem ID ......................................................... 2-18 Core dumps .................................................................................................... 2-19 Removing old core dump files ................................................................... 2-19 Testing connectivity (extended Ping) .............................................................. 2-20 Other diagnostic commands ........................................................................... 2-20 ARP table entry ......................................................................................... 2-21 Auto-reboot ............................................................................................... 2-21 Set the CPU receive rate .......................................................................... 2-22 Turning power on and off to individual CMTS module .............................. 2-22 Shutdown or restart SNMP ....................................................................... 2-23 Show ACL applications ............................................................................. 2-23 Casa Systems CMTS Release 6.0.3

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Debugging and Diagnostics Reference

v

Contents

Reboot a module unconditionally ..............................................................2-24 Show kernel interface information .............................................................2-25 Display modem information by QAM .........................................................2-26 Display VLAN information ..........................................................................2-28 Display information about modems on a VLAN .........................................2-29

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Casa Syst ems CMTS Release 6.0.3

vii

Preface

About this guide The Casa Systems – CMTS Debugging and Diagnostics Reference describes the debugging and diagnostic commands that are available for diagnosing possible problems with the CMTS or equipment that is connected to the CMTS. The debugging and diagnostic commands are supported in the Casa command line interface (CLI) and are included to help diagnose system problems. This guide is intended for system administrators, support engineers, and operators who are responsible for configuring and managing Casa CMTS products. Users who perform these tasks should be familiar with the Casa CMTS hardware and cabling, as well as have experience with the following: •

IP routing protocols

•

MPEG-2 protocol

•

DOCSIS protocol

•

RF cable plants

The following topics are covered in this guide: For information about

See

Debugging commands

Chapter 1.

Diagnostic commands

Chapter 2.


viii

Debugging and Diagnostics Reference Contacting Casa

Revision history This guide supports Casa CMTS software releases up to version 5.4.21. See the Casa Systems – CMTS Release Notes for additional information.

Contacting Casa Corporate facility Casa Systems, Inc. 100 Old River Road Andover, MA 01810 Tel.: 978-688-6706 World Wide Web: www.casa-systems.com

Technic al Support In the United States: Tel: 978-699-3045 E-mail: [email protected]

Technical documentation Casa Systems provides the following documentation set in PDF format, viewable using Adobe Reader 5.0 or later. These PDF files are available from the Casa FTP site at ftp://support.casa-systems.com. •

Casa Systems – C2200 CMTS Quick Installation

•

Casa Systems – C2200 CMTS Hardware Installaton Guide

•

Casa Systems – C3200 CMTS Quick Installation

•

Casa Systems – C3200 CMTS Hardware Installation Guide

•

Casa Systems – C10200 CMTS Hardware Installation Guide

•

Casa Systems – C10G CMTS Hardware Installation Guide

•

Casa Systems – C10G/C10200 CMTS Quick Installation

•

Casa Systems – CMTS Software Configuration Guide

•

Casa Systems – CMTS Debugging and Diagnostics Reference

Casa Systems CMTS Release 6.0.3

Preface

ix

Conventions used in Casa documentation

•

Casa Systems – CMTS Release Notes

Note: Casa Systems provides updates to the manuals on a regular basis. Log on to Casa FTP site for the latest files in PDF format.

Conventions used in Casa documentation Typogr aphical convention s Key Convention Boldface font

Function

Example

Commands and keywords in text are in The show running-config boldface .

command...

Bold italic font

Arguments mentioned in are in bold italic font.

Where: : the area identifier.

brackets [ ]

Elements in square brackets are optional.

CASA- CMTS# show rstp port

Indicates a required argument with a choice of values; choose one.

CASA- CMTS( conf i g- r out er - o spf ) # area shortcut

braces {x | y | z}

[]

{enable | disable | default}

brackets [x | y | z]

Indicates an optional argument with a choice of values; choose one.

CASA- CMTS( conf i g- r out er - o spf ) # area nssa [translate-always | translatecandidate | translate-never]

vertical bar |

Separates parameter values. Same as CASA- CMTS( conf i g- r out er - o “or.” spf ) # ospf abr-type [cisco | ibm | shortcut | standard ]

string

A non-quoted set of characters. Do not CASA- CMTS# hostname use quotation marks (“”)around the string as the string will include the quotation marks.


x

Debugging and Diagnostics Reference Conventions used in Casa documentation

Key Convention

Function

Example

Scr een font

Terminal sessions and information the system displays are in scr een font.

[ Wed Sep 1 20: 58: 07 2010] - AL- SYS- 1: Modul e 8 ( QAM) , i s up.

Bold screen font Bold italic screen

font

Information you must enter is in boldface screen font.

CMTS# show docsis channel utilization

Arguments for which you supply values CASA- CMTS( conf i g- r out er- o are in bold italic screen font. spf ) # timers spf

<>

Non-printing characters such as CASA- CMTS( conf i g) # system passwords are in angle brackets in monitor memory contexts where italics are not available. threshold Angle brackets are also used for variables.

!,#

An exclamation point (!) or a pound sign (#) at the beginning of a line of code indicates a comment line.

# This is a comment.

Acronyms Casa Systems manuals contain the following industry-standard and product-specific acronyms: AAA

Authentication, Authorization, Accounting

ACL

Access Control List

ARP

Address Resolution Protocol

ATDMA

Asynchronous Time Division Multiple Access

BGP

Border Gateway Protocol

BPI

Baseline Privacy Interface

CM

Cable Modem

CMTS

Cable Modem Termination System

DBC

Dynamic Bonding Change

DCC

Dynamic Channel Change

DDM

DOCSIS Data Manager

DOCSIS

Data Over Cable Service Interface Specification

DHCP

Dynamic Host Configuration Protocol


Preface

xi

Conventions used in Casa documentation

DSG

DOCSIS Set-top Gateway

GigE

Gigabit Ethernet

HFC

Hybrid fiber coaxial

ICMP

Internet Control Message Protocol

IP

Internet Protocol

IS-IS

Intermediate System-to-Intermediate System

LACP

Link Aggregration Control Protocol

MIB

Management Information Base

NTP

Network Time Protocol

OSPF

Open Shortest Path First Protocol

PCMM

Packet Cable Multimedia

PIM

Protocol Independant Multicast

QAM

Quadrature Amplitude Modulation

RIP

Routing Information Protocol

SCDMA

Synchronous Code Division Multiple Access

SMM

Switch and Management Module (Casa Systems)

SNR

Signal to Noise Ratio

STB

Set-top Box

TACACS

Terminal Access Controller Access Control System

TCP

Transmission Control Protocol

TDMA

Time Division Multiple Access

TOS

Type of Service

UCC

Upstream Channel Change

VoIP

Voice over IP

VLAN

Virtual Local Area Network


1-1

Chapter 1. Casa CMTS debugging commands

This chapter describes the Casa CMTS debugging commands available from the CLI for debugging purposes. The CMTS supports commands for debugging the following categories: •

AAA — Accounting, Authorization, and Authentication

•

ARP — Address Resolution Protocol

•

Cable — cable plant

•

IP — Internet Protocol

•

LACP — Link Aggregation Control Protocol

You can also debug connectivity issues with the extended ping command. This chapter covers the following topics: Topic

Page

Activating logging

1-2

Additional logging

1-3

Displaying debug log settings

1-3

Debug AAA

1-4

Debug ARP

1-4

Debug cable plant

1-5

Debug cable modem

1-7

Cable modem flapping

1-9

Cable modem configuration information

1-10


1-2

Debugging and Diagnostics Reference Ac ti vat in g l og gi ng

Topic

Page

Cable modem configuration information

1-10

Cable modem status

1-12

Cable modem remote query

1-13

Debug PacketCable

1-14

Debug IP

1-14

Debug BGP

1-15

Debug IS-IS

1-16

Debug OSPF

1-17

Debug RIP

1-21

Debug LACP

1-21

Connection testing

1-22

Activating logging Debug output is captured in the CMTS log. It is necessary to first enable logging functionality before enabling the debug options. To enable or disable debugging output: Step

Command

Purpose

1.

[no] logging debugging

Enables or disables debug logging.

Example:

Enable logging of debugging messages. CASA- CMTS( conf i g) # logging debugging

Disable logging of debugging messages. CASA- CMTS( conf i g) # no logging debugging

For additional information on logging commands, refer to the Casa Systems – CMTS Software Configuration Guide . Casa Systems CMTS Release 6.0.3

Casa CMTS debugging commands

1-3

Ac ti vat in g l og gi ng

Additional logging Additional logging information can be collected for analysis by Casa Technical Support using the following commands: Step

Command

Purpose

1.

show tech

Get module-specific information for use by Casa Technical Support.

or show tech module Where: is the number of the unique module identifier,

usually the slot number of the module location in the chassis. Example:

CASA- CMTS# show tech

Displaying debug log settings To display debug logging settings before or during the log printing process, enter the show debugging command. Step

Command

Purpose

1.

show debugging [ bgp | isis | ospf | rip | ripng]

Displays the current debug log settings.

Example:

CASA- C10000#logging debugging CASA- C10000#debug cable mac-address 0050.f112.b764

CASA- C10000#debug cable cfg CASA- C10000#debug cable verbose CASA- C10000#show debugging Cabl e: mac- addr ess: 0050. f 112. b764 mask : ff ff . ff ff . ff ff conf i g ver bose


1-4

Debugging and Diagnostics Reference Debug AAA

Debug AAA To debug problems with AAA: Step

Command

Purpose

1.

[no] debug aaa [(accounti ng) | (authentication) | (authorization)]

Enable or disable AAA debugging.

Example:

CASA- CMTS# debug aaa CASA- CMTS# debug aaa authentication

Use the no form of the command to disable AAA or a AAA option.

When enabled, the logging session will show the AAA-related transaction.

Debug ARP To debug problems with the Address Resolution Protocol (ARP): Step

Command

Purpose

1.

[no] debug arp

Enable or disable ARP debugging, or debug ARP on a specific cable modem.

Example:

CASA- CMTS# debug arp

To debug ARP problems with specific cable modems, specify the MAC address: [no] d ebug arp mac-address

CASA- CMTS# debug arp mac-address 0050.f112.b765



1-5

Debug c able plant

Debug cable plant To obtain information on the cable plant, use one of the following debugging commands: •

signal quality

•

debug cable

•

show cable flap list

•

show cable modem information

•

show cable modem remote query

Signal qu ality To check the signal quality on the plant as detected by the CMTS, use the commands that display the signal quality and spectrum characteristics. For signal noise: Step

Command

Purpose

1.

show upstream [] signal-quality

Displays signal quality. To display all the upstream channels at once, leave out the upstream port number.

Example:

CASA- CMTS# show upst r eam 1/ 4. 1 si gnal - qual i t y Where: X/Y.C is the slot/port.channel specification.

Check the following values in Table 1-1against the modulation profile to be sure the noise level can support the modulation that is running. Use the show spectrum snr-threshold-default command to display these values.

Table 1-1.

Signal quality modulation

Module

Conservative

Addressive

QPSK

130

100

8QAM

190

160


1-6

Debugging and Diagnostics Reference Debug cable plant

Table 1-1.

Signal quality modulation (continued)

Module

Conservative

Addressive

16QAM

220

190

32QAM

250

220

64QAM

280

250

128QAM

310

290

If the signal is too low, find the source of the noise or adjust attenuation first, then adjust power levels.

Displaying the noise level To display the noise level in tenths of a dB at each frequency on an upstream channel: Step

Command

Purpose

1.

show spectrum upstream [chan-wd>] r aw

Displays signal noise levels.

Where:

•

X/Y.C is the slot/port.channel specification.

•

is the channel width; default is 6400000

Example:

CASA- CMTS# FREQUENCY 6400000 5000000: 11400000: 17800000: 24200000: 30600000: 37000000: 43400000: 49800000: 56200000: 62600000:

show spectrum upstream 1/4.1 raw

NOI SE- LEVEL ( dB) 13. 0 19. 7 13. 4 14. 5 07. 8 00. 0 00. 0 10. 8 09. 0 09. 0


at channel - wi dt h


1-7

Debug cable modem

To determine the signal-to-noise ratio, subtract the dB from 42. In the above example, the SNR at 49.8 MHz is 31.2. This will support 16 QAM, but not QAM per the table. To debug the upstream ports, disconnect the port and run the show spectrum upstream command. The result should be 0. If the result is not 0, then there is a problem with the port.

Debug cable modem To view the messages between a cable modem and the CMTS, perform the following steps: Step

Command

Purpose

1.

debug cable mac-address

Specify the MAC address of the modem.

Where: is the media access control address of the

modem in hexadecimal format. Example:

CASA- CMTS# debug cabl e mac- addr ess 0015. f 2f e. c904

Specify the asterisk (*) wildcard to filter portions of the MAC address. CASA- CMTS# debug cabl e mac- addr ess 0015. *. * continued


1-8

Debugging and Diagnostics Reference Debug cable modem

Step

Command

Purpose

2.

[no] debug cable [cfg | cm-ctrl | cm-status | dcc | dhcp |

Specify the information to display.

dynsrv | load-balance | mac-address | packetcable | privacy | ranging | registr ation | service-group | specmgmt | tlv | verbose] Where:

•

cf g — Debug cm downloading configuration file.

•

cm-ctrl — Debug cable cm-ctrl msg.

•

cm-status — Debug cable cm-status msg.

•

dc c — Debug dynamic channel change.

•

dhcp — Debug dhcp process .

•

dynsvr — Debug dynamic service transactions.

•

load-balance — Debug cable load-balance [static |

To view all the ranging messages at one time, do not select an optional argument

dynamic]. •

mac-address — Select cable modem to debug.

•

packetcable — Debug packet cable.

•

privacy — Debug baseline privacy process.

•

ranging — Debug ranging process.

•

registration — Debug registration process.

•

service-group — Debug the service group.

•

specmgmt — Spectrum management process.

•

tl v — Debug TLV information on all MAC packets.

•

verbose — Detailed information.

Example:

CASA- CMTS# debug cable tlv Feb 26 14: 26: 08. 483 CET: TLV- Bl ock Byt es: Feb 26 14: 26: 08. 483 CET: 0x0000: 12 01 04 03 01 01 1D 01 01 19 1C 01 02 00 01 06 Feb 26 14: 26: 08. 483 CET: 0x0010: 01 07 07 01 03 08 04 00 00 00 00 09 04 00 00 1F Feb 26 14: 26: 08. 483 CET: 0x0020: 40 0A 04 00 00 00 00 18 29 01 02 00 02 06 01 07

3.

logging debugging


Turn on debug logging.


1-9

Cable modem flapping

Example outp ut: Ranging information [ Fr i Apr 3 13: 34: 34 2009] - DE- RNG- 1: Sendi ng RNG- RSP message t o 0018. c0bf . 1058 o n qam 0/ 0/ 3, power adj ust ment 0, f r equency adj ust ment 0, t i mi ng adj ust ment 0, st at us SUCCESS [ Fr i Apr 3 13: 34: 44 2009] - DE- RNG- 1: Gr ant 0018. c0bf . 1058 r angi ng oppor t uni t y on upst r eam 1/ 5/ 0, i uc 4 [ Fr i Apr 3 13: 34: 44 2009] - DE- RNG- 1: RNG_REQ message r ecei ved f r om 0018. c0bf . 105 8 on upst r eam 1/ 5/ 0, power of f set 0, f r equency of f set 234, t i mi ng of f set 0, si d 220 [ Fr i Apr 3 13: 34: 44 2009] - DE- RNG- 1: Sendi ng RNG- RSP message t o 0018. c0bf . 1058 o n qam 0/ 0/ 3, power adj ust ment 0, f r equency adj ust ment 0, t i mi ng adj ust ment 0, st at us SUCCESS

For spectrum management debugging, specify more options as follows: CASA- CMTS# [no]debug cable specmgmt [trace | poll | event | fft |fsm |hop]

Cable modem flapping To display the cable modems that continually re-register: CASA- CMTS# show cable flap-list


1-10

Debugging and Diagnostics Reference Cable modem configur ation information

Cable modem configuration infor mation To display the cable modem configuration information: Step

Command

Purpose

1.

show cable modem [ | ] [ verbose ]

Display the cable modem information.

Where: is one of the following:

•

classifiers — Classifiers information.

•

counters — Counter information.

•

cp e — CPE information.

•

dropped-packets — Dropped packets counters.

•

errors — Error counters.

•

mac — MAC layer information.

•

maintenance — Maintenance information.

•

multicast-session — Multicast session exists.

•

online — Display online cable modems

•

ph y — PHY information

•

qo s — Quality of Service (QOS) information

•

remote-query — show cable modem remote

information •

vendor — Vendor information

Example outp ut: MAC Addr ess I P Addr ess Pr i m Si d MAC Domai n Upst r eam Downst r eam Ti mi ng Of f set I ni t i al Ti mi ng Of f set Recei ved Power MAC Ver si on


: 0018. 6892. 89b8 : 10. 12. 170. 214 : 870 :2 : 4/ 13/ 0 : 0/ 1/ 0 : 2613 : 2612 : 0 dBmV : DOC2. 0


1-11

Cable modem configur ation inform ation

Qos Pr ovi si oned Mode Enabl e DOCSI S2. 0 Mode I ni t i al Rangi ng Message Regi st r at i on Request Mess age Phy Oper at i ng Mode Capabi l i t i es Opt i onal Fi l t er i ng Suppor t Number of CPE I Ps CFG Max- CPE Er r or s St n Mt n Fai l ur es Tot al US Fl ows Tot al DS Fl ows Tot al US Dat a Tot al US Thr oughput Tot al DS Dat a Tot al DS Thr oughput Ac t i ve Cl as si f i er s DSA/ DSX mess ages Dynami c Secr et Tot al Ti me Onl i ne

: DOC1. 0 :Y : RNG- REQ : REG- REQ : t dma : {Fr ag=Y, Concat =Y, PHS=N, Pr i v=N} : {802. 1P=N, 802. 1Q=N} :1 : 16 : 0 CRCs, 0 HCSes : 0 abort s, 0 exhaust ed :1 :1 : 392279 packet s, 62671197 byt es : 393 bi t s/ sec, 2 packet s/ sec : 725538 packet s, 978593918 byt es : 6140 bi t s/ sec, 4 packet s/ sec :0 : per mi t al l : 0000000000000000 : 159378 s

Sampl e out put f r om Mac Addr : 0018: 6892: 89b8 Sf i d : 2461823 Cur r ent St at e : Act i ve Si d : 870 Tr af f i c Pr i or i t y :0 Maxi mum Sust ai ned r at e : 2048000 bi t s/ sec Maxi mum Bur st : 1600 byt es Mi mi mum Reser ved r at e : 4000 bi t s/ sec Mi ni mum Packet Si ze : 0 byt es Admi t t ed QoS Ti meout : 0 seconds Act i ve QoS Ti meout : 0 seconds Maxi mum Concat enat ed Bur st : 0 byt es Schedul i ng Type : Best Ef f ort Request / Tr ansmi ssi on pol i cy : 0x0 I P ToS Over wr i t e[ AND- mask, OR- mask] : 0x0, 0x0 Cur r ent Thr oughput : 0 bi t s/ sec, 0 packet s/ sec Cont ent i on r equest : 94262 Pi ggyback r equest : 173510 Gr ant s sc hedul ed : 268341 Gr ant s not used : 0 Token bucket ( mi n r eser ved byt es) : 1467 Packet r ecei ved : 392284 Byt es r ecei ved : 62671708 ( byt es) HCS err ors : 0 CRC err ors : 0


1-12

Debugging and Diagnostics Reference Cable Cable mod em status

Sf i d : 2461951 Cur r ent St at e : Act i ve Si d : N/ A Tr af f i c Pr i or i t y : 0 Maxi axi mum Sust ai ned ned r at e : 12288000 bi t s/ sec Maxi mum Bur st : 3044 3044 byt byt es Mi mi mum Reser eser ved ved r at e : 0 bi t s/ sec Mi ni mum Packe Packett Si ze : 0 byt es Admi t t ed QoS Ti meout eout : 0 secon sec onds ds Act i ve QoS Ti meout eout : 0 seconds seconds Maxi mum Concat oncat enat enat ed Bur st : 0 byt byt es Sched chedu ul i ng Typ Type : Not yet yet def i ned Request / Tr ansmi ssi on pol i cy : 0x0 I P ToS Over wr i t e[ AND- mask, OR- mask] : 0x0, x0, 0x0 Cur r ent Thr oughput : 0 bi t s/ sec, sec, 0 packe cket s/ sec

Cabl Cable e modem sta s tatu tus s The CMTS displays the following status information about the cable modems: •

offline — No signal from cable cable modem.

•

init(r1) — Cable modem sent initial ranging.

•

init(r2) — Cable modem is ranging.

•

init(ov) — CMTS moving CM to a new channel during static load balancing.

•

init(rc) — Cable modem ranging complete.

•

init(ua) — Upstream channel adjustment (3.0 modems).

•

init(d) — DHCP discover received by CMTS.

•

init(i) — DHCP reply received from server; no DHCP request from CM.

•

init(e) — Early authentication encryption started (3.0 modems).

•

init(t) — TOD exchange started.

•

init(o) — CM has started to download the config file.

•

init(r) — CMTS received register-request from CM, but not reg-ack yet.

•

init(bpi) — Baseline privacy started.

•

online — Cable modem registered; enabled for data.

•

online(d) — CM registered, but network access for the CM is disabled.



1-13

Cable Cable mod em remote query

Cable modem remot e query To get information from the modem, perform the following steps: St ep

Co m m an d

Pu r p o s e

1.

Configure remote query at the CMTS and verify that the Where: remote query is also is the polling interval in seconds; 0 turns the remote query configured on the off. modem.

2.

show cable modem remote-query remote-query i mmediate community string

cable modem remote-query

Display the modem information.

Where:

•

is the the MAC MAC addre address ss assoc associat iated ed with with the the cable cable modem.

•

g> is the the text text defin defining ing the the commu communit nity y strin string. g.

Example Example outp ut: The show cable modem command outputs the following information about the modem: MAC Addr ddr ess

I P Addr ddr ess

S/ N Rat i o

US Pwr

DS TX Ti me Mi cr o( dB) dB) Pwr Of f set Ref l ect i on

Modem St at e

Casa Syst ems CMTS Release 6.0.3 6.0.3

1-14

Debugging and Diagnostics Reference Debug Debug PacketCable PacketCable

Debu Debug g PacketCabl PacketCable e The debug cable packetcable command provides the following information: St ep

Co m m an d

Pu r p o s e

1.

debug c able packetcable packetcable

Start PacketCable debugging.

Where:

•

cops — COPS messages.

•

events — Event messages.

•

information. gate — Gate information.

•

control — Gate control events.

•

docsis — DOCSIS messages.

Example:

CMTS# debug cable packetcable cops

Debu Debug g IP The debug ip commands are as follows: St ep

Co m m an d

Pu r p o s e

1.

debug ip [bgp | isis | multicast | ospf | rip | snmp]

Start IP debugging.

Where:

•

bg p — BGP routing information.

•

isis — IS-IS information.

•

multicast — Debug multicast packets.

•

— OSPF information. ospf —

•

ri p — Routing Information Protocol (RIP) information.

•

snmp — Debug IP SNMP.

Example:

CMTS# debug ip rip



1-15

Debug BGP

Debug BGP The Border Gateway Protocol (BGP) debug commands are as follows: Step

Command

Purpose

1.

[no] debug ip b gp [events |filters | fsm | keepalives | updates]

Start BGP debugging.

Where:

•

events — BGP events.

•

filters — BGP filters.

•

fsm — BGP Finite State Machine.

•

keepalives — BGP keepalives.

•

updates — BGP updates.

Example:

CMTS# debug ip bgp events


1-16

Debugging and Diagnostics Reference Debug IS-IS

Debug IS-IS The Intermediate System-to-Intermediate System (IS-IS) protocol commands are as follows: Step

Command

Purpose

1.

[no] debug i p isis [adj-packets | all |checksum-errors | events | local-updates | p rotocol -errors | route-events | snp-packets | spf-events | spf-statistics | spf-triggers | update-packets ]

Start IS-IS protocol debugging.

Where:

•

adj-packets — IS-IS Adjacency related packets.

•

all — All IS-IS packets.

•

checksum-errors — IS-IS LSP checksum errors.

•

events — IS-IS events.

•

local-updates — IS-IS local update packets.

•

protocol-errors — IS-IS LSP protocol errors.

•

route-events — IS-IS route related events.

•

snp-packets — IS-IS CSNP/PSNP packets.

•

spf-events — IS-IS Shortest Path First events.

•

spf-statistics — IS-IS SPF timing and statistic data.

•

spf-triggers — IS-IS SPF triggering events.

•

update-packets — IS-IS update related packets.

Example:

Display all IS-IS debugging statistics: CASA- CMTS# debug ip isis all [ Thu J ul 21 10: 47: 43 2011] - DE- CDB- 1: smm6: cdb_pop_ack_cache( ) : ack cache i s empt y, dbi d = 10( r epeat count 2) I S- I S Adj acency r el at ed packets debuggi ng i s on I S- I S l ocal updat es debuggi ng i s on I S- I S SPF t r i gger i ng event s debuggi ng i s on I S- I S aut hent i cat i on debuggi ng i s on I S- I S cl i ent / sever i nf or mat i on debuggi ng i s on



1-17

Debug OSPF

Debug OSPF This sction describes the debugging commands for the Open Shortest Path First (OSPF) routing protocol. The OSPF debug commands provide the following information:


1-18

Debugging and Diagnostics Reference Debug OSPF

Step

Command

Purpose

1.

[no] d ebug ip ospf [erro r | events | ism| lsa | nsm | nssa| packet]

Start OSPF debugging.

Where:

•

error — OSPF error information.

•

events — OSPF event information.

•

is m — OSPF Interface State Machine:

events status timers •

ls a — OSPF Link State Advertisement.

flooding generate install refresh •

ns m — OSPF Neighbor State Machine

events status timers •

nssa — OSPF NSSA information.

•

packet — OSPF packets.

Example:

Display a list of OSPF errors: CASA- CMTS# debug ip ospf error

Display a list of OSPF events: CASA- CMTS# debug ip ospf events continued



1-19

Debug OSPF

Step

Command (continued)

Purpose

Display information about the interface state machine: CASA- CMTS# debug ip ospf ism events CASA- CMTS# debug ip ospf ism status CASA- CMTS# debug ip ospf ism timers

Display information about link-state advertisement (LSA events: For flood events (updates received and acknowledgements): CASA- CMTS# debug ip ospf lsa flooding

For LSA events: CASA- CMTS# debug ip ospf lsa generate

For other events: CASA- CMTS# debug ip ospf lsa install CASA- CMTS# debug ip ospf lsa refresh

Display messages containing information about neighbor events: CASA- CMTS# debug ip ospf nsm events CASA- CMTS# debug ip ospf nsm timers CASA- CMTS# debug ip ospf nsm status

Display messages containing information about nssa: CASA- CMTS# debug ip ospf nssas


1-20

Debugging and Diagnostics Reference Debug OSPF

OSPF packet inf ormation To display information about each packet transmitted and received: Step

Command

Purpose

1.

debug ip os pf packet [all|dd|hello|ls-ack|ls-request|ls-update] [(send [detail]|recv [detail]|detail)]

Display information about each packet transmitted and received.

Where:

•

all —Lists all OSPF packets.

•

dd — Gives the database description.

•

hello — Shows the OSPF hello traffic.

•

ls-ack — Shows the OSPF link state acknowledgements.

•

ls-request — Shows the link state requests.

•

ls-update — Shows the link state update.

•

send — Displays the sent packets.

•

detail — Shows the details.

•

recv — Displays the received packets.

Example:

CASA- CMTS# debug ip ospf packet all



1-21

Debug RIP

Debug RIP The Routing Information Protocol (RIP) commands provide event and packet information. Step

Command

Purpose

1.

debug ip rip [events | packets]

Display RIP information.

Where:

•

events — RIP events.

•

packets — RIP packets.

Example:

CASA- CMTS# debug ip rip packets

Debug LACP The Link Aggregation Protocol (LACP) commands provide finite state machine, events and LACP packet information: Step

Command

Purpose

1.

debug ip lacp [fsm| events | packets]

Display LACP information.

Where: •

fsm — Finite state machine.

•

events — LACP events.

•

packets — LACP packets.

Example:

CASA- CMTS# debug ip lacp fsm


1-22

Debugging and Diagnostics Reference Connection testing

Connection testing For testing connectivity, the Casa CMTS supports the extended ping command with Linux arguments that you enclose in quotations (“”). In the following example, 192.168.3.8 is a host on the gige side and 10.248.1.1 is the IP-bundle interface. CASA- CMTS# ping "-I 10.248.1.1 192.168.3.8" PI NG 192. 168. 3. 8 ( 192. 168. 3. 8) f r om 10. 248. 1. 1 64 byt es f r om 192. 168. 3. 8: i cmp_seq=1 t t l =64 t i 64 byt es f r om 192. 168. 3. 8: i cmp_seq=2 t t l =64 t i 64 byt es f r om 192. 168. 3. 8: i cmp_seq=3 t t l =64 t i


: 56( 84) me=0. 357 me=0. 372 me=0. 361

bytes of dat a. ms ms ms

2-1

Chapter 2. Casa CMTS diagnostics commands

The Casa CMTS supports the following diagnostics: •

SMM (GigE) and QAM diagnostics

•

Upstream and downstream diagnostics

•

DHCP tracing

•

System kernel messages

•

GigE interface monitoring

•

IP path tracing

•

Cable modem traffic monitoring

•

Core dumps

In addition, problems with the kernel will usually leave core dumps in memory that can be retrieved and sent to Casa for analysis. The diagnostics are available in diagnostic mode, by entering "diag" at the enable prompt and then entering the password. This chapter covers the following topics: Topic

Page

SMM diagnostics

2-2

QAM diagnostics

2-4

Downstream and upstream interface statistics

2-4

Checking for downstream errors

2-8

Upstream diagnostics (Release 5.4 only)

2-9

Past DHCP transactions

2-9


2-2

Debugging and Diagnostics Reference SMM diagnostics

Topic

Page

System kernel messages

2-10

Capturing packets on the GigE interfaces

2-11

Tracing the IP path

2-13

Capturing cable modem traffic on the SMM

2-16

Displaying cable modems by modem ID

2-18

Core dumps

2-19

Removing old core dump files

2-19

Testing connectivity (extended Ping)

2-20

Other diagnostic commands

2-20

ARP table entry

2-21

Auto-reboot

2-21

Set the CPU receive rate

2-22

Turning power on and off to individual CMTS module

2-22

Shutdown or restart SNMP

2-23

Show ACL applications

2-23

Reboot a module unconditionally

2-24

Show kernel interface information

2-25

Display modem information by QAM

2-26

Display VLAN information

2-28

Display information about modems on a VLAN

2-29

SMM diagnostics Two diagnostic commands are available for the SMM. One reports information on the network side, and the other reports information about the path between the SMM and the line cards. The second command is described in the section, “QAM diagnostics.”


Casa CMTS diagnostics commands

2-3

SMM diagnostics

To obtain information about the SMM GigE ports: Step

Command

Purpose

1.

diag

Enter diagnostic mode in the CLI.

Example:

CASA- CMTS# diag CASA- CMTS( di ag) #

2.

show gige stats Where: is the GigE port number on the SMM. Example:

CASA- CMTS( di ag) #show gige 2 stats

Example outp ut: CMTS( di ag) #show gige stats snmpI f I nOct et s = 359733, snmpI f I nUcast Pkt s = 2002 snmpI f I nNUcast Pkt s = 453, snmpI f I nDi sc ar ds = 378 snmpI f I nEr r or s = 0, snmpI f I nUnknownPr ot os = 0 snmpI f Out Oct et s = 386113, snmpI f Out Ucast Pkt s = 2055 snmpI f Out NUcast Pkt s = 234, snmpI f Out Di sc ar ds = 0 snmpI f Out Er r or s = 0, snmpI f Out QLen = 0 snmpI pI nRecei ves = 1808, snmpI pI nHdr Er r or s = 0 snmpI pFor wDat agr ams = 1402, snmpI pI nDi scar ds = 0 snmpDot 1dBasePor t Del ayExceededDi scar ds = 0, snmpDot 1dBasePor t Mt uExceededDi scar ds = 0 snmpDot 1dTpPor t I nFr ames = 2456, snmpDot 1dTpPor t Out Fr ames =2289 snmpDot 1dPor t I nDi sc ar ds = 0, snmpEt her St at sDr opEvent s = 0 snmpEt her St at sMul t i cast Pkt s = 580, snmpEt her St at sBr oadcast Pkt s=108 snmpEt her St at sUnder si zePkt s = 0, snmpEt her St at sFr agment s = 0 snmpEt her St at sPkt s64Oct et s = 767, snmpEt her St at sPkt s65t o127Oct et s = 1383


2-4

Debugging and Diagnostics Reference QAM diagnostic s

QAM diagnostics The QAM diagnostics reports statistics about the QAM card, information about the memory, and information about the data path between the SMM and the QAM. Step

Command

Purpose

1.

diag


Example:


2.

show module stat qam Where: is QAM slot number. Example:

CASA- CMTS( di ag) # show module 2 stat qam

Example outp ut: CASA- CMTS( di ag) # show module 2 stat qam mux_mgr _cnt : 512 pmt _mgr _f r ee_cnt : 512 pi d_mgr _f r ee_cnt : 2000 pg_queue_f r ee_c nt : 464 pkt_r ecv_cnt : 0 pkt _dr op_cnt : 0 pkt _ nul l _ c f g: 0 pkt _no_egr ess: 0 t s_pkt _r ecv_cnt : 0 t s_pkt_drop_cnt : 0 hi buf _enqueued: 0 hi buf _dequeued_t x: 0 hi buf _enqueued_f ai l ed: 0 hi buf _dr op: 0 hi buf _dept h: 0 over f l ow hi buf t o be f r ee: 0 as i pkt t x: 0 asi dat a r at e: 0 docsi s pkt send cnt : 0 docsi s pkt dr op cnt : 0 docsi s upst r eam dat a pkt cnt : 18297


Show the QAM module statistics.


2-5


docsi s downst r eam uni cast pkt cnt : 20 enqueue l i mi t per sf : 45000 pkt dr op due t o enqueue l i mi t : 0 ups_ pr oc_s t ep = 80 ds_pr oc_s t ep = 80 ds_ dat a_enqueue_cnt = 0

Downstream and upstream interface statistics The interface diagnostics reports downstream and upstream interface information. Step

Command

Purpose

1.

diag


Example:


2.

Show the QAMdownstream interface statistics.

show i nterface qam stat is QAM slot number. Example: Release 5.4

CASA- CMTS( di ag) #show interface qam 0/1 stat Example: Release 5.2

CASA- CMTS( di ag) #show interface qam 0/0

3.

Show the QAMdownstream interface statistics.

show interface upstream stat is QAM slot number. Example: Release 5.4

CASA- CMTS( di ag) # show interface upstream 0/1 stat

Example: Release 5.2

CASA- CMTS( di ag) # show interface upstream 3/2


2-6

Debugging and Diagnostics Reference Downstream and upstream interface statistics

Example outpu t: show interface qam (Release 5.4) CASA- CMTS( di ag) # show interface qam 0/1 stat I nt er f ace QAM 0/ 1 I P addr ess not assi gned MAC addr ess 0017. 1001. d189 Admi n St at us: UP Channel 0: Fr equency : 573000000 Net wor k I D : 0 Tr anspor t St r eam I D : 0 Cur r ent t hr oughput : 492 ( Kb/ s) Number of act i ve St r eams: 0 Admi n St at us : UP Channel 1: Fr equency : 579000000 Net wor k I D : 0 Tr anspor t St r eam I D : 0 Cur r ent t hr oughput : 492 ( Kb/ s) Number of act i ve St r eams: 0 Admi n St at us : UP Channel 2: Fr equency : 585000000 Net wor k I D : 0 Tr anspor t St r eam I D : 0 Cur r ent t hr oughput : 496 ( Kb/ s) Number of act i ve St r eams: 0 Admi n St at us : UP Channel 3: Fr equency : 591000000 Net wor k I D : 0 Tr anspor t St r eam I D : 0 Cur r ent t hr oughput : 496 ( Kb/ s) Number of act i ve St r eams: 0 Admi n St at us : UP

Example outp ut: sho w in terface qam (Release 5.2) CASA- C2200- 152( di ag) #show i nt er f ace qam 0/ 0 i nt er f ace qam 0/ 0 no spect r al i nver si on on annex B modul at i on 256qam i nt er l eave 16 power 510 channel 0 f r equency 615000000 channel 0 dsg dcd- enabl e no channel 0 shut down channel 1 f r equency 621000000 channel 1 dsg dcd- enabl e no channel 1 shut down



2-7


channel 2 f r equency 627000000 channel 2 dsg dcd- enabl e no channel 2 shut down channel 3 f r equency 633000000 channel 3 dsg dcd- enabl e no channel 3 shut down no shut down !

Example outp ut: sho w in terface upstr eam (Release 5.4) CASA- CMTS( di ag) # show interface upstream 1/0 stat I nt er f ac e ups t r eam 1/ 0 s t at i s t i c s Admi n st at us: UP Recei ved 18 br oadcast s, 0 mul t i cast s, 52736 uni cast s 0 di scar ds, 0 err ors , 0 unknown pr ot ocol 84809 Uner r or eds, 0 Cor r ect eds, 0 Uncor r ect abl es Tot al Modems On Thi s Upst r eam Channel : 1 , 1 act i ve cm, 0 secondar y cm Req Msl ot s 1883329570, Used Req Msl ot s 21280 I ni t Mt n Msl ot s 142217505, Used I ni t Mt n Msl ot s 0 Tot al Msl ot s 2025800893, Ucast Gr ant ed Msl ot s 253802 Avg upst r eam channel ut i l i zat i on: 0 Channel ut i l i z at i on i nt er val : 30

Example outp ut: sho w in terface upstr eam (Release 5.2) CASA- CMTS( di ag) # show interface upstream 3/2 i nt er f ace upst r eam 3/ 2 f r equency 28000000 channel - wi dt h 3200000 power - l evel 0 power - adj ust ment cont i nue 2 power - adj ust ment noi se- per cent age 30 power - adj ust t hr eshol d 1 voi ce- bw- r eser ve 75 r at e- l i mi t no i ngr ess- cancel l at i on l ogi cal - channel 0 pr ov- at t r - mask 0x0 l ogi c al - c hannel 0 pr of i l e 2 l ogi cal - channel 0 mi ni sl ot 2 l ogi cal - channel 0 dat a- backof f aut omat i c l ogi cal - channel 0 r angi ng- backof f 0 4 no l ogi cal - channel 0 pr e- equal i zat i on l ogi cal - channel 0 r angi ng- pr i or i t y 0x0 l ogi cal - channel 0 cl ass- i d 0x0 no l ogi cal - channel 0 shut down no shut down


2-8

Debugging and Diagnostics Reference Checking for do wnstream errors

Checking for downstream errors When checking for downstream errors between any QAM and the SMM from diagnostic mode, note the following: •

eth 1 is the QAM to SMM interface

•

eth 2 is the QAM to FPGA interface

If the errors on the eth 1 interface exceed 0.1% (divide errors by total rx), the SMM is likely the cause of the errors. To confirm, replace the QAM and see if the errors are still present. The following trouble-shooting steps will be necessary: 1.

If there are spares, swap the QAM first and recheck.

2.

If the errors persist after swapping the QAM, swap the SMM.

3.

If there are still errors, then the card cage must be replaced.

To check for downstream errors: Step

Command

Purpose

1.

diag


Example:

CASA- CMTS# diag CASA- CMTS ( di ag) #

2.

show module stat gige Where: is QAM module number. Example:

CASA- CMTS( di ag) # show module 2 stat gige

Example outp ut: CASA- CMTS( di ag) # show module 2 stat gige Por t et h1 or et h2: t ot al r x : 351556736 dma0 : 71148 dma1 : 351485588 ker nel : 3372


Show the QAM downstream statistics.


2-9

Upstream diagno stic s (Release 5.4 only)

l ocal : dr op : er r or : c r c er r : hi _wat er 0 : hi _wat er 1 : bi t r a t e r x 0: bi t r at e r x1: bi t r at e t x0: t ot al t x ker nel dr op er r or

: : : :

351556736 0 0 0 4 11 0 2585360 8192

0 or less than .1% when divided by total rx

1558768 11167 0 0

Upstream diagnostics (Release 5.4 only) To obtain the SMM and the upstream card diagnostics, use the same command as described in the previous section.

Past DHCP transactions For problems with modems registering over the Dynamic Host Control Protocol (DHCP), check the 128 past DHCP transactions: Step

Command

Purpose

1.

diag


Example:


2.

show dhcp-trace

Show DHCP transactions.

Example:

CASA- CMTS( di ag) # show dhcp-trace

Example outp ut: CASA- CMTS( di ag) # show dhcp-trace 0

US DI S xi d=0149d38f domai n=02 l c=1 ch= 2 t m=49f 91c34 cm_i d=00000022


2-10

Debugging and Diagnostics Reference System kernel messages

yi p=000. 000. 000. 000 00: 12: c9: 20: 5a: ea xi d=0149d38f domai n=02 l c=1 ch= 0 yi p=010. 231. 001. 128 00: 12: c9: 20: 5a: ea xi d=0149d38f domai n=02 l c=1 ch= 2 00: 12: c9: 20: 5a: ea xi d=0149d38f domai n=02 l c=1 ch= 0 yi p=010. 231. 001. 128

gw=010. 231. 001. 001 s=192. 168. 009. 001 0

DS OFF

t m=49f 91c34 cm_i d=00000022 gw=010. 231. 001. 001 s=192. 168. 009. 001 0

US REQ

t m=49f 91c34 cm_i d=00000022 yi p=000. 000. 000. 000 gw=010. 231. 001. 001 s=192. 168. 009. 001 0 DS ACK t m=49f 91c34 cm_i d=00000022

System kernel messages Serious problems with the CMTS system kernel will result in error messages that are collected in non-volatile random-access memory (NVRAM). To view these messages, use the show dmesg command. Step

Command

Purpose

1.

diag


Example:


2.

show dmesg

Show CMTS system kernel messages.

Example:

CASA- CMTS( di ag) # show dmesg

Look for messages that are repeated more than 10 times. Messages containing the words “oops,” “panic,” “warning,” are considered critical as in the examples below: [ 1265795931] Oops i n ar ch/ mi ps/ mm/ f aul t . c: : do_page_f aul t , l i ne 185[ #1] : [ 1265795931] Cpu 0 1265795931] $ 0 : 00000000 10001f 01 00000000 00000000 1265795931] $ 4 : 803f 0004 00000000 00000057 82f 69f 2a 1265795931] $ 8 : 82f 69f e0 00001f 00 00000000 82f ca000

Copy these messages and send them to [email protected]. Casa Systems CMTS Release 6.0.3


2-11

Capturing packets on the GigE interfaces

Capturing packets on the GigE interfaces To capture the packets on a GigE interface, use the tcpdump command. To display the output on the screen or to write the output to a file, perform these steps: Step

Command

Purpose

1.

diag


Example:


2.

Start the tcpdump routine on a GigE interface.

tcpdump “ -i gige ” Where:

•

-i — Specifies that an interface on which to listen will be

specified in the next argument. • — The GigE interface number on the SMM. Example:

CASA- CMTS( di ag) # t cpdump “- i gi ge 1”

3.

tcpdmp “ -i gige -w /fdsk/filename Where:

•

Write tcpdump output to a file on the SMM.


specified in the next argument. • — The GigE interface port number on the SMM. •

-w — Write the output to the specified directory and filename on the SMM. The dir command displays the file.

Example:

CASA- CMTS( di ag) # tcpdump "-i gige 1 -w / fdsk/test.out”

To read the file, move it from the SMM to a TFTP server.


2-12

Debugging and Diagnostics Reference Capturing packets on the GigE interfaces

Use the other tcpdump arguments to specify specific traffic to capture, such as traffic running over UDP ports 67 and 68.

Example CMTS( di ag) #tcpdump "-i gige 0 -vvv udp port 67 or udp port 68"

To collect the traffic to a specific host (such as the DHCP server):

Example CMTS( di ag) #t cpdump "- i gi ge 0 host 192. 168. 1. 1”

Example outp ut: ***** Type Ct r l - C t o exi t ***** t cpdump: l i st eni ng on et h2, l i nk- t ype EN10MB ( Et her net) , capt ur e si ze 65535 byt es 38 packet s capt ur ed 38 packet s r ecei ved by f i l t er 0 packet s dr opped by ker nel Sampl e f i l e l i s t i ng: 19106 Dec 22 13: 37 cor e. SMM- cr l _r pc_s er ver . 275. t xt 454281 J an 27 15: 49 cor e. SMM- shel l . exe. t ar . gz 2411 J an 27 15: 49 cor e. SMM- shel l . exe. t xt 24 Mar 9 14: 35 t est . out

Parse the file and send it to [email protected].



2-13

Tracing th e IP path

Tracing the IP path To trace the IP path from any source to any destination, use the traceroute command with the following options. The options must be enclosed in quotation marks. Step

Command

Purpose

1.

diag


Example:


2.

CMTS(diag)# traceroute " [ -dFInrvx ] [ -f first _ttl ] [ -g gateway] [ -i iface ] [ -m max_ttl ] [ -p por t ] [ -q nq ueries ] " [ -s src_addr] [ -t tos ][ -w waittime ] [ -z pausemsecs ] host [ packetlen ]"

Trace the IP path from source to destination.

Where:

•

-d — Enable socket level debugging.

•

-F — Set the "Don't Fragment" bit.

•

-I — Use ICMP ECHO for probes.

•

-n — Do not try to map IP addresses to host names when

displaying them. •

-r — Bypass the normal routing tables and send directly to

a host on an attached network. If the host is not on a directly-attached network, an error is returned. This option can be used to ping a local host through an interface that has no route through it. •

-v — Verbose output. Received ICMP packets other than

TIME_EXCEEDED and UNREACHABLEs are listed. •

-x — Toggle IP checksums. Normally, this prevents

traceroute from calculating IP checksums. In some cases, the operating system can overwrite parts of the outgoing packet but not recalculate the checksum (so in some cases the default is to not calculate checksums and using –x causes them to be calculated). Note that checksums are usually required for the last hop when using ICMP ECHO probes ( -I ). So they are always calculated when using ICMP.


2-14

Debugging and Diagnostics Reference Tracing t he IP path

Step

Command

Purpose

continued •

-f first_ttl — Specifies with what TTL to start. Defaults to

1. •

-g gateway — Tells traceroute to add an IP source routing

option to the outgoing packet that tells the network to route the packet through the specified gateway. Not very useful because most routers have disabled source routing for security reasons. •

-i iface — Specifies the interface through which traceroute

should send packets. By default, the interface is selected according to the routing table. •

-m max_ttl — Specifies the maximum number of hops

(max time-to-live value) traceroute will probe. The default is 30. •

-p port — For UDP tracing, specifies the destination port

base traceroute will use (the destination port number will be incremented by each probe). •

-q nqueries — Sets the number of probe packets per hop.

The default is 3. •

-s src_addr — Chooses an alternative source address.

Note that you must select the address of one of the interfaces. By default, the address of the outgoing interface is used. •

-t tos — For IPv4, set the Type of Service (TOS) and

Precedence value. Useful values are 16 (low delay) and 8 (high throughput). Note that in order to use some TOS precendence values, you have to be super user. •

-w waittime — Set the time (in seconds) to wait for a

response to a probe (default 5.0 sec.). •

-z pausemsec —Minimal time interval between probes

(default 0). If the value is more than 10, then it specifies a number in milliseconds, else it is a number of seconds (float point values allowed too). Useful when some routers use rate-limit for icmp messages. •

host — Host name or IP address.

•

packetlen — The default probe datagram length is 38

bytes, but this may be increased by specifying a packet size (in bytes) after the destination host name.



2-15

Tracing th e IP path

Example outp ut: t r acer out e t o veri zon. net ( 206. 46. 232. 39) , 30 hops max, 38 byt e packet s 1 192. 168. 2. 1 ( 192. 168. 2. 1) 0. 564 ms 0. 438 ms 0. 402 ms 2 192. 168. 1. 1 ( 192. 168. 1. 1) 1. 724 ms 1. 482 ms 1. 334 ms 3 192. 168. 0. 1 ( 192. 168. 0. 1) 3. 573 ms 3. 308 ms 3. 400 ms 4 209. 101. 35. 209 ( 209. 101. 35. 209) 4. 334 ms * 4. 179 ms 5 208- 41- 205- 1. cl i ent . dsl . net ( 208. 41. 205. 1) 20. 577 ms 16. 912 ms 19. 954 ms 6 ge- 2- 2- 0. c00. nyc. megapat h. net ( 155. 229. 123. 121) 19. 863 ms 17. 526 ms 19. 568 ms 7 ge- 6- 5. car 1. NewYor k1. Level 3. net ( 209. 246. 126. 1) 19. 946 ms 17. 224 ms 19. 897 ms 8 vl an69. cs w1. NewYor k1. Level 3. net ( 4. 68. 16. 62) 19. 893 ms 17. 967 ms 19. 767 ms 9 ae- 64- 64. ebr 4. NewYor k1. Level 3. net ( 4. 69. 134. 113) 24. 904 ms 22. 647 ms * 10 ae- 6- 6. ebr 2. NewYor k2. Level 3. net ( 4. 69. 141. 22) 19. 224 ms 17. 346 ms 19. 626 ms 11 ae- 2- 52. edge2. NewYor k2. Level 3. net ( 4. 69. 138. 227) 23. 098 ms 17. 541 ms ae- 1- 51. edge2. NewYor k2. Level 3. net ( 4. 69. 138. 195) 25. 399 ms 12 0. ge- 2- 0- 0. BR3. NYC4. ALTER. NET ( 204. 255. 173. 53) 17. 668 ms mci - l evel 3- xe. newyor k2. Level 3. net ( 4. 68. 110. 234) 17. 970 ms mci - l evel 3- xe. newyor k2. Level 3. net ( 4. 68. 110. 106) 57. 640 ms 13 0. xe- 0- 1- 3. XL3. NYC4. ALTER. NET ( 152. 63. 17. 58) 18. 088 ms 0. xe- 5- 0- 3. XL3. NYC4. ALTER. NET ( 152. 63. 18. 6) 17. 976 ms 0. xe- 5- 1- 3. XL3. NYC4. ALTER. NET ( 152. 63. 16. 182) 19. 120 ms 14 0. ge- 7- 2- 0. XL3. DFW7. ALTER. NET ( 152. 63. 0. 34) 102. 254 ms 101. 897 ms 104. 069 ms 15 POS7- 0. GW2. DFW13. ALTER. NET ( 152. 63. 103. 229) 103. 922 ms POS6- 0. GW2. DFW13. ALTER. NET ( 152. 63. 103. 225) 102. 292 ms 101. 520 ms 16 ver i zon- gw. cust omer. al t er . net ( 63. 65. 122. 26) 104. 015 ms 102. 131 ms 103. 928 ms 17 po121. ct n- cor e1. vzl i nk. com( 206. 46. 225. 18) 114. 777 ms 101. 656 ms 103. 760 ms 18 206. 46. 228. 130 ( 206. 46. 228. 130) 104. 236 ms 101. 775 ms 104. 338 ms 19 206. 46. 232. 34 ( 206. 46. 232. 34) 103. 508 ms 102. 530 ms 103. 747 ms


2-16

Debugging and Diagnostics Reference Capturing cable modem traffic on the SMM

Capturing cable modem traffic on the SMM To capture the traffic to and from a cable modem on the SMM (in flash) instead of a remote server, use the mirror and tcpdump commands together. First, open one window on the CMTS and start the mirror command (where 1.0.0.7 is the IP address of the SMM interface): Step

Command

Purpose

1.

diag


Example:


2.

mirror cm tr affic Where:

•

— IP address of the SMM.

•

— MAC address of the cable modem.

Example:

CASA- CMTS( di ag) # mirror cm traffic 1.0.0.7 0018.c0bf.1058

Mi r r or i ng t r af f i c f or CM 0014. f 887. d939 t o 0x1000007


Begin monitoring cable modem traffic.


2-17

Capturing cable modem traffic on the SMM

Step

Command

Purpose

3.

tcpdmp “ -i gige -w /fdsk/filename -s 0 udp port or udp por t ”

Write tcpdump output to a file on the SMM.

Where:

•


specified in the next argument. • — Indicates the GigE interface port number on the SMM. •

-w — Writes the output to the specified directory and filename on the SMM. The dir command displays the file.

• /fdsk/filename — Specifies the name of the destination file to which tcpdump information is written. •

-s — Specifies the number of bytes of data per packet.

•

0 — Specifies the number of bytes of data per packet. 0

indicates no limit to the number of bytes. •

— The UDP upstream and downstream

port addresses. Example:

CASA- CMTS( di ag) # tcpdump "-i gige1 -w / fdsk/file.out -s 0 udp port 0xcace or udp port 0xcacf”

To read the file, move it from the SMM to a TFTP server.

Example outp ut: CASA- CMTS( di ag) # tcpdump "-i gige1 -w /fdsk/file.out -s 0 udp port 0xcace or udp port 0xcacf” ***** Type Ct r l - C t o exi t ***** t cpdump: l i st eni ng on et h2, l i nk- t ype EN10MB ( Et her net ) , capt ur e si ze 65535 byt es

In the first window, reset the cable modem. After a few minutes, type Ctrl-C key combination to stop the capture, then transfer the file to the TFTP server. (Remember to delete it from the SMM after transferring it.)


2-18

Debugging and Diagnostics Reference Displaying cable modems by modem ID

On the TFTP server, run the ccap command (./ccap test.out) to create a file called out.cap. Use FTP to transfer this file to a PC running Wireshark (or a program equivalent to Wireshark). Change the Wireshark settings by editing preferences and frame protocols by checking off the “Treat all frames as DOCSIS frames” box. Wireshark will decode the DOCSIS control packets.

Displaying cable modems by modem ID Cable modem status can be displayed by specifying the cable modem identifier from the CMTS diag mode. Gathering cable modem information using the CMTS identifier may be helpful when troubleshooting modem problems. Step

Command

Purpose

1.

diag


Example:


2.

Begin monitoring cable modem traffic.

show cable Where:

•

— Specifies the cable modem ID in the

range 1 to 4294967295. • Example:

CASA- CMTS( di ag) # show cabl e modem 1

Example CASA- C3000( di ag) #s how cabl e modem 1 MAC Addr ess I P Addr ess US I nt f 0026. 5e77. 43ba 0. 0. 0. 0 3/ 1/ 0* 2000: 232: 1: : 6de2: d447

DS I nt f 0/ 0/ 1*

MAC St at us onl i ne( pt)

Pr i m RxPwr Ti mi ng Num BPI Si d ( dB) Of f set CPEs Enb 29 - 0. 2 2359 0 yes

CASA- C3000( di ag) #s how cabl e modem 2 MAC Addr ess I P Addr ess US

DS

MAC

Pr i m RxPwr Ti mi ng Num BPI



2-19

Core dumps

0024. 0147. 9a2c 10. 232. 1. 51

I nt f 3/ 1/ 0

CASA- C3000( di ag) #show cabl e modem 3 MAC Addr ess I P Addr ess US I nt f 5cac. 4c9c. 793b 0. 0. 0. 0 3/ 1/ 0* 2000: 232: 1: : f 6ba: e732 CASA- C3000( di ag) #

I nt f 0/ 0/ 0

St at us onl i ne( pt)

Si d 27

( dB) 0. 0

Of f set CPEs Enb 2357 0 yes

DS I nt f 0/ 0/ 1*

MAC St at us onl i ne( pt )

Pr i m RxPwr Ti mi ng Num BPI Si d ( dB) Of f set CPEs Enb 30 - 0. 2 2363 0 yes

Core dumps Serious problems with the kernel processes will cause the system to dump core memory. These core dumps contain useful data for Casa engineering. Use the ls or dir commands to see if these files exist. Core dumps start with the word core in the title as in: 637205 18395 424762 17561

Dec Dec Nov Nov

4 4 9 9

11: 08 11: 08 13: 09 13: 09

cor e. QAM- 0- qam_daemon. 145. t ar . gz cor e. QAM- 0- qam_daemon. 145. t xt cor e. SMM- snmpd. 292. t ar . gz cor e. SMM- snmpd. 292. t xt

Use TFTP to transfer both the text and gz files; send them to [email protected].

Removin g old cor e dump f iles Delete old core dumps from memory: Step

Command

Purpose

1.

diag


Example:


2.

Remove old core dump files.

coredump cleanup Example:

CASA- CMTS( di ag) # cor edump cl eanup


2-20

Debugging and Diagnostics Reference Testing connectivity (extended Ping)

Testing connectivity (extended Ping) For testing connectivity, the Casa CMTS supports the extended ping command with Linux arguments that you enclose in quotations (“”). In the following example, 192.168.3.8 is a host on the gige side and 10.248.1.1 is the IP-bundle interface. CASA- CMTS# ping "-I 10.248.1.1 192.168.3.8" PI NG 192. 168. 3. 8 ( 192. 168. 3. 8) f r om 10. 248. 1. 1 64 byt es f r om 192. 168. 3. 8: i cmp_seq=1 t t l =64 t i 64 byt es f r om 192. 168. 3. 8: i cmp_seq=2 t t l =64 t i 64 byt es f r om 192. 168. 3. 8: i cmp_seq=3 t t l =64 t i

Other diagnostic commands Other useful diagnostic commands include: •

Get ARP table entry

•

Auto-reboot

•

Set CPU receive rate

•

Turn off power modules

•

Shutdown/restart SNMP

•

Show ACL applications

•

Reboot module unconditional

•

Show kernel interface

•

Display modem information by QAM

•

Display VLAN information

•

Display information about modems on a VLAN


: 56( 84) me=0. 357 me=0. 372 me=0. 361

bytes of dat a. ms ms ms


2-21


ARP tab le entry To get the ARP entry for a specific host: Step

Command

Purpose

1.

diag


Example:


2.

Get host ARP entry.

arp get Where: is the host IP address. Example:

CASA- CMTS( di ag) # arp get 192.168.8.232

Auto-reboot To configure the CMTS to auto-reboot if it does not receive a response from a specified host within 40 seconds: Step

Command

Purpose

1.

diag


Example:


2.

Set CMTS to auto-boot.

auto-reboot monitor Where: is the host IP address. Example:

CASA- CMTS( di ag) #aut o- r eboot moni t or 192. 168. 8. 100


2-22

Debugging and Diagnostics Reference Other diagnostic commands

Set the CPU receiv e rate To set the receive rate from the gigabit switch to the CPU interface: Step

Command

Purpose

1.

diag


Example:


2.

gigabit-rx-cpu-rate

Set the CPU receive rate.

Where: is number between 0 and 8000 packets per second. Example:

CASA- CMTS( di ag) # gigabit-rx-cpu-rate 1000

Turnin g pow er on and off t o in divid ual CMTS module To individually turn power on and off to specified CMTS modules: Step

Command

Purpose

1.

diag


Example:


2.

power module {on | off} Where: specifies the module number in the range

0 to 15 depending on the specific CMTS you are managing. Example:

CASA- CMTS( di ag) # power module 4 off


Turn a specific power module on or off.


2-23


Shutdow n or r estart SNMP To reset SNMP, first shut it down and then restart it. Step

Command

Purpose

1.

diag


Example:


2.

Shutdown and restart SNMP.

snmp shutdown snmp r estart Example:

CASA- CMTS( di ag) # snmp shutdown CASA- CMTS( di ag) # snmp restart

Show ACL applic ations To show the application when an access control list is applied: Step

Command

Purpose

1.

diag


Example:


2.

Show the ACL-associated applications.

show i p access-list applications Where: is the access list name.

This command accepts output modifiers. Example:

CASA- CMTS( di ag) # show ip access-list acl50 applications


2-24


Reboot a module uncon ditio nally To force a module to reboot in the event that the module reboot command does not complete: Step

Command

Purpose

1.

diag


Example:


2.

reboot module uncondi tional Where: is the slot number of the module to be rebooted. Example:

CASA- CMTS( di ag) # reboot module 3 unconditional


Force an unconditional reboot of a specific module.


2-25


Show kernel interface infor mation To show information about the access control lists per interface: Step

Command

Purpose

1.

diag


Example:


2.

Show kernel interface information.

show kernel interface acl Where: is one of the following options:

•

eth — Ethernet interface with port specified.

•

gige — GigE interface with port specified.

•

trunk — Trunk interface with port specified.

•

loopback — The loopback interface number .

•

docsis-mac — The DOCSIS mac-domain ID.

•

access-class {in | ou t} — The system-level access class

(in or out). Example:

CASA- CMTS( di ag) # show kernel interface docsis-mac 4 acl


2-26


Display modem information by QAM To show the information about a modem associated with the QAM on which it is registered: Step

Command

Purpose

1.

diag


Example:


2.

show qo s ds cm qam ip address Show modem

information by QAM. Where:

•

is the QAM module number.

•

is the IPV4 or IPV6 address of the modem.

Example:

CASA- CMTS( di ag) # show qos ds cm qam 4 ip address 4.5.6.7

Example outp ut: t t l =341785873 i p=341228169 uni =340333695 mc=0 nx=0 t y=1 l c= 0 mcast =0000 pcnt =35 10. 155. 127. 149 00186855961d cm_i d=2983 ci d=10 cm_t bl _i dx= 3786 cm_i d=2983 ci d=10 psi d=1452 v=0 00186855961d t ek=025b1568 pkt : 0 18419 dbyt e=14743143 ar p: 18 14 dhcp: 2 2 maxi p: 16 2 0 a=0 l =1 SF sf =01793f 48 nx=017a4748 cm=2983 sf i d=763903 dsi d=1452 domai n=3 f =01 t os_ow =0xf f 00 cnt pkt =18180 byt e=13621440 pkt sent =18180 byt e sent =13621440 over _mx dr op_pkt =0 dr op_byt e=0 enqueue 0 pkt 0 byt e mar ker _i n 0 enqueue_pr i or i t y 0 enqueue_l i mi t 750000 qos_set_ t ype: 06 docsi s ver si on: 0 act i ve: pr i or i t y=0 g_r at e=0 g_bucket =60880 mx_r at e=16001 mx_bucket =60880 gu_r at e_bucket _c ount er = 60880, mx_r at e_bucket _c ount er = 59560 mx_ gu_negat i ve = 0 admi t t ed: pr i or i t y=0 g_r at e=0 g_bucket =60880 mx_r at e=16000 mx_ bucket =60880 mappi ng pr i 0 enqueue pr i 0 mar ker i n 0 channel set i d: 10 [ 10 ] debug: gu_r at e=0 mx_ r at e=3200001 l apsed=1614 mx_ c=16000 gu_c=0 l ct =0000e8a8 SF s f =017a4748 nx=00000000 cm=2983 sf i d=763777 dsi d=1452 domai n=3 f =00 t os_ow =0xf f 00 cnt pkt =239 byt e=35067 pkt sent =239 byt e sent =35067 over _mx dr op_pkt =0 dr op_byt e=0 enqueue 0 pkt 0 byt e mar ker _i n 0 enqueue_pr i or i t y 0 enqueue_l i mi t 16000



2-27


qos_set_ t ype: 06 docsi s versi on: 0 act i ve: pr i or i t y=1 g_r at e=0 g_bucket =60880 mx_r at e=241 mx_bucket =60880 gu_r at e_bucket _c ount er = 60880, mx_r at e_bucket _c ount er = 58380 mx_ gu_negat i ve = 0 admi t t ed: pr i or i t y=1 g_r at e=0 g_bucket =60880 mx_r at e=240 mx_bucket =60880 mappi ng pr i 0 enqueue pr i 0 mar ker i n 0 channel set i d: 10 [ 10 ] debug: gu_r at e=0 mx_ r at e=48001 l apsed=154 mx_ c=240 gu_c=0 l ct =0000e40c DS Cl assi f i er s: CL cl =00a70768 nx=00a706f 0 cm=2983 cl _i d=15 sf i d=763777 pr i =0 es=0 i pver =4 i pv4 t os=00 00 00 pr ot o=256 di p=00000000 00000000 si p=c0a8f e80 f f f f f f f e sp=0 65535 dp=0 65535 i pv6 l abel 0x0 t os 0x0 0x0 0x0, next hdr 0x100, src : : / 0, dst : : / 0 vl an i d l ow=0 hi gh=0 pr i l ow=0 hi gh=0 pkt =0 byt e=0 phs=00000000 CL cl =00a706f 0 nx=00a70678 cm=2983 cl _i d=14 sf i d=763777 pr i =0 es=0 i pver =4 i pv4 t os=00 00 00 pr ot o=17 di p=00000000 00000000 si p=3eb3013c f f f f f f f c sp=53 53 dp=0 65535 i pv6 l abel 0x0 t os 0x0 0x0 0x0, next hdr 0x100, src : : / 0, dst : : / 0 vl an i d l ow=0 hi gh=0 pr i l ow=0 hi gh=0 pkt =219 byt e=28771 phs=00000000 CL c l =00a70678 nx=00a70600 cm=2983 cl _i d=13 sf i d=763777 pr i =0 es=0 i pver =4 i pv4 t os=00 00 00 pr ot o=256 di p=00000000 00000000 si p=3eb30280 f f f f f f c0 sp=0 65535 dp=0 65535 i pv6 l abel 0x0 t os 0x0 0x0 0x0, next hdr 0x100, src : : / 0, dst : : / 0 vl an i d l ow=0 hi gh=0 pr i l ow=0 hi gh=0 pkt =0 byt e=0 phs=00000000 CL c l =00a70600 nx=00a70588 cm=2983 cl _i d=12 sf i d=763777 pr i =0 es=0 i pver =4 i pv4 t os=00 00 00 pr ot o=256 di p=00000000 00000000 si p=0a800140 f f f f f f f e sp=0 65535 dp=0 65535 i pv6 l abel 0x0 t os 0x0 0x0 0x0, next hdr 0x100, src : : / 0, dst : : / 0 vl an i d l ow=0 hi gh=0 pr i l ow=0 hi gh=0 pkt =0 byt e=0 phs=00000000 CL c l =00a70588 nx=00a70510 cm=2983 cl _i d=11 sf i d=763777 pr i =0 es=0 i pver =4 i pv4 t os=00 00 00 pr ot o=256 di p=00000000 00000000 si p=ac1f 8000 f f f f f 000 sp=0 65535 dp=0 65535 i pv6 l abel 0x0 t os 0x0 0x0 0x0, next hdr 0x100, src : : / 0, dst : : / 0 vl an i d l ow=0 hi gh=0 pr i l ow=0 hi gh=0 pkt =0 byt e=0 phs=00000000 CL c l =00a70510 nx=00a70498 cm=2983 cl _i d=10 sf i d=763777 pr i =0 es=0 i pver =4 i pv4 t os=00 00 00 pr ot o=256 di p=00000000 00000000 si p=0a800700 f f f f f f 00 sp=0 65535 dp=0 65535 i pv6 l abel 0x0 t os 0x0 0x0 0x0, next hdr 0x100, src : : / 0, dst : : / 0 vl an i d l ow=0 hi gh=0 pr i l ow=0 hi gh=0 pkt =20 byt e=5340 phs=00000000 CL c l =00a70498 nx=00000000 cm=2983 cl _i d=9 sf i d=763777 pr i =0 es=0 i pver =4 i pv4 t os=00 00 00 pr ot o=256 di p=00000000 00000000 si p=c0a8f c00 f f f f f c00 sp=0 65535 dp=0 65535 i pv6 l abel 0x0 t os 0x0 0x0 0x0, next hdr 0x100, src : : / 0, dst : : / 0 vl an i d l ow=0 hi gh=0 pr i l ow=0 hi gh=0 pkt =0 byt e=0 phs=00000000 DS L2VPN Cl assi f i ers: pr t _ ds _cl as si f i er _ l i s t ( ) : nul l poi nt e r TEK addr =025b1568 nx=00000000 cm=2983 mac=0 sai d=1452 act i ve_t i me=0 pkt =18402 al g=1 s1= 1 bb1e28c3679745d60e38cd7cdcf 7d23b


2-28


Display VLAN infor mation To show the information about the VLANs associated with the QAM on which it is registered: Step

Command

Purpose

1.

diag


Example:


2.

show qo s ds cm qam ip address Show VLAN information by QAM. 114 Where:

•


•


Example:

CASA- CMTS( di ag) # show qos ds cm qam 4 ip address 114

Example outp ut: CASA- C10000( di ag) #show qos ds cm qam 4 ip address 114 L2VPN US: t t l =0 dr op=0 DS: t t l =0 dr op=0 Not Def i ned pkt =0 i d=0 bc_s r c=0 l 2vpn_ vl an_ t bl _ pr t ( ) : l 2vpn_addr _hs_t bl _pr t ( ) : CASA- C10000( di ag) #CASA- C10000( di ag) #



2-29


Display information about m odems on a VLAN To show the information about the modems on a VLAN: Step

Command

Purpose

1.

diag


Example:


2.

show q os ds cm qam ip address Show information about modems on a 115

VLAN. Where:

•


•


Example:

CASA- CMTS( di ag) # show qos ds cm qam 4 ip address 115

Example outp ut: CASA- C10000( di ag) #show qos ds cm qam 4 ip address 115 qam_c m_vl an_mac_t r ee_pr t ( ) : qam_vl an_c m_mac_t r ee_pr t ( ) : qam_vl an_mac_t r ee_pr t ( ) : vl an_mac qam_vl an_mac_t r ee_pr t ( ) : vl an_mac_uni Addr qam_vl an_mac_t r ee_pr t ( ) : vl an_ mac_mcAddr qam_l 2vpn_cm_st at _t r ee_pr t ( ) : CASA- C10000( di ag) #


CMTS Debug_DiagRef_7_27_11_Release_6.0.3

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