Cisco - MPLS Overview

MPLS overview © 2001, Cisco Systems, Inc. All rights reserved.

Wolfgang Riedel [email protected] Systems Engineer ECSO Enterprise Manufacturing Cisco Systems GmbH

1

Agenda MPLS Overview 1. Evolution of MPLS 2. Technology Basics 3. Label Distribution in MPLS Networks 4. MPLS-Based Services (Business Opportunities) 4.1 BGP MPLS VPNs 4.2 EoMPLS (Ethernet over MPLS) 4.3 VPLS (virtual private lan services) 4.4 ATOM (any transport over MPLS) 4.5 Traffic Engineering 4.7 Fast Reroute 4.7 Carrier Supporting Carrier 4.8 Multicast VPN´s 4.9 QoS

5. Summary

© 2001, Cisco Systems, Inc. All rights reserved.

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Evolution of MPLS • From tag switching • Proposed in IETF—Later combined with other proposals from IBM (ARIS), Toshiba (CSR) Cisco Calls a BOF at IETF to Standardize Tag Switching

Time

1996

MPLS Croup Formally Chartered by IETF Cisco Ships MPLS (Tag Switching)

1997


1998

Cisco Ships Traffic Engineering Deployed MPLS TE MPLS VPN Deployed

1999

Large Scale Deployment

2000 12:24

2001 3

The Challenges Service Providers

Enterprise

Generate new services

Lower cost of WAN connectivity

Protect existing Infrastructure—ATM/FR

Migration path

Combine private data services with Internet services Move into rapid deployment

Lower cost of managing separate Data and Voice networks Campus Service Provider

Cost saving

“multiple customers” Replacement of campus wide vlan´s


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MPLS advanced services

L2 VPN

IPv6 6PE

ATOM Any Transport over MPLS IP switching

Carrier supporting Carrier

Multicast over VPN

Virtual Private Networks

DiffServ Multicast IP Traffic Fast aware Routing CoS Engineering Rerouting TE (PIM v2) v2 (DiffServ)

BGP LDP OSPF IS-IS PIM LDP RSVP

Label Forwarding Information Base (LFIB) Per-Label Forwarding, Queuing, Multicast, Restoration Mechanisms

CEF

L2 protocols (PPP, POS, ATM, FR, Enet, GRE, ...) © 2001, Cisco Systems, Inc. All rights reserved.

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MPLS Innovation & Standards

L2 VPN

IPv6 6PE


Multicast over 2547 BGP/MPLS VPNs * VPN

ATOM 2702 Requirements for Virtual Private Networks Any Transport over MPLS Traffic Engineering Over MPLS IP switching

DiffServ Multicast IP Traffic Fast aware Routing CoS Engineering Rerouting TE (PIM v2) v2 (DiffServ)

BGP LDP OSPF IS-IS PIM

LDP 3031 Multiprotocol Label Switching Label Forwarding Information Base (LFIB) RSVP Architecture * 3032 MPLS Label Stack Encoding * 2474 Definition of the Differentiated Services PerField -Label Forwarding, Queuing, Multicast, Restoration 3034 Label Switching on Frame in IP Headers * CEF 2475 An Architecture for Differentiated Mechanisms Relay Networks Services 3035 MPLS using LDP and ATM VC 2597 Assured Forwarding PHB Group * Switching * L2Expedited protocols (PPP, ATM, FR, Enet, GRE, ...) 2598 An Forwarding PHBPOS, * 3036 LDP Specification * 2697 A Single Rate Three Color Marker 3037 LDP Applicability * 2698 ©A2001, Two Rate Three Color Marker 6 Cisco Systems, Inc. All rights reserved. 12:24

MPLS Innovation-in-Progress [Draft Rosen] • An Architecture for L2VPNs * draft-rosen-ppvpn-l2vpn-00.txt

L2 VPN

IPv6 6PE

ATOM Any Transport over MPLS


Multicast over VPN BGP LDP

Virtual Private Networks

DiffServ Multicast IP Traffic Fast aware Routing CoS Engineering Rerouting TE (PIM v2) v2 (DiffServ) [Martini Drafts]

OSPF IS-IS PIM

• Transport of Layer 2 Frames Over MPLS * Label Forwarding

LDP RSVP

IP switching

Information Base (LFIB)

draft-martini-l2circuit-transmpls-06.txt

Per-LabelMethods Forwarding, Queuing, Multicast, Restoration • Encapsulation for Transport of Layer 2 Frames Mechanisms • MPLS Support of Over MPLS * Differentiated Services * draft-martini-l2circuit-encap-

CEF

L2 protocols (PPP, POS, ATM, FR, Enet, GRE, ...) draft-ietf-mpls-diff-ext-09.txt

mpls-02.txt


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5. Summary


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MPLS Concept

At Edge:

In Core:

Classify packets Label them

Forward using labels (as opposed to IP addr) Label indicates service class and destination

Edge Label Switch Router

Label Switch Router (LSR)

Label Distribution Protocol (LDP)


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MPLS Operation 1a. Existing routing protocols (e.g. OSPF, IS-IS) establish reachability to destination networks 1b. Label Distribution Protocol (LDP) establishes label to destination network mappings

2. Ingress Edge LSR receives packet, performs Layer 3 value-added services, and “labels” packets © 2001, Cisco Systems, Inc. All rights reserved.

4. Edge LSR at egress removes label and delivers packet

3. LSR switches packets using label swapping 12:24

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Encapsulations

ATM Cell Header

GFC

VPI

VCI

PTI

CLP HEC

DATA

Label

PPP Header (Packet over SONET/SDH)

PPP Header

Label Header

Layer 3 Header

LAN MAC Label Header

MAC Header

Label Header

Layer 3 Header


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Label Header for Packet Media 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1

Tag

Label = 20 bits S = Bottom of Stack, 1 bit

COS S

TTL

COS/EXP = Class of Service, 3 bits TTL = Time to Live, 8 bits

• Can be used over Ethernet, 802.3, or PPP links • Uses two new Ethertypes/PPP PIDs • Contains everything needed at forwarding time © 2001, Cisco Systems, Inc. All rights reserved.

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5. Summary


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Label Distribution Protocol • Defined in RFC 3036 and 3037 • Used to distribute labels in a MPLS network • Forwarding equivalence class How packets are mapped to LSPs (Label Switched Paths)

• Advertise labels per FEC Reach destination a.b.c.d with label x

• Neighbor discovery Basic and extended discovery © 2001, Cisco Systems, Inc. All rights reserved.

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TDP and LDP

• Tag Distribution Protocol Pre-cursor to LDP Used for Cisco tag switching

• TDP and LDP supported on the same box Per neighbor/link basis Per target basis


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RSVP and Label Distribution • Used in MPLS traffic engineering • Additions to RSVP signaling protocol • Leverage the admission control mechanism of RSVP • Label requests are sent in PATH messages and binding is done with RESV messages • EXPLICT-ROUTE object defines the path over which setup messages should be routed • Using RSVP has several advantages


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BGP-Based Label Distribution

• Used in the context of MPLS VPNs • Need multi-protocol extensions to BGP • Routers need to be BGP peers Works in both RR and non-RR environment

• Label mapping info carried as part of NLRI (Network Layer Reachability Information)


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MPLS Example: Routing Information In In Lbl Lbl

Address Address Prefix Prefix

128.89 128.89 171.69 171.69 ... ...

Out Out Out Out I’face I’face Lbl Lbl

In In Lbl Lbl

11 11 ... ...


128.89 128.89 171.69 171.69 ... ...


00 11 ... ...

In In Lbl Lbl



128.89 128.89

00

... ...

... ... 0

128.89

0

1 You can reach 128.89 and 171.69 through me

You can reach 128.89 through me 1 171.69

Routing Updates (OSPF, EIGRP, …) © 2001, Cisco Systems, Inc. All rights reserved.

You can reach 171.69 through me 18

MPLS Example: Assigning Labels In In Lbl Lbl


---

128.89 128.89 171.69 171.69 ... ...


11 11 ... ...

44 55

In In Lbl Lbl


44 55

128.89 128.89 171.69 171.69 ... ...


00 11 ... ...

99 77

In In Lbl Lbl



99

128.89 128.89

00

... ...

... ...

--

0 128.89 0

1

Use Lbl 9 for 128.89 Use Lbl 4 for 128.89 and Use Lbl 5 for 171.69

1 171.69

Label Distribution Protocol (LDP)

Use Lbl 7 for 171.69

(Downstream Allocation) © 2001, Cisco Systems, Inc. All rights reserved.

19

MPLS Example: Forwarding Packets In In Lbl Lbl


Out Out I’face I’face

Out Out TLbl TLbl

In In Lbl Lbl


---

128.89 128.89 171.69 171.69 ... ...

11 11 ... ...

44 55

44 55

128.89 128.89 171.69 171.69 ... ...


00 11 ... ...

99 77

In In Lbl Lbl



99

128.89 128.89

00

... ...

... ... 0

--

128.89

0

1

128.89.25.4 Data 9 128.89.25.4Data

128.89.25.4 Data

4 128.89.25.4 Data

1 171.69

Label Switch Forwards Based on Label © 2001, Cisco Systems, Inc. All rights reserved.

20

Label Stacking • Arrange labels in a stack • Inner labels can be used to designate services/FECs, etc. E.g. VPNs, fast re-route

• Outer label used to route/switch the MPLS packets in the network Outer Label

• Allows building services such as MPLS VPNs

TE Label

Traffic engineering and fast re-route

IGP Label

VPNs over traffic engineered core

VPN Label

Any transport over MPLS Inner Label


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IP Header

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5. Summary


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MPLS Features ...

That’s all nice but ... How can you make money with it?


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Metro Solutions – Architectural flexibility, service transparency

Storage TDM PL Residential Data/Voice/Video

GigE PL Wavelength

Enterprise VoIP Internet Access L3 VPN L2 VPN © 2001, Cisco Systems, Inc. All rights reserved.

L2 VPN Internet Access

L3 VPN 12:24

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with enough fiber you could do anything?

In what room do you want me to put it?


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MPLS IP-VPN The L3 generation of core backbone Regional Site TDM MUX

Remote Sites

LL

INTERNET

Frame-Relay ATM

MPLS IP-VPN

Branch

INTERNET Home

Central Site

IPSec Travel

PSTN ISDN

Branch

Services ADSL/Cable

Home Travel Branch


Home 12:24

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5. Summary


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MPLS L2-VPN The L3 generation of core backbone Regional Sites

Remote Sites

Regional Site

Ethernet Frame-Relay ATM

MPLS IP-VPN L2 VPN

Remote Sites

Ethernet

Central Site

Frame-Relay ATM Ethernet

Central Site © 2001, Cisco Systems, Inc. All rights reserved.

Ethernet

Regional Site

Frame-Relay ATM

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What Is a VPN? • VPN is a set of sites which are allowed to communicate with each other • VPN is defined by a set of administrative policies Policies determine both connectivity and QoS among sites Policies established by VPN customers Policies could be implemented completely by VPN service providers Using BGP/MPLS VPN mechanisms


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MPLS-based IP-VPN Architecture • Scalable VPNs VPN MembershipBased on Logical Port

• IP QoS and traffic engineering • Easy to manage and No VC provisioning required • Provides a level of Security equivalent to Frame-relay and ATM

VPN A Site 2 MPLS Network Corp A Site 1


MPLS VPN Renault

Corp B Site 2

MPLS VPN Bankcorp

• Supports the deployment of new value-added applications • Customer IP address freedom

VPN A Site 3

Corp B Site 3

Corp B Site 1 Traffic Separation at Layer 3 Each VPN Has Unique RD

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Using Labels to Build an IP VPN Cust A

A

A

---------

---------

Cust A

B B

Cust B

---------

Cust A

---------

MPLS Network

Cust B

• The network distributes labels to each VPN Only labels for other VPN members are distributed Each VPN is provisioned automatically by IP routing

• Privacy and QoS of ATM without tunnels or encryption Each network is as secure as a Frame Relay connection

• One mechanism (labels) for QoS and VPNs—no tradeoffs © 2001, Cisco Systems, Inc. All rights reserved.

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Service Provider Benefits of MPLS-Based VPNs VPN B VPN A VPN C VPN C

VPN B

Multicast Hosting Intranet

VPN A VPN A

VoIP

Extranet

VPN B VPN C

VPN A VPN B

VPN C

• Overlay VPN Pushes content outside the network Costs scale exponentially Transport dependent Groups endpoints, not groups Complex overlay with QoS, tunnels, IP


• MPLS-based VPNs Enables content hosting inside the network “Flat” cost curve Transport independent Easy grouping of users and services Enables QoS inside the VPNs

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MPLS Based IP-VPN Security

Cisco MPLS based VPNs: Equivalent to the Security of Frame Relay and ATM Security

Miercom, March 30, 2001 http://www.mier.com/reports/cisco/MPLS-VPNs.pdf


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Validating Cisco MPLS Based IP-VPN as a Secure Network Miercom independent testing confirmed Cisco MPLS VPN is secure:

9 Customers network topology is not revealed to the outside world

9 Customers can maintain own addressing plans and the freedom to use either public or private address space

9 Attackers cannot gain access into

LONDON GSR12008 100.200.200.107

POS 2/0 100.200.110.1

POS 1/0 100.200.103.1

POS 1/1 100.200.106.1

OC3 POS

GLASCOW 7206 100.200.200.106

POS 1/0 100.200.106.2

OC3 POS

OXFORD 7206 100.200.200.103

POS 1/0 100.200.112.1 OC3 POS

ATM 1/0 100.200.105.1

SER 5/0:0 100.200.104.1

Si

DOVER 7505 100.200.200.112

pvc 1/1 OS PF

T1 FR dlci 104 RIP v2

3.4.4.4

Si

ATM2/0/0 100.200.111.1

T1 FR dlci 109 RIP v2

T1 FR dlci 110 Static

Ser 0 100.200.109.2

BLUE-Glascow

T1 FR dlci 102 eBGP AS72

T1 FR dlci 101 OSPF

SER 1/0/0:0 100.200.109.1

3640 100.200.200.105

Ser 0 100.200.101.2

Ser 0/0 100.200.102.2

pvc 0/11 eBGP AS71 ATM1/0 100.200.111.2

10.4.4.4

Ser 1/0 100.200.110.2

RED-Glascow 2611 100.200.200.104

POS 2/1/0 100.200.112.2

ATM1/0 100.200.105.2

10.5.5.5

Ser 3/0 100.200.102.1 Si

SER 1/0/1:0 100.200.110.1

SER 1/0:0 100.200.104.2

POS 2/0 100.200.103.2

Ser 5/0:0 100.200.101.1

BLUE-Oxford BLUE-Dover 2611 100.200.200.110 10.3.3.3

3.5.5.5

RED-Dover 1750 100.200.200.109

10.3.3.3

10.4.4.4

1750 100.200.200.101

YELLOW-Dover 3640 100.200.200.111

YELLOW-Oxford 3640 100.200.200.102

Test Network Topology

VPNs or Service Provider’s network

Security

9 Impossible for attacker to insert “spoofed” label into a Cisco MPLS network and thus gain access to a VPN or the MPLS core © 2001, Cisco Systems, Inc. All rights reserved.

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Key Features (Cont.) • Connectivity to the Internet: VPN service providers may also provide connectivity to the Internet to its VPN customers Common infrastructure is used for both VPN and the Internet connectivity services

• Simplifies operations and management for VPN service providers: No need for VPN service providers to set up and manage a separate backbone or “virtual backbone” for each VPN


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BGP/MPLS VPN—Summary • Supports large scale VPN service • Increases value add by the VPN service provider • Decreases service provider cost of providing VPN services • Mechanisms are general enough to enable VPN service provider to support a wide range of VPN customers © 2001, Cisco Systems, Inc. All rights reserved.

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5. Summary


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Ethernet Virtual Circuit – EoMPLS Core MPLS

Access (L2) Ethernet

Access (L2) Ethernet

MPLS PE

MPLS PE

Cisco 7600

Cisco 7600

MPLS 10/100/Gigabit Ethernet

10/100/Gigabit Ethernet

Ethernet Circuit EoMPLS Tunnel in Core

Enterprise Campus A

Enterprise Campus B

Ethernet Mapped Circuit To the Enterprise this network is a pair of Pt to Pt 10/100/Gbit Bridged Ethernet Links

A © 2001, Cisco Systems, Inc. All rights reserved.

B 12:24

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5. Summary


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VPLS ( Transparent LAN Services)

• Point to Multipoint Service • Multipoint to Multipoint Service • The network will simulate a L2 switch © 2001, Cisco Systems, Inc. All rights reserved.

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5. Summary


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L2 Transport: AToM |<---------- ES:FR/Ether/ATM/PPP/HDLC ---------->| |<-- FR -->| |<------ PW:Emulated VC ------>| Ethernet ATM/PPP/HDLC

|<--FR -->| Ethernet ATM/PPP/HDLC

PSN Tunnel: MPLS Tunnel Attachment VC / L2 circuit

Site1A

PE1 CE 1A

MPLS (LSP or RSVPRSVP-TE)

Attachment VC / L2 circuit

PE2

Site1B

MPLS Core

CE 1B

Site 2B Site 2A CE 2A

Attachment VC / L2 circuit

IP Network

Attachment VC / CE 2B L2 circuit

AToM Reference Model ES Æ Emulated Services: FR/Ether/ATM/PPP/HDLC Attachment VC (AVC): FR DLCI/Ethernet VLAN/ATM PVC/PPP/HDLC PW Æ Pseudo-Wire: Emulated VC (EVC): MPLS LSP PSN Æ Packet Switched Network (Tunnel): MPLS LSP or RSVP-TE © 2001, Cisco Systems, Inc. All rights reserved.

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Any Transport over MPLS AToM FR Cust

DLCI 101

IPoFR cust Edge-LSR LSR DLCI 202 Service Provider

Example: Frame Relay over MPLS © 2001, Cisco Systems, Inc. All rights reserved.

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Transports over MPLS AToM draft-martini-l2circuit-trans-mpls-05.txt draft-martini-l2circuit-encap-mpls-01.txt

• Ethernet • 802.1Q (Ethernet VLAN) • Frame Relay PDU • ATM AAL5 PDU • ATM cells (non AAL5 mode) • Cisco HDLC • PPP


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5. Summary


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Why Traffic Engineering? • Congestion in the network due to changing traffic patterns Election news, online trading, major sports events

• Better utilization of available bandwidth Route on the non-shortest path

• Route around failed links/nodes Fast rerouting around failures, transparently to users Like SONET APS (Automatic Protection Switching)

• Build new services—Virtual leased line services VoIP toll-bypass applications, point-to-point bandwidth guarantees

• Capacity planning TE improves aggregate availability of the network


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IP Routing and the Fish R3 R4 R8

R5

R2

R1

R6

R7

IP (Mostly) Uses Destination-Based Least-Cost Routing Flows from R8 and R1 Merge at R2 and Become Indistinguishable From R2, Traffic to R3, R4, R5 Use Upper Route Alternate Path Under-Utilized © 2001, Cisco Systems, Inc. All rights reserved.

50

Solution: Toll Bypass with Voice/Data Converged Network

PBX with Circuit Emulation Interface

Class 5 legacy switches

PSTN – Traditional TDM Network

CE

CE Fast Reroute in the core

Enterprise LAN

Enterprise LAN

Toll Bypass

PE

Solution Requirements

⇒

QoS on CE Router

+

QoS on PE Router


GB Tunnel

+

Mapping Traffic to Tunnels

PE

+

QoS on Core Routers

=

DiffServ-Aware Traffic Engineering 12:24

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DiffServ Aware TE Virtual Leased Line PSTN— Traditional TDM Network

Traditional Central Telephony Office

Class 5 Legacy switches Central Office

Traditional Telephony

MPLS Network Voice Trunking

VoIP Gateway

VoIP Gateway

Toll Bypass GB Tunnel

PE

PE

PE

PE Regular TE Tunnel

CE Enterprise LAN

PE

CE Enterprise LAN

PE GB-TE Tunnel

VPN Service

Internet Service

Regular TE Tunnel Physical Link

Enterprise LAN

Internet Access Router


Internet Access Router

Enterprise LAN 12:24

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5. Summary


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What Is Fast Reroute? Definition

Fast ReRoute (FRR) is a link or node protection feature, allowing for temporary bypassing of the failed link or node over a preestablished tunnel, while the head-end is rerouting the failed LSP


56

What is Fast Re-route? (cont.) Head-end Router


57

Link Resilience (Next-hop Backup Tunnel)


58

Node Resilience (Next-next Hop Backup Tunnel)


59


5. Summary


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Carrier Supporting Carrier & Inter-Provider Access Carrier Supporting Carrier • Hierarchical relationship • Opportunity: Offer backbone services to peer or smaller carriers

Backbone Carrier

Inter-Provider Access • Peer relationship • Opportunity: Provide carrier services on behalf of other carriers

Carrier A

Customer Carriers


Carrier B

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Inter-AS VPN Using VRF-to-VRF Design (Cont.) VRF-to-VRF Connections Between AS Border Routers

ASBRs collect the client VPN routes through configured VRFs. Adjacent ASBR is seen as a CE through separate logical interface. Dedicated IPv4 routing session per VRF – usually eBGP. © 2001, Cisco Systems, Inc. All rights reserved.

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Inter-AS VPN Using VRF-to-VRF Design (Cont.) VPN Routing Distribution Between MPLS VPN Backbones

•VPN routing information distributed across inter-AS network © 2001, Cisco Systems, Inc. All rights reserved.

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Inter-AS VPN Using VRF-to-VRF Design (Cont.) Data Flow – Label Switching and IP Forwarding

Data flow: Label switching within AS and IP forwarding on InterAS link © 2001, Cisco Systems, Inc. All rights reserved.

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MPLS VPN Enabled ISP Connected Across Standard Carrier (Cont.) Customer Carrier is Not Running MPLS (Cont.)


65

MPLS VPN Enabled ISP Connected Across Standard Carrier (Cont.) Customer Carrier is Running MPLS (Cont.)

IBGP


66


5. Summary


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Multicast VPN (MVPN) Receiver 4

Join high bandwidth source

• Customer CE devices joins the MPLS Core through provider’s PE devices

CE A

CE

CE

Receiver 1

B1

PE

A

San San Francisco Francisco

E

PE MPLS VPN Core

B

PE Default MDT

E

F

Data MDT

PE

For High Bandwidth traffic only.

D C

CE

PE

D

Dallas Dallas

C

Receiver 3 High bandwidth multicast source

• A Default MDT is created connecting all the PE’s within a VPN for signaling and low bandwidth flows CE • A High-bandwidth source

For low Bandwidth & control traffic only. Los Los Angeles Angeles

CE

New New York York

B2

Join high bandwidth source


CE

for that customer starts sending traffic • Interested receivers 1 & 2 join that High Bandwidth source • Data-MDT is formed for this High-Bandwidth source

Receiver 2 12:24

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5. Summary


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Backbone and Edge QoS Design Scope

• • • •

Loss rate Latency Jitter Throughput

• Loss rate • Latency • Jitter


Availability • Subsecond Interior Gateway Protocol (IGP) convergence • Sub-100 ms Fast Reroute (FRR) • High availability12:24

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Backbone and Edge QoS Design (Cont.) QoS Transparency

• An MPLS packet carries two (or more) DiffServ markings. • Three modes of interaction are defined between markings: Uniform, Pipe, and Short Pipe. • Modes are only relevant when a label is popped/pushed. © 2001, Cisco Systems, Inc. All rights reserved.

71

Backbone and Edge QoS Design (Cont.) QoS Transparency: Uniform Mode


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Backbone and Edge QoS Design (Cont.) QoS Transparency: Pipe Mode


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Backbone and Edge QoS Design (Cont.) QoS Transparency: Short Pipe Mode


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5. Summary


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MPLS: The Key Technology for IP Service Delivery IP ATM Services Services

• IP+ATM: MPLS brings IP and ATM together IP PNNI

MPLS

Eliminates IP “over” ATM overhead and complexity One network for Internet, Business IP VPNs, and transport

IP+ATM Switch

• Network-based VPNs with MPLS: a foundation for value-added service delivery Flexible user and service grouping (biz-to-biz) Flexibility of IP and the QoS and privacy of ATM Enables application and content hosting inside each VPN Transport independent Low provisioning costs enable affordable managed services © 2001, Cisco Systems, Inc. All rights reserved.

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MPLS: The Key Technology for IP Service Delivery

• MPLS traffic engineering Provides routing on diverse paths to avoid congestion Better utilization of the network Better availability using protection solution (FRR)

• Guaranteed bandwidth services Combine MPLS traffic engineering and QoS Deliver point-to-point bandwidth guaranteed pipes Leverage the capability of traffic engineering Build solution like virtual leased line and toll trunking


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MPLS: The Key Technology for IP Service Delivery IP Optical Services Services

• IP+Optical: MPLS brings IP and Optical together Eliminates IP “over” optical complexity

IP O-UNI

MPLS

IP+Optical Switch

Frame Relay

Frame Relay

Uses MPLS as a control plane for setting up lightpaths (wavelengths) One control plane for Internet (GMPLS), business IP VPNs, and Optical transport

• Any transport over MPLS Transport ATM, FR, Ethernet, PPP over MPLS Provide services to existing installed base Protect Investment in the installed gear Leverage capabilities of the packet core

ATM

Combine with other packet-based services such as MPLS VPNs © 2001, Cisco Systems, Inc. All rights reserved.

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Literature

MPLS and VPN Architectures Ivan Pepelnjak Jim Guichard ISBN 1-58705-002-1


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MPLS Features ...

That’s all nice but ... How does this help me for my datacenter ?


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Customer Strategies Mapping Customer Problems to Cisco Solutions

Strategies • Server, Application and DC consolidation • Migration to Web Apps • Comprehensive Security • Services Model • Storage Consolidation

Data Center Solution Set

Data Center Networking Distributed Data Centers Data Center Data Security Application/Server Optimization Highly Availability Infrastructure

• Business Continuance & Disaster Recovery

Storage Network Inter-Data Center Connectivity


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Data Center Networking Internet ISP A

Primary Data Center

ISP B

Distributed Data Center Internet SP A SP B

IP Network Intranet Campus Core

IP Network

External protection Internal protection

Data Center Infrastructure

Server & Application Optimization


Server farm protection

Data Center Security

Primary Data Center

Distributed Data Center

Storage Networking

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Distributed Data Centers

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Cisco - MPLS Overview

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