cisco public carrier ethernet design€¦ · billing content farm vod tv sip content farm vod tv...

©2007 Cisco Systems, Inc. All rights reserved.

Presentation_ID

1Cisco Public

Carrier Ethernet Design

Mar 2007

Josef Ungerm

an, CCIE #6167

Consulting Systems Engineer

Cisco, Central & Eastern Europe


Cisco Public

Presentation_ID

2

Agenda

Carrier Ethernet and IP NGN Architectures

•what network architecture is the best for me?

•where should I put my services edge?

Carrier Ethernet Hardware Usage

•ES20 –what does it bring to me?

•Where to put it in my network?

L2 Access Redundancy

•How to connect my access domain to 7600?

•Rings, stars, REP, MST, Flexlink –I’m lost.


Cisco Public

Presentation_ID

3

Agenda











Cisco Public

Presentation_ID

4

Access

Services

Edge

BRAS

PE

Core Network

MPLS /IP

Identity

Address

Mgmt

Portal

Subscriber

Database

Monitoring

Policy

Definition

Billing

FR

Mobile

TDM

ISDN

Business

Corporate

Residential STB

Policy Control Plane (per subscriber)

Aggregation

Where is it going from: Aggregation 2000

ATM

SDH


Cisco Public

Presentation_ID

5

Access

Services

Edge

BRAS

PE

Core Network

MPLS /IP

Identity

Address

Mgmt

Portal

Subscriber

Database

Monitoring

Policy

Definition

Billing

DSL

Mobile

ETTH

Business

Corporate

Residential STB


Where is it going from: Aggregation 2005

Aggregation

Untagged

Single tagged

Double tagged

802.1q

802.1ad

etc

Metro Ethernet


Cisco Public

Presentation_ID

6

What is Carrier Ethernet?

Makin

g L

AN

Eth

ern

et

su

itab

le f

or

rep

lacin

g A

TM

/SD

H

�Scalability

–Going beyond 4K VLAN’sand keep the flexibility

�Reliability

–Going beyond Spanning Tree (50ms/FRR, fault detection, 1+1)

�Dynamic signaling

–DLDP-set pseudowires(PVC vs. SVC)

�Service M

anagement

–OAM to Provision, Monitor, Diagnose and Resolve Issues

�Standardized Services

–Standard EVC, E-Line, E-LAN (MEF)

–de-facto standard Residential Quad-Play (incl. IPTV, Mobile)

–de-facto standard Business IP VPN (inc. H-QoS)


Cisco Public

Presentation_ID

7

Services

Edge

BRAS

PE

Core Network

MPLS /IP

Identity

Address

Mgmt

Subscriber

Database

Monitoring

Policy

Definition

Billing


Carrier Ethernet –Centralized Design

Access

Portal

DSL

Residential STB

Mobile

ETTx

PON

MSPP

Cable

Business

Corporate

Residential STB

Aggregation

U-PE

N-PE

N-PE

Carrier Ethernet + IP/MPLS


Cisco Public

Presentation_ID

8

Services

Edge

BRAS

PE

Core Network

MPLS /IP

Identity

Address

Mgmt

Subscriber

Database

Monitoring

Policy

Definition

Billing

Content Farm

VOD

TV

SIP

Content Farm

VOD

TV

SIP



Access

Portal

DSL

Residential STB

Mobile

ETTx

PON

MSPP

Cable

Business

Corporate

Residential STB

Aggregation

U-PE

N-PE

N-PE



Cisco Public

Presentation_ID

9

Residential Services Architecture



Access Node UNI and connectivity models:

•Non Trunk UNI, N:1 VLAN

•Trunk (Multi VC) UNI, N:1 Service VLAN

•Trunk (Multi VC) UNI, 1:1 Internet Access VLAN

These models are the base line in TR-101 and

present in existing Access Nodes implementations

La

rge

Sca

le

Aggregation

Inte

llig

en

t

Edge

Mu

ltis

erv

ice

Core

Eff

icie

nt

Access

U-PE Node

BNG

PPP, IP, MPLS

MPLS

MPLS / IP

DSL, WiMAX, Ethernet

IP Model

VoD, IPTV, VoIP

N:1, 1:1 VLAN models

EoMPLS Pseudowire

HSI, VoIP

Access Node

N:1 VLAN model

BNG

N-PE Node

PIM and IGP control plane

IP unicast/multicast data plane

EoMPLS PW

HSI IP service subnet

3Play IP service subnet

Single PW per Aggregation Node

Ethernet UNI

MPLS/IP Model

VoD, IPTV, VoIP

N:1 VLAN model

MPLS/IP data plane

VoD control plane: LDP, RSVP-TE

TV control plane: PIM, 2ndIGP

3Play IP service subnet

Ethernet UNI

Ethernet UNI

MPLS NNI

L2 Aggregation

L3 Aggregation


Cisco Public

Presentation_ID

10

Business Services Architecture



Ethernet UNI

MSE implements service

network forwarding and

access SLA enforcement




Aggregation Network implements a transport

function based on EoMPLS pseudowires

La

rge

Sca

leAggregation

Inte

llig

en

tEdge

Mu

ltis

erv

ice

Core

Eff

icie

nt

Access

IP, MPLS

MPLS

MPLS / IP


Business

E-LINE

Business

E-LAN

EoMPLS PW

EoMPLS Pseudowire

VPLS

Business

L3 VPN

EoMPLS PW

MPLS-VPN

U-PE Node

MSE

Access Node

MSE

N-PE Node

Ethernet

QinQ

Ethernet

QinQ

Ethernet

QinQ

Ethernet UNI

Ethernet UNI

Port, 1Q, QInQ

Port, 1Q, QinQ

Port, 1Q, QinQ





Cisco Public

Presentation_ID

11

Services

Edge

BRAS

PE

Core Network

MPLS /IP

Identity

Address

Mgmt

Subscriber

Database

Monitoring

Policy

Definition

Billing

Content Farm

VOD

TV

SIP

Content Farm

VOD

TV

SIP



Access

Portal

DSL

Residential STB

Mobile

ETTx

PON

MSPP

Cable

Business

Corporate

Residential STB

Aggregation

U-PE

N-PE

N-PE



Cisco Public

Presentation_ID

12

Services

Edge

BRAS

PE

Core Network

MPLS /IP

Identity

Address

Mgmt

Subscriber

Database

Monitoring

Policy

Definition

Billing

Content Farm

VOD

TV

SIP

Content Farm

VOD

TV

SIP


Carrier Ethernet –MPLS NNI

Access

Portal

DSL

Residential STB

Mobile

ETTx

PON

MSPP

Cable

Business

Corporate

Residential STB

MPLS

Aggregation

U-PE

N-PE

N-PE



Cisco Public

Presentation_ID

13

Centralized

Services

Edge

BRAS

PE

Core Network

MPLS /IP

Identity

Address

Mgmt

Subscriber

Database

Monitoring

Policy

Definition

Billing

Content Farm

VOD

TV

SIP

Content Farm

VOD

TV

SIP


Carrier Ethernet –New Service Edges

Access

Portal

DSL

Residential STB

Mobile

ETTx

PON

MSPP

Cable

Business

Corporate

Residential STB

MPLS

Aggregation

N-PE

N-PE

Distributed

Services

Edge

PE


Q: Which Services Edge to put where??


Cisco Public

Presentation_ID

14

La

rge

Sca

leAggregation

Inte

llig

en

tEdge

Mu

ltis

erv

ice

Core

Eff

icie

nt

Access

IP, MPLS

MPLS

MPLS / IP


Business

E-LINE

Business

E-LAN

H-VPLS

Business

L3 VPN

MPLS-VPN

U-PE Node

Access Node

N-PE Node

EoMPLS

MPLS NNI

Inter AS, PW switch

Port, 1q, QinQ

Port, 1Q, QinQ

Port, 1Q, QInQ

Aggregation Network Service Edge

Business Ethernet Services Architecture

Aggregation Network Service Edge

Business Ethernet Services Architecture

Implements service



MPLS NNI


Cisco Public

Presentation_ID

15

Flexible Service Edge Placement

acco

rdin

g t

o p

en

etr

ati

on

, co

mp

lexit

y, g

row

th…

ACCESS

AB

CD

MSE

Multiservice Edge

VLAN

EoMPLS Pseudowire

Full BGP

VLAN

VLAN

EoMPLS Pseudowire

E-LAN (H-VPLS)

VLAN

VLAN

7600 U-PE

Aggregation Node

7600 N-PE

Distribution Node

VLAN

Internet VRF

VLAN

IP VPN

IPTV VPN

DSLAM

CRS-1 P

Core Node

PoP

CORE

MAN

VLAN

E-Line

PROVISIONING POINTS


Cisco Public

Presentation_ID

16

Centralized

Services

Edge

BRAS

PE

Core Network

MPLS /IP

Identity

Address

Mgmt

Subscriber

Database

Monitoring

Policy

Definition

Billing

Content Farm

VOD

TV

SIP

Content Farm

VOD

TV

SIP


Carrier Ethernet –New Service Edges

Access

Portal

DSL

Residential STB

Mobile

ETTx

PON

MSPP

Cable

Business

Corporate

Residential STB

MPLS

Aggregation

N-PE

N-PE

Distributed

Services

Edge

PE


Q: Which Services Edge to put where??


Cisco Public

Presentation_ID

17

Core Network

MPLS /IP

Identity

Address

Mgmt

Subscriber

Database

Monitoring

Policy

Definition

Billing

Content Farm

VOD

TV

SIP

Content Farm

VOD

TV

SIP


Carrier Ethernet –Distributed Design

Access

Portal

DSL

Residential STB

Mobile

ETTx

PON

MSPP

Cable

Business

Corporate

Residential STB

Aggregation

N-PE

N-PE

Distributed

Services

Edge

PE


The old Centralized Edge does not have to be in every PoP!


Cisco Public

Presentation_ID

18

Services

Edge

Identity

Address

Mgmt

Subscriber

Database

Monitoring

Policy

Definition

Billing

Content Farm

VOD

TV

SIP

Content Farm

VOD

TV

SIP


Carrier Ethernet –Integrated Design

Access

Portal

DSL

Residential STB

Mobile

ETTx

PON

MSPP

Cable

Business

Corporate

Residential STB

Aggregation

CN

CN

Distributed

Services

Edge

PE


Core Network

MPLS /IP

IPoDWDM


Cisco Public

Presentation_ID

19

Services

Edge

Identity

Address

Mgmt

Subscriber

Database

Monitoring

Policy

Definition

Billing

Content Farm

VOD

TV

SIP

Content Farm

VOD

TV

SIP


Programmable Carrier Ethernet vision

Access

Portal

DSL

Residential STB

Mobile

ETTx

PON

MSPP

Cable

Business

Corporate

Residential STB

Aggregation

CN

CN


Core Network

MPLS /IP

IEN -

Integrated

Edge Node

BRAS,

ISG, DPI

IPoDWDM


Cisco Public

Presentation_ID

20

Agenda











Cisco Public

Presentation_ID

21

Section

Section

Carrier Ethernet and Cisco 7600


Cisco Public

Presentation_ID

22

Ethernet/SONET/SDH

Ethernet/ DWDM

IP/MPLSand Ethernet

Cisco Carrier Ethernet Portfolio

Cisco Carrier Ethernet Solutions Deliver:

�Architectural Flexibility –Network Convergence

�Service Richness –Complete Solutions

�MEF9 and MEF 14 Certified

�Portfolio Breadth –End to End Manageability (Ethernet OAM)

CRS-1

ONS

153xx

ONS

15454

ONS

15600

Catalyst

6500

ME 3400

Catalyst

4500

12000 / XR 12000

ME 3750

Cisco

72xx/73xx

ME 4924

ME 6524

ASR 1000

Cisco

10000

Cisco

7600


Cisco Public

Presentation_ID

23

What does it bring?

•Up to 32k EVCsper system (16k per card)

•Up to 32K Pseudowires(16k per card)

•Multipoint VPLS & H-VPLS

•Ethernet and MPLS OAM interworking

•Flexible VLAN translation

•Hierarchical QOS (16K, resp. 32K queues)

Pricing?

•X6724 LAN card = $625 per GE port (GPL)

basic L2/L3 features set

•ES20-GE card = $2000 per GE port (GPL)

for Triple-Play and L2 VPN services

•ES20-ADVIP-LIC = $4000 per GE port (GPL)

in-service upgrade to L3 VPN services

ES20 –2-port 10GE

ES20 –20-port GE

Hardware: 7600 Ethernet Service Modules

SIP-400 –4x SPA


Cisco Public

Presentation_ID

24

•The Flexible Ethernet UNI

defines a unique, virtual

L2 or L3 service instance

per customer

•A service instance can be a

MAC address, VLAN, Q-in-Q

VLAN, L2 VPLS pseudowire,

IP address, or L3 MPLS VPN

•For each service instance,

Flexible UNI offers:

•Unique ID with service

separation via VLAN or MAC

translation

•H-QoS with shaping per VC

•IP+MAC spoofing prevention

•Ethernet and MPLS OAM

•Each service instance can in

turn be flexibly mapped to:

•L2: Pseudowires, H-VPLS

•L3: IP, IPv6, MPLS VPN

L3 IP, IPv6

L3 MPLS VPN

EoMPLS, H-VPLS

L2, Point to Point

L2, Bridged

L2/L3 integration

H-QoS

per

EFP

Flexible

MAC / VLAN

Translation

1:1

2:2

1:2

Security

OAM

SBC

Video

OSS / Policy Management

Software: IOS EVC infrastructure


Cisco Public

Presentation_ID

25

Section

Section

ES card placement

L2 designs


Cisco Public

Presentation_ID

26

N-PE U-PE

P / PE

LAN Card

ES20 or SIP

Base Design:Carrier Ethernet Network


Cisco Public

Presentation_ID

27

Base Design 1:RSTP-based Aggregation

VLAN

101VLAN

101

N-PE U-PE

switchport

switchport

VLAN

INSTANCE

VLAN

INSTANCE

BRAS / PE


Cisco Public

Presentation_ID

28


VLAN

101VLAN

101

N-PE U-PE

switchport

switchport

VLAN

INSTANCE

VLAN

INSTANCE

B

BRAS / PE

L


Cisco Public

Presentation_ID

29


VLAN

101

VLAN

102

VLAN

101

VLAN

102

N-PE Scalabitity

•# of VLANs:

4K

•# of MACs:

unlimited

U-PE Scalability

•# of VLANs:

4K

•# of MACs:

32K/56K/80K

Other Limits

•PVST VLANs per card: 1800

•MST VLANs per card: 6000

N-PE U-PE

switchport

switchport

VLAN

INSTANCE

VLAN

INSTANCE

BB

BRAS / PE

Advantages

•simple, inexpensive

•active-active

•learning can be turned off

(manual or auto/cGVRP)

Can be any Cisco switch

•Catalyst 6500, 4500, ME…

LL


Cisco Public

Presentation_ID

30

Base Design 2:MPLS-based Aggregation

VLAN

100

VLAN

100

VLAN

101

VLAN

102

N-PE Scalabitity

•# of VLANs:

4K

•# of MACs:

unlimited

U-PE Scalability

•# of VLANs:

4K

•# of MACs:

unlimited

Other Limits

•4K pseudowiresper N-PE

N-PE U-PE

subinterface

subinterface

eompls

pseudo

wire backup

pseudowire

Advantages

•no STP limits

•dynamic PW re-routing

•MPLS TE, MPLS FRR

•active/backup PW

VLAN

INSTANCE

VLAN

INSTANCE

BRAS / PE


Cisco Public

Presentation_ID

31

Puzzle #1:Edge-facing

VLAN

100

VLAN

102

VLAN

101

VLAN

101

N-PE Scalabitity

•# of VLANs:

32K

•# of MACs:

unlimited

U-PE Scalability

•# of VLANs:

32K

•# of MACs:

unlimited

N-PE U-PE

EVC service

subinterface

eompls

pseudo

wire backup

pseudowire

Advantages at N-PE

•PW Scalability (no global

VLAN instance is consumed)

•EVC and Flexible QinQ

•Per-Port VLAN significance

•Flexible VLAN translations

•Flexible QinQ CoS mapping

ES20 Card

VLAN

INSTANCE

BRAS / PE


Cisco Public

Presentation_ID

32

Puzzle #2:Customer-facing

VLAN

100

VLAN

100

VLAN

101

VLAN

102

N-PE Scalabitity

•# of VLANs:

32K

•# of MACs:

unlimited

U-PE Scalability

•# of VLANs:

32K

•# of MACs:

unlimited

N-PE U-PE

subinterface

EVC service

eompls

pseudo

wire backup

pseudowire

Advantages at U-PE

•PW Scalability

•EVC and Flexible QinQ

•Per-port VLAN significance

•Flexible VLAN translations

•Flexible QinQ CoS mapping

•HQoSfor L2 VPN Customers

•2 priority Queues (voice/video)

•ELMI for L2 VPN Customers

ES20 Card

or SIP-400

VLAN

INSTANCE

BRAS / PE

Services Edge:

•E-Line, E-LAN


Cisco Public

Presentation_ID

33

Puzzle #3:U-PE uplink

VLAN

100

VLAN

100

VLAN

101

VLAN

102

N-PE Scalabitity

•# of VLANs:

32K

•# of MACs:

unlimited

U-PE Scalability

•# of VLANs:

32K

•# of MACs:

80K/unltd.

Other Limits

•4K VPLS instances

N-PE U-PE

subinterface

switchport

eompls

pseudo

wire

ES20 Card

or SIP-400

Advantages at U-PE

•Local Switching with Learning

•Concurrent STP and MPLS

•Active-Active Pseudowires

VPLS

INSTANCE

VLAN

INSTANCE

BRAS / PE

LL


Cisco Public

Presentation_ID

34

Puzzle #4:N-PE downlink

VLAN

100

VLAN

101

N-PE Scalabitity

•# of VLANs:

4K

•# of MACs:

80K

U-PE Scalability

•# of VLANs:

32K

•# of MACs:

unlimited

N-PE U-PE

subinterface

eompls

pseudo

wire backup

pseudowire

Services Edge:

•popular E-LAN services

(N-PE is just a H-VPLS hub)

ES20 Card

VLAN

INSTANCE

VPLS

INSTANCE

VLAN

100


Cisco Public

Presentation_ID

35

CORE

Puzzle #4a:remote H-VPLS hub

VLAN

100

VLAN

101

N-PE Scalabitity

•# of VLANs:

unlimited

•# of MACs:

unlimited

U-PE Scalability

•# of VLANs:

32K

•# of MACs:

unlimited

P/N-PE

U-PE

subinterface

eompls

pseudo

wire backup

pseudowire

VLAN

INSTANCE

VLAN

100

Services Edge:

•sporadic E-LAN services

(N-PE is just a P)


Cisco Public

Presentation_ID

36

Section

Section

ES card placement

L3 designs


Cisco Public

Presentation_ID

37

N-PE U-PE

P / PE

switchport

switchport

LAN Card

ES20 or SIP

Base Design:Carrier Ethernet


Cisco Public

Presentation_ID

38

N-PE U-PE

P / PE

switchport

or subinterface

ROUTING

INSTANCE

-ISIS/OSPF

-PIM SSM

switchport

or subinterface

Base Design:L3 Aggregation for IPTV

Numbered SVI

-IP/DHCP term

ination

-Subnets per VLAN

-VRF set

Unnumbered SVI

-IP/DHCP term

ination

-/32 route for each host

-VRF set

U-PE Scalabitity

•# of L3 interfaces:

4K

•# of IP hosts:

128K


Cisco Public

Presentation_ID

39

LL

2. VQE Technology

Video Quality of Experience

•Look-aside stream RTP monitoring

•Last-mile error correction

•Fast channel zapping

1. RSVP CAC

Video Call Admission Control

•no need for policy server layer

•scalability, topology independence

•fast re-convergence

RSVP Proxy

VQE-S

IP STB

with VQE-C

1. Play

2. PATH

3. RESV

RTSP

Base Design:IPTV intelligence


Cisco Public

Presentation_ID

40

N-PE U-PE

P

EVC svc. or

access subint.

ROUTING

INSTANCE

-MPLS VPN

switchport

or subinterface

Puzzle #1:Customer-facing

ES20

or SIP-400

U-PE Scalabitity


4K

•# of IP hosts:

128K

Advantages at U-PE

•Per-VLAN HQoS

•IP over QinQ (tag push/pop)

•QinQ inner/outer CoS setting

•Scalable E-Line/E-LAN

•SIP400 is better for L3 VPN

Services Edge:

•Business VPNs

•also required for IPTV with QinQ!


Cisco Public

Presentation_ID

41

N-PE U-PE

P

EVC svc. or

access subint.

ROUTING

INSTANCE

-MPLS VPN

switchport

or subinterface

Puzzle #2:Distributed BRAS and ISG

SIP-400

U-PE Scalabitity


32K

•# of PPPoE or IP sessions:

32K

(per SIP: 8K VLANs, 8K sessions)

Advantages at U-PE

•AAA

•PPPoE sessions

•IP/DHCP sessions

•Change of Authorization

•L4 redirect

•SCE integration bus

Services Edge:

•integrated residential BRAS

•integrated AAA or SCE


Cisco Public

Presentation_ID

42

Agenda











Cisco Public

Presentation_ID

43

CORE

L2 Access

Access –no Redundancy

Switch, DSLAM

PE

L2 Domain

L2/L3

Services

Edge


Cisco Public

Presentation_ID

44

CORE

L2 Access

Access Redundancy

Switch, DSLAM

PE

L2/L3

Services

Edge

Boundary Failures

L2 Domain


Cisco Public

Presentation_ID

45

Section

Section

L3 Service Redundancy


Cisco Public

Presentation_ID

46

CORE

L2 Access

routing

Redundancy Design –L3 services edge

CPE dual-homing/backup

•business VPN, Internet

•simple, well-known by customers

•routing protocol (BGP)

•reliable static route (BFD)

CPE

SW

PE

P

NO PROBLEM ;)


Cisco Public

Presentation_ID

47

CORE

L2 Access


Dual-homed Switch or DSLAM

•IPTV STB, PPPoE/DHCP clients

•loop-free L3 term

ination

•no need for Flexlink, REP, MST

•only 1 port per L3 interface!

HSRP

DSLAM

SW

PE

P

NO PROBLEM ;)


Cisco Public

Presentation_ID

48

CORE

L2 Access


BRAS

DSLAM

SW

PE

P




ination



•can be extended using PW

NO PROBLEM ;)


Cisco Public

Presentation_ID

49

CORE

L2 Access





ination



•can be extended using PW

HSRP

PE

P

NO PROBLEM ;)


Cisco Public

Presentation_ID

50

CORE

B

L2 Access

HSRP


Dual-homed L2 Domain

•still the same situation


ination

MST, REP

PE

P

NO PROBLEM ;)


Cisco Public

Presentation_ID

51

CORE

L2 Access


HSRP

PE

P




ination

NO PROBLEM ;)


Cisco Public

Presentation_ID

52

CORE

L2 Access

HSRP


Two-side, dual-homed L2 Domain



ination

PE

standby

for RED

standby

for BLUE

NO PROBLEM ;)


Cisco Public

Presentation_ID

53

CORE

B

L2 Access

HSRP


Two-side, dual-homed L2 Domain



ination

MST, REP

PE

NO PROBLEM ;)


Cisco Public

Presentation_ID

54

CORE

B

L2 Access

switchport

HSRP


L2 link is moved between PE’s



ination

MST, REP

PE

NO PROBLEM ;)


Cisco Public

Presentation_ID

55

CORE

B

L2 Access

TUNNELING!

•MST, REP etc. get confused

•no TC propagation into the VPLS!!!

PW or QinQ


Tunneled L2 Domain

•MPLS PW or Switched QinQ


ination

MST, REP

PE

HSRP


Cisco Public

Presentation_ID

56

CORE

B

L2 Access

!!


Do not remove PE-PE direct link

•it is needed

MST, REP

PE

HSRP

The PE-PE link is removed.


Cisco Public

Presentation_ID

57

CORE

X

L2 Access

!!



•it is needed

•in some cases it carries data

MST, REP

PE

HSRP



Cisco Public

Presentation_ID

58

CORE

X

L2 Access

!!



•it is needed


•if you can’t have it, plan ahead!

MST, REP

PE

HSRP



Cisco Public

Presentation_ID

59

CORE

X

L2 Access



•it is needed


•if you can’t have it, plan ahead!

MST, REP

PE

HSRP


Cisco Public

Presentation_ID

60

Section

Section

L2 Service Redundancy


Cisco Public

Presentation_ID

61

CORE

L2 Access


Dual-homed CPE

•simple, well-known by customers

•Routed CPE runs routing

•Switched CPE runs STP

CPE

SW

PE

P

NO PROBLEM ;)


Cisco Public

Presentation_ID

62

CORE

BL2 Access


Dual-homed Switch

•E-Line/LAN with PE redundancy

for dumb L2 endpoints

•Flexlink (if direct fibers exist)

SW

PE

PDSLAM

H-VPLS hub

Flexlink

NO PROBLEM ;)


Cisco Public

Presentation_ID

63

CORE

B

L2 Access

B

Flexlink




•Flexlink (if direct fibers exist)

MST, REP

PE

H-VPLS hub

NO PROBLEM ;)


Cisco Public

Presentation_ID

64

CORE

B

L2 Access

BTunneled MST, REP!

Possible Solutions:

•EEM workarounds (now)

•EVC with MST (summer)

•EVC with REP (winter)

•QinQ with MST/REP (evaluated)

Future development (patent pending):

•L2GP (access-side blocking)

•V-PE Group (agg-side blocking)

•both need MVRP for TCO propagation


Two-side, dual-homed L2 domain

•new loop occurs!

•L2 domain is still self-resilient

•MST or REP is required

MST, REP

MST

PE

H-VPLS hub


Cisco Public

Presentation_ID

65

CORE

B

L2 Access

Tunneled MST, REP, etc., also no TC,

now for the whole L2 domain!

Possible Solutions:

•EEM workarounds (now)

•EVC with MST (summer)

•EVC with REP (winter)

•QinQ with MST/REP (evaluated)

Future development (patent pending):

•L2GP (access-side blocking)

•V-PE Group (agg-side blocking)

•both need MVRP for TCO propagation


L2 link is moved between PE’s

•L2 domain self-resiliency can be

compromised by tunneling!

•EEM scripts may help

•Direct PE-PE link highly desirable!

MST, REP

PE


Cisco Public

Presentation_ID

66

Section

Section

Conclusion


Cisco Public

Presentation_ID

67

Conclusion

Carrier Ethernet Technology

•Bringing Ethernet at ATM level from operational point of view

•Uses MPLS, uses both L2 and L3 elements

•Cisco 7600 + IOS 12.2SR = the reference platform

2. Do I need ES cards?

•yes, if you know what to do with them

•let’s optimize the design for your network

1. Which architecture?

•plan your service edges

•jump on the architecture evolution train

3. Is L2 access redundancy going to blow off my head?

•no, focus on the most important services

•avoid complex L2 topologies


Cisco Public

Presentation_ID

68

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