Technologies, Architectures and Deployment Modelsd2zmdbbm9feqrf.cloudfront.net/2011/mex/pdf/BRKSPG-2111.pdf · Cisco Confidential 3 NGN Carrier Ethernet System: Overview. Source:

Nelson Figueroa

The NGN Carrier Ethernet

System:

Technologies, Architectures and

Deployment Models

Technical Leader

Agenda

• Next Generation Carrier Ethernet (NGN CE) System : Overview

• The context of Broadband Forum’s TR-101

• NGN CE Design:

Architecture Description

Service Delivery Models

High Availability

Quality of Service

Security Considerations

• Summary

• Questions and Answers

© 2011 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 3

NGN Carrier Ethernet System:

Overview

Source: Cisco Visual Networking Index—Forecast, 2009-2014

Global IP Traffic 2009 2014

Video & Multimedia

Mobile Internet

Exponential Growth + Evolving Traffic Mix = Complexity

IT Services via Cloud

300+% Market Growth

39X Traffic Increase

90% Consumer Traffic

Dominance of Video, Mobile, and Cloud Fundamentally Different Traffic Mix

IP traffic will increase 4X

(767 exabytes by 2014)

How will NGN CE enable the transition

Optical Layer

L1/L2/L3 Services L2 Services

IPoDWDM

L2 Services

Transport Centric Model

Packet Optical Transport Network

Service Centric Model +

Flexible Service Edge

CE

Architecture

Optical Layer

L1/L2/L3 Services

IPoDWDM

Physical

L3 Services

ATM

Yesterday

SONET/SDH

http://www.reshalls.org/borah/cd-rom/mv_animal_large.wmv






NGN Carrier Ethernet System

• IP/MPLS-Based Transport/ Per Service

• Flexible Service Mapping

• Subscriber Awareness Where Needed

• Video Optimisations A

rch

itectu

ral F

ram

ew

ork

an

d F

un

cti

on

ali

ty

IP N

GN

Access Aggregation Core

BNG Billing

Location Server

NMS MSE

VoD DPI

DIST

AGG

Edge OSS/BSS

Intelligent Edge

Customer Element

Multiservice Core

Access/ Aggregation

Ap

pli

ca

tio

n

La

ye

r S

erv

ice

La

ye

r N

etw

ork

L

aye

r

Carrier Ethernet

Service Exchange

Framework for User and Application-

Based Control

Video and Gaming

Data Center

Presence-Based

Telephony

Web Services

Mobile Apps

IP Contact Center

Op

era

tio

na

l L

ay

er

IPoDWDM Optical Network

Aggregation Node

Aggregation Network MPLS/IP

Carrier Ethernet Aggregation Access Edge

Aggregation Node

Aggregation Node

Ethernet Node

STB

VoD

Content Network

TV SIP

PON Node

DSLNode

Core

VoD

Content Network

TV SIP

Multiservice Core

Core Network

IP / MPLS Distribution Node

Corporate

Business

Corporate

Business

Residential

STB

Residential

Aggregation Node

Distribution Node

Mobile

2G/3G/4G Node

RAN Access Network

MPLS/IP

Corporate

Business

BSC/RNC

BSC/RNC

NGN System Technology Overview

TR-101 Functions

MSTP/REP/G.8032

L2 Access Network

• 802.1Q NNI

Local VLAN Significance

Flexible service mapping

Ethernet virtual

connection infrastructure

Security features

ATM/TDM backhaul over MPLS

EoMPLS/VPLS/L3VPN

IP Unicast/Multicast Forwarding

Ethernet/MPLS OAM

Pseudowire Redundancy

MPLS-TP

Unified MPLS

Fast Convergence

IPoDWDM integration

IPTV Edge

Backhaul HSI to BNG

Distributed Triple Play

Edge

Interworking MPLS

with MST/REP/G.8032

Multi-Chassis Link

Aggregation


BNG Billing

Location Server

NMS MSE

VoD DPI

DIST

AGG

Edge OSS/BSS

Intelligent Edge

Customer Element

Multiservice Core

Access/ Aggregation

Ap

pli

ca

tio

n

La

ye

r S

erv

ice

La

ye

r N

etw

ork

L

aye

r

Carrier Ethernet

Service Exchange


Based Control

Video and Gaming

Data Center

Presence-Based

Telephony

Web Services

Mobile Apps

IP Contact Center

Op

era

tio

na

l L

ay

er

IP NGN Carrier Ethernet Design




• Video Optimisations

IP N

GN

Arc

hit

ectu

ral F

ram

ew

ork

an

d F

un

cti

on

ali

ty

EoMPLS PW IP Edge

Aggregation Node

Bridge

How to Build the Ethernet Multipoint/ Multi-

Edge Architecture? VPLS or…

• VPLS = LAN emulation

• Smells like a LAN, but is not a LAN

• H-VPLS is just a scaling option, retains full mesh notion

• EoMPLS Pseudowire (PW) serving as ‘virtual’ bridge trunk into a 802.1ad Bridge Domain (BD)

• Idea ‘divorces’ Transport Protocols from Service Instance Identifier (although only 4k service instances can be multiplexed across a single PW)

• Scaling can be improved with 802.1ah, Unified MPLS, MS-PW, etc

PW

802.1ad

(Q-in-Q)

Ethernet

MST

/LAG/

REP

IP or IP-VPN

EoMPLS 802.1ad IP or IP-VPN

EoMPLS

EoMPLS H-VPLS VPLS

EoMPLS

EoMPLS H-VPLS VPLS

EoMPLS 802.1ad IP or IP-VPN

IP or IP-VPN

L2 M

PL

S

Ag

gre

gati

on

Se

rvic

e M

od

el

L2

+L

3 M

PL

S

Ag

gre

gati

on

Se

rvic

e M

od

el

Services

Residential: BTV/VoD, VoIP,

HSI

Ethernet VPN: E-Line

Ethernet VPN: E-LAN/-Tree

IP and IP-VPN

Residential: BTV/VoD, VoIP,

HSI

Ethernet VPN: E-Line

Ethernet VPN: E-LAN/-Tree

IP and IP-VPN

Core Edge Distribution Aggregation Access

Converged SP Network Architecture

Working LSP

PE PE

Protect LSP

NMS for Network

Management Control *

Client node Client node

MPLS-TP LSP (Static or Dynamic)

Pseudowire

Client Signal

with e2e and

segment OAM Section Section

*Or Dynamic

Control Plane

Connection Oriented, pre-determined working path and protect path

Transport Tunnel 1:1 protection, switching triggered by in-band OAM,

Options with NMS for static provisioning, or dynamic control plane for routing and signaling

Note: The cloud represents one MPLS-TP network, e.g., it may be in aggregation or access

Some Words about MPLS-TP

Some words about Unified MPLS

ABR A1

ABR B1

AGG A1 LSR A1

LSR B1 AGG B1

PE A1

PE B1

LSR A2

LSR B2 ABR B2 PE B2

PE A2 AGG A2

AGG B2

1.000 Nodes / Core

10.000 Nodes / Aggregation

100.000 Nodes / Access

ABR A2

LDP Downstream Ondemand

Static Routing

IP Fast Convergence

RFC3107

MPLS OAM

....

MPLS-TP

(Optional)

Cisco’s NGN CE Transport Direction

Characteristic SONET

/

SDH

Optical OTN

(ROADMs)

Electrical OTN

PBB-TE MPLS-TP IP/MPLS

Ethernet

Eline (10GE)

Eline (sub 10GE)

E-Tree

E-LAN

Legacy

F/R

ATM

TDM

IP

L3VPN

L3 Unicast

L3 Multicast

Content

General

Traffic Engineering

50ms restoration

Multiplexing Technology Time Division

Wave Division Time Division Statistical Statistical Statistical

UNI processing Limited None None Typically rich Typically rich Typically rich

Granularity VC-4 Lambda ODU Variable Variable Variable

Technology Maturity

Cisco focuses on IP/MPLS for the Carrier Ethernet Transport architecture.

Cisco targets MPLS-TP for the POTS and Access Networks while supporting already Ethernet Bridged Access

Cisco also addresses MPLS to the access with Unified MPLS

Dark Fibre / CWDM / DWDM and ROADM

Carrier Ethernet Aggregation

BNG

Business PE

Access Edge

Aggregation

Node

DSL

Ethernet

Core

VoD

Content Network

TV SIP

Multiservice Core

Core Network

IP / MPLS

Distribution

Node

STB

Corporate

STB

STB

Residential

Corporate

Corporate

Business

Business

Business

Residential

Residential

2G/3G Node

PON

Today IP/MPLS ETHERNET

Future/Vision

IP/MPLS MPLS-TP

MPLS-TP IP/MPLS

ETHERNET IP/MPLS

NGN CE System Design Evolution

Unified IP/MPLS





rch

itectu

ral F

ram

ew

ork

an

d F

un

cti

on

ali

ty

IP N

GN


BNG Billing

Location Server

NMS MSE

VoD DPI

DIST

AGG

Edge OSS/BSS

Intelligent Edge

Customer Element

Multiservice Core

Access/ Aggregation

Ap

pli

ca

tio

n

La

ye

r S

erv

ice

La

ye

r N

etw

ork

L

aye

r

Carrier Ethernet

Service Exchange


Based Control

Video and Gaming

Data Center

Presence-Based

Telephony

Web Services

Mobile Apps

IP Contact Center

Op

era

tio

na

l L

ay

er


Ethernet Virtual Connection (EVC)

Framework

Access Edge

BRAS

SR/PE

DPI

Core Network

MPLS/IP

DSL

ETTx

PON

MSPP

Cable

Aggregation

Mobile

Content Farm

VoD TV SIP

Content Farm

VoD TV SIP

Residential

STB

Residential

STB

Business

Corporate

Untagged

Single Tagged

Double Tagged

802.1q

802.1ad

etc.

L2 P-to-P

L2 MP local bridging

L2 Multipoint

L3 routed

Transport/tunnel protocol independent

Provider Bridging over MPLS

Provider Backbone Bridging over MPLS





rch

itectu

ral F

ram

ew

ork

an

d F

un

cti

on

ali

ty

IP N

GN


BNG Billing

Location Server

NMS MSE

VoD DPI

DIST

AGG

Edge OSS/BSS

Intelligent Edge

Customer Element

Multiservice Core

Access/ Aggregation

Ap

pli

ca

tio

n

La

ye

r S

erv

ice

La

ye

r N

etw

ork

L

aye

r

Carrier Ethernet

Service Exchange


Based Control

Video and Gaming

Data Center

Presence-Based

Telephony

Web Services

Mobile Apps

IP Contact Center

Op

era

tio

na

l L

ay

er


BSC

BRAS

From Design Principles to Implementation Centralized Edge

Core

VoD Servers

PE-AGG

High Speed Internet (HSI) L2 EoMPLS Backhaul

Per sub QoS

Central L3 and services

PPPoE and DHCP

N-PE

L3

Business VPN L2 EoMPLS backhaul

Per sub QoS

Central or distributed services (L3 VPN, L2 VPN, VPLS, FW)

MSE L2 VPN L3 VPN

RAN Backhaul L1 CES over Packet

Per Service QoS

Distribution of Clock

HSI

VoD

Broadcast TV

Business VPN

RAN Backhaul

Video and Voice

L3/MPLS edge distributed for efficient multicast and resiliency

Per service QoS

Intelligent Services Gateway Subscriber Session Handling

• Identifies sessions and service flows

Traffic classification for all access architectures

Session and flow provides per user granularity

• Dynamically assigns the session to a configured QoS policy (MQC) via Radius

• Establishes Virtual Route per Session

• Provides Policing, Access Control, Accounting, via Radius Push/Pull

Authentication

Logon

Change of Authorization (Policy Push)

L4 re-direction

Accounting details

• Fully integrated with Routing Infrastructure

e.g. mapping traffic to VRF, various routing tables

RADIUS Portal

L4R

Self- Provisioning/

Self-Care

RADIUS/AAA Push/Pull per Sub/Service Accounting

Internet

ISG Sessions

PPPoEoX

IPoE

DHCP

ISG ISG

Increased Scalability / Resiliency via

Distributed Services Drivers for More Clouds and Less Circuits

• Reduction of CAPEX and OPEX

Single provisioning point for all services (L2/L3)

Common converged infrastructure

Bandwidth Efficiency

• Scale

Integration and Distribution = Scale

• Enhanced resiliency

Automated rerouting, no need for interbox redundancy (VRRP)

Evolution to zero-loss video failover (0 ms)

• Monitoring, control, billing of future services

Video 2.0: P2P legal distribution model

Local content injection (VOD/I-frame caches)

Cloud Computing

• However, SP Org. structures will be diverse

Cisco supports circuit and cloud models

Organizational consolidation may lead to acceptance for cloud network configuration

Centralized BRAS/PE

Distributed Residential 3Play

Distributed Points of Scale

MPLS/IP

MPLS/IP

100–200K

Subs

8–24K

Subs

Single Point of Scale

Dynamic Ethernet Service Activation (DESA)

• Ethernet infrastructure with programmatic interface

• Intelligent Service Management engine

• Power of dynamic subscriber management from ISG to automate provisioning of Ethernet Services

• Automated, customized Ethernet service provisioning infrastructure that saves OPEX

Ethernet Virtual

Circuit (EVC)

Framework

Intelligent

Services

Gateway (ISG)

Dynamic Ethernet Service Activation : A Use

Case

1.Customer orders L2 service at portal

Box is shipped to customer with minimal configuration (MAC, VLAN ID)

Customer plugs in CPE

2.First L2-traffic triggers Radius request to activate services

3.L2 Service profile applied (ACLs, QOS, Psuedowire…)

4.Activates billing and inventory functions.

5.Customer can change profile dynamically at any time

Self-care

Dynamic

Service

Profile

L2-Session

L2-Session

1. 2.

DESA

3.

Dynamic

Pseudowire

Radius

Accounting

3.

4.





rch

itectu

ral F

ram

ew

ork

an

d F

un

cti

on

ali

ty

IP N

GN


BNG Billing

Location Server

NMS MSE

VoD DPI

DIST

AGG

Edge OSS/BSS

Intelligent Edge

Customer Element

Multiservice Core

Access/ Aggregation

Ap

pli

ca

tio

n

La

ye

r S

erv

ice

La

ye

r N

etw

ork

L

aye

r

Carrier Ethernet

Service Exchange


Based Control

Video and Gaming

Data Center

Presence-Based

Telephony

Web Services

Mobile Apps

IP Contact Center

Op

era

tio

na

l L

ay

er


L3 IP Mcast

L3-Core IP Mcast

L3 IP Mcast

L3-Core IP Mcast

L3 IP Mcast

L3-Core IP Mcast

• Simplified Operations IGMP/PIM only required, no snooping necessary in Aggregation network; snooping contained in DSLAM

Single point of L3 termination for IP/TV (no VRRP required)

No overlay topology

• Optimal and Scalable Forwarding SSM multicast distribution model for optimal tree creation under all conditions

Dynamic load balancing on equal cost paths (!!)

Optimized ARP and IGMP tables through distribution

Flexible content injection, including localized content

Same topology for unicast and multicast (!!)

Scales in terms of network nodes and subscribers in any topology due to distributed L3

Allows for on-path CAC

• Resiliency Consistent convergence in all failure cases: Source-, Node-, Link-Failure.

Anycast-Source model for enhanced redundancy

SSM security and address-space efficiency proven architecture in many 3Play production networks today

• Future Ready Possibility to add/distribute video monitoring and error concealment techniques easily

IP for Video and IP/TV Service Delivery Key Characteristics and Benefits

IP: 1.1.1.1

IP: 1.1.1.1

Optimal Replication

Load-Balancing Efficient Use of Access Bandwidth

Any-Cast Sources

Characteristic Native IP Multicast

VPLS p2multipoint MPLS Traffic Engineering

Multicast LDP (mLDP)

Convergence < ~1s (link and node

failures)

~50 ms (link failures)

< 3s (node failures)

~50ms (link failures only)

< ~1s (~50ms with p2p MPLS TE FRR

LP)

Offload routing (IGP metric based traffic engineering)

(IGP metric based traffic engineering)

Path separation (MoFRR or MTR)

(MoFRR or MTR)

Admission control and bw reservation

(RSVP)

Scalable mp2mp MulticastVPN

Typical Application

Secondary Distribution (TV)

(Wholesale) Secondary

Distribution (TV)

Contribution (TV) Enterprise VPN

Other Multicast Transport Options

•MoFRR=Multicast Only Fast ReRoute, MTR = Multi Topology Routing

•Note: VPLS-LSM and E-VPN are not currently part of the system


Broadband Forum’s TR-101 :

An application of the NGN CE

System

• VLAN architecture

• Multicast considerations

• Use of a video-optimised Service Router (next to ‘traditional’ TR-59 type BRAS)

• Resilience in the Ethernet Aggregation Network

• QoS in the Ethernet Aggregation Network

• Ethernet OAM

• Support for PPPoA and IPoA (aka interworking between XoA and XoE)

TR-101 Scope and Content Technical Considerations

Note: TR-101 introduces the term Broadband Network Gateway (BNG) to differentiate from the

legacy ‘BRAS’ term

DSL Provider Access Domain

A VLAN per DSLAM port

Local C.O.

DSLAM

CopperLoop

U-PE

DSL

PVC VLAN 19Port 2

VLAN 19

DSL

PVC VLAN 85Port 1

VLAN 85

QinQ

Outer VLAN 102

CPE

VLAN Architecture: VLAN per User (1:1)

• VLAN use similar to ATM, i.e. connection-oriented, i.e. configuration intensive

• IEEE802.1ad—Inner Tag = Port Identifier, Outer Tag = DSLAM Identifier

• Multicast replication inside Single BNG, not inside Ethernet Aggregation Network

• Multi-homing to two BNGs is complex

• Good for p2p business services; less ideal for Triple-Play Services

VLAN Architecture:

VLAN Per Service/SP (N:1)

• Single tagged (802.1Q or 802.1ad) VLANs—double tagging not needed

• Connectionless provisioning benefit; Access Node inserts Line ID (DHCP Opt 82 , PPPoE Intermediate Agent)

• Network Elements take care of subscriber MAC isolation through ‘split horizon forwarding’

• Multiple injection points per VLAN (BRAS and Video Service Router) possible

• Multicast replication within access/aggregation

DSL Provider Access Domain

Residential Bridging

Local C.O.

DSLAM

CPECopperLoop

DSL

PVC

DSL

PVC

U-PE

DSL

PVC

GE

VLAN 18

ISP 1

VLAN 19ISP 2

VLAN 18

ISP 1

VLAN 19

ISP 2

GE

• The models considered are part of DSL Forum TR-101 section 2.5.1

Multiple VC DSL UNI

Trunk UNI—Single VC DSL or Ethernet

Non-Trunk UNI—Single VC DSL or Ethernet

• In the Multiple VC DSL UNI model, the VC is used for both service prioritization and service connectivity

• In the Single VC DSL and Ethernet UNI models, these functions are distributed in 802.1p COS and 802.1Q VLANs

• Choice of model will be dependent on Access Node and RG capability, number and type of services offered and available bandwidth on local loop

DSLAM Connectivity Models

• Per Class scheduling within Access/Aggregation Network

• Per Class scheduling is essential for Video as the Access Node is effectively a multicast insertion/replication point (replicating per subscriber line)

• Per Class scheduling essential when separate Video BNG is deployed

Ethernet Aggregate QoS Within

the Access/Aggregation Network

Video BNG

BNG (BRAS)

IP/TV/VoD CBR or VBR

2 Mbps—3.9 Mbps 100 Kbps

3 Mbps

PQ

Voice (PQ with Policing at 100 Kbps)

Internet (Shaped or Policed at 3 Mbps)

Aggregation Access

Video Traffic Uniquely Marked

and Placed on Aggregation

Network

Work preserving scheduler

Static configuration on user link

120 Kbps

4.5 Mbps

Unspecified

PQ

6 Mbps

Cisco’s TR-101 Architecture From Discrete Elements

Video BNG

BNG BRAS

Aggregation Node:

Carrier Ethernet Switch/

Service Router with

Aggregation Function

Aggregation Node:

Carrier Ethernet Switch/

Service Router with

Aggregation Function

BNG/BRAS Extremely Important for PPP Services/Migration/Legacy

ATM Support

Business

Residential

STB

IP/MPLS Core L2 Aggregation

with

IGMP Snooping

Cisco’s TR-101 Architecture To Integrated Network Elements

BNG BRAS

Carrier Ethernet Service Router (L1, L2, L3)

Video BNG (L3 IP/PIM-SSM) + L2 Aggregation

Option to Virtualize L2 Aggregation (IP Control Layer, MPLS Techniques)

BNG/BRAS Extremely Important for PPP Services/Migration/Legacy

ATM Support

Business

Residential

STB

IP/MPLS Core L2 Aggregation

+ L3 IP/PIM-SSM SiSi SiSi



Architecture Options

Access

Ethernet Node

Ethernet Node

DSL Node

PON Node

Access

MPLS/IP Transport

Transport Deployment: VPWS, VPLS

Service Aware Deployment: VPWS, VPLS, MPLS VPN/IP


Aggregation Node

Distribution Node

Distribution Node

Aggregation Node

Core Network

IP / MPLS

VoD

Content Network

TV SIP

VoD

Content Network

TV SIP

IP Edge Multiservice Core

MPLS/IPoDWDM Optical Network

Core Node

Core Node

Aggregation Node

Aggregation Node

MPLS/IP/Ethernet

BSC/RNC

BSC/RNC

Optional Business Service Edge Node

Cell Site Gateway

Optional Video Service Edge Node

HSI Service Edge Node

STB

Corporate

Business

Corporate

Business

STB

Residential

Mobile

2G/3G/4G Node

Corporate

Business

Residential


c

Access

Ethernet Node

DSL Node

PON Node

Aggregation Network

MPLS/IP (+802.1ah), SyncE


Integrated

Edge Node

Distribution

Node

Distribution

Node

Integrated

EdgeNode

Core Network

IP / MPLS

VoD

Content Network

TV SIP

VoD

Content Network

TV SIP

Multiservice Core

MPLS/IPoDWDM Optical Network

Integrated

Edge Node

Integrated

Edge Node Core

Core

Optional L3 VPN Edge

Business

Corporate

Business

Corporate

RBS

Residential

STB

Residential

STB

Residential

STB

Business

Corporate

2G/3G/4G Node

RAN Access Network

MPLS/IP

BSC/RNC

BSC/RNC

CO aggregated

DSLAMs

L3VPN PE

L3VPN PE

NGN Carrier Ethernet System with Triple

Play Distributed Edge

NGN Carrier Ethernet System with MPLS-TP

Aggregation

Packet Optical Transport Service Edge

CPT50/200/600

NGXP

DWDM ROADM+

MPLS TP, VPWS, VPLS LDP

Access

Ethernet Node

Ethernet Node

DSL Node

PON Node

2G/3G/4G Node

Business

Corporate

Business

Corporate

RBS

Residential

STB

Residential

STB

RAN Access Network Ethernet/MPLS Bridged

Core Network

IP / MPLS

VoD

Content Network

TV SIP

VoD

Content Network

TV SIP

Multiservice Core

Core Node, CRS-3

Core Node, CRS-3

Business, ASR9k

Service Edge Node

Video, 7600

Service Edge Node

HSI, ASR1k

Service Edge Node

Mobile, 7600

Packet Gateway

NGXP

CPT50/200/600

NGXP

CPT50/200/600

Flexible

VLAN

Tag

Matching

H-QoS

Per EFP

L3

EoMPLS

VPLS

Local Connect (P2P)

Local Bridging (MP)

Security

Flexible

VLAN

Tag

Rewrite

Service Instance (Ethernet Flow Point)

EVC

Ethernet Virtual Connection

(EVC) Overview

One EFP Can Match One or

Multiple or Range of VLANs

at a Time

Flexible L2/L3 Service Mapping,

One or Groups of EFPs Can Map to

Same EVC

Per Service Features

VLAN Local Port Significance

Two VLAN Tag Aware

Flexible VLAN Tag Matching (Combination of Up to Two Tags)

Flexible VLAN Tag Manipulation,

Pop/Push/Translate

802.1ah Bridging

EVC infrastructure

Provides flexible

classification of L2

flows on Ethernet

interfaces

Supports dot1q and Q-

in-Q, 802.1ad with local

VLAN significance

Supports VLAN list,

ranges & combinations

Coexists with routed

subinterfaces

Flexible VLAN

acrobatics (translate,

pop, push)

Full H-QOS support

EFP – Ethernet Flow Point

EVC – Ethernet Virtual Connection

VPLS

EoMPLS PW

EoMPLS PW

EoMPLS PW

L3 subI/F

EFPs: VLAN

(802.1q/802.1ad)

X

VLAN xlate

1:1, 2:2 1:2

Multipoint EVC

Pt2Pt EVC

Pt2Pt EVC

Multipoint EVC

Bridging

Bridging

Routing

EFPs: VLAN (802.1q/QinQ)

Cisco EVC Infrastructure Overview

Cisco EVC UNI Flexible Frame Matching with Ethernet Flow Points

EFPs ...

Provide classification of L2 flows on Ethernet interfaces

Are also referred to as EVC service-instances

Support dot1q and Q-in-Q

Support VLAN lists

Support VLAN ranges

Support VLAN Lists and Ranges combined

Coexist with routed subinterfaces

Both EFPs and routed Subinterfaces support H-QOS

EFPs on Interface

100

101

102

Match VLAN range:

100-102

200

203

210

Match VLAN list:

200, 203, 210

300,11 Match VLAN: 300,100

400,1

400,2

400,3

Match outer VLAN 400,

inner VLAN range: 1-3

400,11

400,17

400,34

Match outer 400,

inner VLAN list: 11,17,34

140 Match VLAN: 14

Physical Ethernet interface (GE/10GE)

SVI

SVI

SV

I

SV

I VPLS

Local Connect

EoMPLS

L3

EoMPLS

VLANs

VLANs

Local Connect

BD

EoMPLS

VLANs

interface GigabitEthernet3/0/0

description Sample Configs

!

service instance 1 ethernet

encapsulation untagged

rewrite ingress tag push dot1q 3 symmetric

xconnect 10.30.30.173 2 encapsulation mpls


encapsulation dot1q 10

rewrite ingress tag pop 1 symmetric

bridge-domain 500 split-horizon

!


encapsulation dot1q 20 second-dot1q 200



!


encapsulation dot1q 20 second-dot1q any



* Not All Configuration Combinations Shown Here

interface GigabitEthernet3/0/1

description Sample Configs

!


encapsulation default

xconnect 10.30.30.173 2 encapsulation mpls

BD

Flexible Service Mapping/Forwarding



Service Delivery Models

• VLAN Models in accordance with TR-101 (residential) and MEF (business services)

• Business Services make use of 1:1 VLANs

• Video (unicast and multicast) always delivered across an N:1 VLAN from Aggregation node to Access Node

Allows efficient replication

Allows RSVP based CAC

Allows multicast CAC

• Other Services can either:

Share that N:1 VLAN (non trunk UNI model at Access Node)

Use a different N:1 VLAN (trunk UNI/Multi-VC model at Access Node)

Per Service N:1 VLANs

Use a different 1:1 VLAN (trunk UNI/Multi-VC model at Access Node)

1:1 VLAN for Internet Access (and Voice), N:1 VLAN Video

• Wholesale Models make use of 1:1 and N:1 VLAN models

IP NGN Carrier Ethernet Design—

VLAN Models

Multiservice

Core Network

Aggregation Node

ASR9k, ME3800X, 7600 Video SEN, 7600

PPP, IP, MPLS MPLS 802.1ad NNI, MPLS/IP Transport DSL, PON, Ethernet

Access Node

HSI SEN, ASR1k

Distribution Node

ASR9k, 7600

Large Scale

Aggregation Network

Intelligent

Services Edge

Efficient

Access Network

Ethernet/MPLS NNI

Core Node

Residential Services Architecture

(Centralized BNG)

HSI, VoIP VLAN(s) EoMPLS Pseudowire EoMPLS PW

VoD+IPTV , VoIP VLAN

802.1Q

QinQ

N:1 VLAN

Non/Trunk UNI, N:1 or 1:1 VLAN

Service Aware or Transport

VPWS, VPLS, MPLS/IP

MPLS/IP, IP Multicast, MoFRR

MPLS/IP

MPLS VPN

ISG Sessions

Enables PPPoE to IPoE

migration, usage based

services with service and

session control, DPI and SBC

May include in future service

supporting functions; Content

Cache, FCC, RET, VoD CAC

Retail 3Play Services

HSI, VoIP VLAN(s) EoMPLS Pseudowire EoMPLS PW

VoD+IPTV VLAN

802.1Q

QinQ

N:1 VLAN

Trunk UNI, N:1 or 1:1 VLAN

MPLS/IP

MPLS VPN

ISG Sessions Wholesale 3Play Services

802.1Q

QinQ H-VPLS, IGMP snooping, CAC IP, PIM

HSI SEN

Video SEN

HSI SEN

Transport Deployment

Service Aware Deployment

Non-Trunk UNI, N:1 VLAN Residential Services Aggregation Model

• Port-significant VLAN ids removed on ingress

• Routing AND bridging in a common N:1 VLAN

• VLAN id added on egress towards BNG

802.1Q [10]

802.1Q [10]

IPoE TV, VoD

Aggregation BNG Access Distribution

20xGE 2x10GE 2x10GE 20xGE

HSI IP/PPPoE

IPoE TV, VoD

HSI IP/PPPoE

802.1Q [100]

Bridge Domain 100

Ingress

POP TAG 10 Symmetric

Ingress POP TAG 100 Symmetric

VFI

IGM

P s

noopin

g

Gateway for VoD/IP/TV

Ingress

POP TAG 10 Symmetric

Multiservice

Core Network

Integrated Edge Node

7600, future ASR9k L3 VPN PE

Distribution Node

7600, ASR9k

Large Scale

Aggregation Network

Intelligent

Services Edge

Efficient

Access Network

MPLS NNI

Core, CRS1

Residential Services Architecture

(Distributed BNG)

N:1 or 1:1 VLAN

Service Aware

VPWS, VPLS, MPLS/IP

MPLS/IP, PIM

MPLS VPNs, Multicast VPNs

Trunk or Non Trunk UNI

ISG Sessions

May include service supporting

functions: Content Cache, FCC,

RET, Vod CAC, DPI, SBC,

TV

N:1 or 1:1 VLAN

HSI, VoIP, VoD

N:1 VLAN IP Multicast or Multicast VPN

802.1ad (1ah)

SP NNI

802.1q

PPPoE/IPoE

Wholesale 3 Play Services

Retail 3Play Services

MPLS VPN based managed wholesale services,

Enables PPPoE and IPoE

coexistence, support for video

and voice services over FTTX

and future PON access

PPP, IP, MPLS MPLS 802.1ad NNI, MPLS / IP Transport DSL, PON, Ethernet

Access

Node

Non Trunk UNI, 1:1 VLAN Model Residential Services Aggregation Model, Distributed Edge

PIM-SSM

I/F

Routed CPE

STB

IP

Routed CPE

STB

IP

MVR

Non Trunk UNI

I/F (ISG)

HSI/VoD/VoIP I/F (ISG)

PPP

IP

802.1q or QinQ

802.1q

HSI/VoD/VoIP

TV

Access Distribution

Nx10xGE Nx10GE Nx10GE N x10GE

CPE

VDSL, ADSL2+ Ethernet and PON

Integrated Edge

MPLS/IP with MPLS/Multicast VPN

PPP, IP, MPLS 802.1ad NNI, MPLS / IP Transport DSL, PON, Ethernet

Business Services Architecture

Business E-LINE

Business E-LAN

H-VPLS or VPLS

EoMPLS

Port, 1q, QinQ

Port, 1Q, QinQ

Port, 1Q, QInQ

Business L3 VPN

Ethernet

QinQ

Port, 1Q, QInQ

MPLS VPN

Port, 1Q, QinQ

VPLS

MPLS VPN/Multicast VPN (GRE)

VPLS+802.1ah

H-VPLS or VPLS and VPLS+1ah

MPLS VPN

Transport Deployment

Service Aware Deployment

Multiservice

Core Network

Aggregation Node

ASR9k, ME3800X, 7600 Business SEN, ASR9k

MPLS

Access Node

Business SEN, ASR9k

Distribution Node

ASR9k, 7600

Large Scale

Aggregation Network

Intelligent

Services Edge

Efficient

Access Network

Ethernet/MPLS NNI

Core Node


VPWS, VPLS, MPLS/IP


Wholesale Transport Services Architecture

TV N:1 or 1:1 VLAN

HSI, VoIP, VoD,TV

N:1 VLAN w/ Access Node MVR

TV N:1 or 1:1 VLAN

HSI, VoIP, VoD

802.1ad SP NNI PIM SSM

PIM SSM

802.1ah SP NNI

VPLS+802.1ah (ISID per Retailer/Access Node

N:1 VLAN w/ Access Node MVR

VPLS+IGMP Snooping over Physical Topology

VPLS+IGMP Snooping over Physical Topology

Multiservice

Core Network

Aggregation Node

ASR9k, ME3800X, 7600

MPLS

Access Node Distribution Node

ASR9k, 7600

Large Scale

Aggregation Network

Intelligent

Services Edge

Efficient

Access Network

Ethernet/MPLS NNI

Core Node


VPWS, VPLS, MPLS/IP


H-VPLS Transport

IEEE 802.1ah Service Aggregation Model

VFI

Core Access Distribution


Aggregation

EPLAN: Port

Classify default

EPLAN: QinQ Access

Classify S-VLAN

Ingress Pop S-VLAN

symmetric

EVPLAN: 802.1q Access

Classify C-VLAN

Ingress Pop C-VLAN

symmetric

802.1q or QinQ

B-MAC

BD

802.1q or QinQ

802.1q or QinQ

C-MAC

BD2 ISID-2

VFI 802.1q or QinQ

C-MAC

BD2 ISID-1

Multiservice

Core Network

Aggregation Node

NGXP, CPT Video SEN, 7600

PPP, IP, MPLS MPLS 802.1adNNI, DWDM+MPLS TP DSL, PON, Ethernet

Access Node

HSI SEN, ASR1k

Distribution Node

NGXP, CPT

Large Scale

Aggregation Network

Intelligent

Services Edge

Efficient

Access Network

Core CRS-3

Residential Services Architecture with MPLS-TP

Aggregation

Transport Focused Deployment

VPWS, VPLS over MPLS TP

EoMPLS Pseudowire EoMPLS PW (static or LDP)

IPTV Transport

802.1Q

QinQ

N:1 VLAN

Trunk UNI, N:1 or 1:1 VLAN

MPLS/IP, IP Multicast, IP FRR, MoFRR

MPLS/IP

MPLS VPN

ISG Sessions

Retail or Wholesale 3Play Services

802.1Q

VPLS LDP, IGMP snooping per VFI

HSI SEN

Video SEN

EoMPLS PW (static or LDP) 802.1Q

QinQ

HSI, VoIP VLAN(s)

VoD, IPTV VLAN

Trunk UNI, N:1 VLAN

PIM

IP

MPLS/IP

MPLS/Multicast VPN

Video Unicast Transport

Multiservice

Core Network

Business SEN, ASR9k

MPLS, VPWS, VPLS, L3 DSL, PON, Ethernet

Access Node

Business SEN, ASR9k

Large Scale

Aggregation Network

Intelligent

Services Edge

Efficient

Access Network

MPLSNNI

CRS-3

Business Services Architecture with MPLS-TP

Aggregation

Business E-LINE

Business E-LAN

H-VPLS

EoMPLS

Port, 1Q, QinQ

Port, 1Q, QInQ

Includes all L3 VPN C-VLANs from the

Access Node represented by S-VLAN

Business L3 VPN

EoMPLS PW Ethernet

QinQ

Port, 1Q, QInQ

VPLS

MPLS VPN

Aggregation Node

NGXP, CPT

Distribution Node

NGXP, CPT

VPLS over MPLS

MS-PW PW Segment over MPLS PW Segment (static or LDP) over MPLS TP

802.1adNNI, DWDM+MPLS TP

Transport Focused Deployment

VPWS, VPLS over MPLS TP



High Availability

Baseline Network Availability Mechanism • Access Mechanisms

Multiple Spanning Tree (MST) or MST Access Gateway

Resilient Ethernet Protocol (REP)

LACP, Multi-Chassis LACP

Inter Chassis Control Protocol (ICCP)

• IP Services and MPLS IGP:

IP Fast Convergence

BFD

Multicast Fast Convergence, MoFRR

NEW!

Large Scale Aggregation

Intelligent Edge

Distribution Node Cisco 7600 with ES+

BNG

MPLS PP, IP, MPLS MPLS/IP

Aggregation Node Cisco 7600 with ES+

BNG

Access Node

Efficient Access

DSL, Ethernet

Multiservice

Core

MPLS Services:

VPLS mac-address withdrawal; MST/REP and VPLS interworking

Pseudowire redundancy including pseudowire status bit support

MPLS TE-FRR Link and Node protection with IP services, PW/VPLS PW tunnel selection

• Simplicity should be the guiding rule of all Tight SLA designs

• Service Recovery = Protection (super-fast) and Restoration (fast)

• IP/MPLS fast convergence baseline has improved dramatically

IGP Fast Convergence (FC) broke the barrier of <200msec restoration time

Powerful and simple baseline tool for all L2 and L3 services, covering multiple failures

Combined with BGP PIC* ensures fast convergence for IP/IPVPN service edge

It is simple – a built-in property of the IP/MPLS network

• Protection with IP Fast ReRoute (FRR)

Tool to improve on IGP FC for some topologies (e.g. Two-plane designs)

Provides local protection with <50msec recovery

• Protection with MPLS TE FRR

Local Link and Node Protection for deterministic <50msec recovery

Seamless service restoration (make-before-break)

Applies to all transit MPLS link and node failures

Tight SLAs for CE/MPLS Infrastructure Technology Options Overview

* BGP PIC – BGP Prefix Independent Convergence

Gain

(measured in reduction of msecs)

Complexity

(always impact OPEX, may impact CAPEX)

The engineering

optimum

The theoretical,

academic optimum

• Enabled by IGP fast topology updates and distributed computation

Optimized SPF calculation

Optimized RIB and FIB calculation

Optimized FIB distribution to the forwarding plane (e.g. linecards)

• IGP FC always matters

BGP next-hop, IPTV PIM-SSM source availability, VOD services

MPLS pseudowires leverage IP FC

MPLS TE topology and resource information

Catastrophic events

• No impact on the network stability

• Works out of the box on Cisco devices

200-500 ms convergence

• Years of experience with large SP networks deployments

• Operational simplicity is achieved!

IGP Fast Convergence (IPFC) Properties and Benefits

• Leverage IP/MPLS infrastructure tight-SLA technologies

IGP Fast Convergence

MPLS TE FRR

IP FRR Loop Free Alternative (LFA)

• Optimize L3 PE forwarding plane for fast convergence

BGP Prefix Independent Convergence

IP Multicast PIM Fast Convergence

Multicast only Fast ReRoute (MoFRR)

Tight SLAs for L3 Services

IP/MPLS optical integration - IPoDWDM

Trans-ponder

SR port on

router

Optical impairments Co

rrecte

d b

its

FEC limit

Working path

Switchover lost data

Protected path

BE

R

LOF

WDM

FEC

Standard protection

WDM port on router

Optical impairments Co

rrecte

d b

its

FEC limit

Protection trigger

Working path Protect path

BE

R

Near-hitless switch

WDM

FEC

Proactive protection

pre-FEC FRR Fault Packet Loss (ms)

Highest Lowest Average

Yes Optical-switch 11.50 11.18 11.37

Yes Noise-injection 0.02 0.00 0.00

Yes Fibre-pull 11.05 0.00 3.23

Yes PMD-injection 0.08 0.00 0.02

No Optical-switch 11.47 11.54 11.37

No Noise-injection 7404.00 1193.00 4305.00

No Fibre-pull 28.81 18.52 21.86

No PMD-injection 129.62 122.51 125.90

MPLS FRR, IP FRR, IS-IS fast convergence : all achieve near zero outage for slow failures

IP / optical integration enables the capability:

To identify degraded link using optical data (per-FEC BER)

Start protection (i.e. by signaling to the IGP) before traffic starts

failing, achieving hitless protection in many cases

VFI

VFI

VFI

VFI

I’m the second-best root

I’m just in a normal STP ring

I’m the root

• Operation

Top PE sends “pre-canned” BPDUs (best root) into L2 access network

Access network runs normal MSTP, MSTP is terminated locally on the PE access ports

MSTP TCNs trigger VPLS MAC Flush + Withdraw

MST instances have per port local significance – greatly improves scalability

Only subset of functionality needed for REP Access Gateway (future)

• Benefits

Seamless integration with any L2 access network or node running MSTP, full standard compliance

Inherent scalability and faster L2 convergence due to local Rapid STP behaviour

MST Access Gateway Operation and Benefits

Ring protection protocols:

another push beyond spanning tree

• A ring topology is a cheap method of achieving redundancy, suitable for access networks

• Spanning tree is geared toward loop avoidance in a general topology and does not require configuration, but this comes at the cost of convergence time

• If a topology is known to be a ring at the outset, a loop avoidance protocol can be designed and optimized to achieve rapid 50ms convergence (but does require configuration and some hardware support)

• G.8032 and Cisco’s REP are such examples

• A new protocol designed to provide a solution for fast and predicable Layer 2 convergence for Carrier Ethernet networks

• Fast and predictable convergence

Convergence time: 50 to 250ms

Fast failure notification even in large rings

• Limit the scope of Spanning Tree

STP is deactivated on REP interfaces

STP TCN sent away from the segment if segment fails

• Allows VLAN load balancing for optimal bandwidth utilization

• Cisco proprietary (future alignment and interworking with ITU-T G.8032)

What Is Resilient Ethernet Protocol (REP) ?

• REP guarantees there is no connectivity between two edge ports on a segment

• A REP segment is a chain of ports connected to each other and configured with a segment ID

• When all interfaces in the segment are UP, the alternate port is blocking

• When a link or switch failure occurs on the segment, then blocked port goes forwarding

REP A Segment Protocol

REP Segment

Blocked Open Alternate Port

Link Failure

Edge Port Edge Port

• Enhancement to REP introduced in latest Ethernet Access Node releases

• Allows interconnection of REP segments with STP/VPLS domains

REP Edge No Neighbour

REP Segment

Blocked Open Alternate Port

Link Failure

Edge Port Edge Port

Non REP Domain

STP TCN

G.8032 Ethernet Ring Protection (ERP)

Objectives and Principles

• Protection switching on Ethernet layer

• Utilizes conventional Ethernet bridge domains as forwarding plane

• Preventing any loops by blocking mechanism

• Can protect against any single failure on the ring

• Fast convergence (50 ms)

• Support of administrative commands (e.g. to force a failure etc)

• Relies on Ethernet OAM for fault detection and as its control channel, and Y.1731 Ring-Automatic Protection Switching (R-APS) to signal a failure upstream

• Supports Closed and Open (like a REP Segment) Rings

• Functionally Equivalent to REP

Pseudowire-Redundancy Signalling the Status of A PW

• T-LDP PW Status TLV:

0x00000000 - Pseudowire forwarding (clear all failures)

0x00000001 - Pseudowire Not Forwarding

0x00000002 - Local Attachment Circuit (ingress) Receive Fault

0x00000004 - Local Attachment Circuit (egress) Transmit Fault

0x00000008 - Local PSN-facing PW (ingress) Receive Fault

0x00000010 - Local PSN-facing PW (egress) Transmit Fault

0x00000020 - PW Forwarding Standby (NEW Status Bit)

0x00000040 – Request switchover to this PW (New Status Bit)*

• Two modes of operation

Independent Mode: Each side signals it separate state (forwarding/standby)

Master/Slave Mode: One Master imposes the PW state onto slaves

• Works across single segment and multisegment PWs

See draft-ietf-pwe3-redundancy

draft-ietf-pwe3-redundancy-bit

Use Case:

* Used when N:1 PE redundancy is needed

http://tools.ietf.org/html/draft-ietf-pwe3-redundancy







http://tools.ietf.org/html/draft-ietf-pwe3-redundancy-bit









Pseudowire Redundancy (Two-way) Leveraging ICCP and Multi-Chassis LACP

PE1

PE2b

IP/MPLS

CE2 CE1

Primary

Pseudowire

IP or MPLS

PE2a

Redundant

Pseudowires

Failures within MPLS network are protected by IP FC, IP FRR, MPLS FRR

Failures of Ethernet Attachment Circuits or PE handled by two-way PW redundancy (Note: both sides of the PW are protected)

Inter-Chassis Communication Protocol (ICCP) for synchronization of redundancy state control for LACP and PW redundancy

LACP LACP

ICCP ICCP

Inter-Chassis Control Protocol Link Aggregation Control Protocol ICCP = LACP =

Aggregation Redundancy Active/Active Aggregation Node Redundancy

• Natural” load balancing between BRASs

• Behavior can be influenced with PADI-delay

• Terminating two pseudowires into VFI/Bridge

• Learning can be disabled + Static mac-address entries + IGMP Snooping

VLAN 10

VLAN 10


VFI



PPPoE Sessions

PPPoE Sessions



Aggregation Redundancy Active/Backup Access Node Redundancy (FlexLink)

VLAN 10

VLAN 10

Eo

MP

LS

PW

BNG

PPPoE Load Sharing

Aggregation Node

VRRP/HSRP



PPPoE Sessions

Pseudowire connecting the Aggregation nodes

FlexLink


Aggregation Redundancy Interworking MPLS and MST for Active/Active


VLAN 10

Eo

MP

LS

PW

Eo

MP

LS

PW

•Aggregation node participates with MST, PW dedicated to BPDU handling

•MST Access Gateway allows beter scaling and MST separation between access rings/links



BNG

PPPoE Load Sharing

Aggregation Node

VRRP/HSRP VLAN 10

VLAN 10

PPPoE Sessions

MST/RST Native VLAN

STP Root

X

• “REP or G.8032 is running on Aggregation / Integrated Edge Nodes

• REP Segment or G.8032 ERP Open Ring unblocks in any failure case

• TCN sent on segment failure Triggers VPLS MAC-Withdrawal

Aggregation Redundancy End to End REP / G.8032 ERP support



ETTH REP Node

ETTH REP Node

ETTH REP Node

VFI

Eo

MP

LS

PW

X



BNG

PPPoE Load Sharing

Aggregation Node

VRRP/HSRP

PPPoE Sessions

VFI

REP Edge Port

Blocked Alternate

PORT

REP Edge Port

Aggreagtion Redundancy Interworking REP and MPLS



ETTH REP Node

ETTH REP Node

ETTH REP Node

VFI

Eo

MP

LS

PW

X



BNG

PPPoE Load Sharing

Aggregation Node

VRRP/HSRP PPPoE Sessions

VFI

REP Edge No Neighbor

Blocked Alternate

PORT

•“REP Edge No Neighbor” on access nodes • REP Segment unblocks in any failure case • TCN sent on segment failure Triggers VPLS MAC-Withdrawal

REP Edge No Neighbor

MST (Access Gateway)

MST (Access Gateway)



Quality of Service

Ensuring QoS SLAs UNI

Ingress and Egress maximum/minimum bandwidth

Ingress hierarchical shaping/scheduling

(e.g. Port, S-VLAN, C-VLAN, Class)

ingress hierarchical policing

Ingress and Egress DiffServ queuing per shaped max Bw

4 scheduling levels

2 strict priorities

3 parameter scheduler (max, min, remaining)

Service grouping for shared policies

Classification on customer or provider marking

Traffic stats per VLAN interface and per QoS class

CE-A CE-B

Ethernet Virtual

Circuit (EVC) –

Point-to-Point

Ethernet Virtual Circuit

(EVC) – Multipoint

EVC - An association of two or more UNIs

- Connection between two or more devices

MPLS Transport

NNI/Metro-Core • DiffServ queuing

• Aggregate queuing and scheduling

• 2 strict priorities

• 8 classes

Subscriber Level

Port

PQ2

Port Level

Subscriber group Level

BW

Linecards with Scalable H-QoS 4-Level Hierarchy Example

• 4 layers H-QOS for MEF and TR-101 compliant SLA applications

• Ingress and egress H-QOS with hierarchical shaping

• Shared H-QoS policy applied across multiple EVCs – allows for bundled SLAs

• Dual Priority scheduling with priority propagation for minimum latency and jitter (Voice+Video)

• Flexible & granular classification: Full Layer 2, Full Layer 3/4 IPv4, IPv6 (even for L2 services)

BW

PQ1

Class Level

EV

C1

EV

C 2

Cu

sto

mer - e

gre

ss

EV

C1

EV

C 2

Cu

sto

mer - in

gre

ss

PQ1

BW

Subscriber Level

Subscriber group Level

Class Level

BW

BW

BW

PQ2

PQ1

PQ1

Business Critical

Internet – Best Effort

VoIP – Bearer + Control


Telepresence


Business Critical




Telepresence


TV Broadcast CAC on the Access Node Interface

Access UNI

IP Multicast or VPLS IGMP snooping CAC options on the Access Node :

• Single Mroute state limits

• Multiple Mroute state limits

• Cost factor Mroute state limits

Multicast CAC Models

• Limits the number of multicast streams sent towards the DSL Access Node

• Applies to deployment models that have the same stream encoding and assumes the maximum bandwidth per stream is known and used to calculate the number of possible streams

Single Mroute state limits

• Limits the number of multicast streams sent towards DSLAM, per TV programs bundles

• Enables TV programs to be bundled and delivered to the DSLAM based on different CAC rules

• The streams encoding is the same and known

Multiple Mroute state limits

• Enables bandwidth CAC control

per TV bundles or content

providers

• Enables global bandwidth CAC

control per stream types

Cost factor Mroute state limits

Mullticast VPN/PIM

Multiservice Core Network

Aggregation Node Video SEN

PPP, IP, MPLS MPLS 802.1ad NNI, MPLS / IP Transport DSL, PON,Ethernet, 2G/3G

Access Node

HSI SEN

Distribution Node

Large Scale Aggregation Network

Intelligent Services Edge

Efficient Access Network

Core Node

Service or Transport VPWS, VPLS, MPLS/IP

Business SEN

Access UNI VPLS IGMP snooping



Security

Access Edge

Core Network

IP/MPLS

WiMAX


Content Network

VoD TV SIP

Content Network

VoD TV SIP

Residential

STB

Business

Corporate

Residential

STB

Business

Corporate

Residential

STB

Business

Corporate

Aggregation

Node

Aggregation

Node

Distribution

Node

Distribution

Node

Aggregation

Node

Aggregation

Node

Ethernet

Access Node

Ethernet

Access Node

DSL

Access Node

Aggregation Network

MPLS/IP

STP ETTX

Access

Rings

Residential

BNG

Business

MSE

Carrier Ethernet—New EVC Model

Centralized Model

IP Unicast/Multicast/VRF routing

No Network awareness for subscriber sessions

Per VLAN MAC Limiting (Per EVC in future)

VLAN-based Access Lists

DHCP Snooping/DAI/MAC Security

Storm Control

L3/4 ACLs

Split Horizon

Untrusted Mostly Trusted

Centralized Model

Subscriber session awareness for PPPoE, IP Session

Authentication: PPPoE or Web-Based

Authorization: Radius based on Username, DHCP Option 82

IP Address Management: RADIUS, DHCP

Distributed Model

IP Unicast/Multicast/VRF routing

No Network awareness for subscriber sessions

Per VLAN MAC Limiting

VLAN-based Access Lists

DHCP Snooping/DAI/Mac Security

Storm Control

L3/L4 ACLs

Split Horizon

Trusted Distributed Model

Subscriber session awareness for PPPoE, IP Session

Authentication: PPPoE or Web-Based

Authorization: RADIUS based on Username, DHCP Option 82

IP Address Management: RADIUS, DHCP



Summary




• Video Optimisations

Summary: NGN CE System

Arc

hit

ectu

ral F

ram

ew

ork

an

d F

un

cti

on

ali

ty

IP N

GN


BNG Billing

Location Server

NMS MSE

VoD DPI

DIST

AGG

Edge OSS/BSS

Intelligent Edge

Customer Element

Multiservice Core

Access/ Aggregation

Ap

pli

ca

tio

n

La

ye

r S

erv

ice

La

ye

r N

etw

ork

L

aye

r

Carrier Ethernet

Service Exchange


Based Control

Video and Gaming

Data Center

Presence-Based

Telephony

Web Services

Mobile Apps

IP Contact Center

Op

era

tio

na

l L

ay

er

IPoDWDM Optical Network

Aggregation Node

Aggregation Network MPLS/IP

Carrier Ethernet Aggregation Access Edge

Aggregation Node

Aggregation Node

Ethernet Node

STB

VoD

Content Network

TV SIP

PON Node

DSLNode

Core

VoD

Content Network

TV SIP

Multiservice Core

Core Network

IP / MPLS Distribution Node

Corporate

Business

Corporate

Business

Residential

STB

Residential

Aggregation Node

Distribution Node

Mobile

2G/3G/4G Node

RAN Access Network

MPLS/IP

Corporate

Business

BSC/RNC

BSC/RNC

NGN System Technology Overview

TR-101 Functions

MSTP/REP/G.8032

L2 Access Network

• 802.1Q NNI

Local VLAN Significance

Flexible service mapping

Ethernet virtual

connection infrastructure

Security features

ATM/TDM backhaul over MPLS

EoMPLS/VPLS/L3VPN

IP Unicast/Multicast Forwarding

Ethernet/MPLS OAM

Pseudowire Redundancy

MPLS-TP

Unified MPLS

Fast Convergence

IPoDWDM integration

IPTV Edge

Backhaul HSI to BNG

Distributed Triple Play

Edge

Interworking MPLS

with MST/REP/G.8032

Multi-Chassis Link

Aggregation

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Documents

Technologies, Architectures and Deployment Modelsd2zmdbbm9feqrf.cloudfront.net/2011/mex/pdf/BRKSPG-2111.pdf · Cisco Confidential 3 NGN Carrier Ethernet System: Overview. Source: