Capitalizing on new standards for atm to mpls convergence
This presentation is the property of its rightful owner.
Sponsored Links
1 / 19

Capitalizing on New Standards for ATM to MPLS Convergence PowerPoint PPT Presentation


  • 45 Views
  • Uploaded on
  • Presentation posted in: General

Capitalizing on New Standards for ATM to MPLS Convergence. John Sax, CTO, Data Networking Group, Lucent Technologies Dr. Kireeti Kompella, Distinguished Engineer, Juniper Networks Mark Bieberich, Program Manager, The Yankee Group. Market Drivers for ATM to MPLS Interworking Standards.

Download Presentation

Capitalizing on New Standards for ATM to MPLS Convergence

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Capitalizing on new standards for atm to mpls convergence

Capitalizing on New Standards for ATM to MPLS Convergence

John Sax, CTO, Data Networking Group, Lucent Technologies

Dr. Kireeti Kompella, Distinguished Engineer, Juniper Networks

Mark Bieberich, Program Manager, The Yankee Group


Market drivers for atm to mpls interworking standards

Market Drivers for ATM to MPLS Interworking Standards

  • CAPEX and OPEX constraints necessitate phased migration to a converged IP/MPLS network.

    • Wholesale replacement of Layer 2 Edge is not economically feasible.

  • Carriers must sustain profitable FR/ATM service revenue during the IP/MPLS core consolidation process.

    • Today’s FR/ATM service customers require QoS and SLAs to remain intact as traffic migrates to IP/MPLS core.

  • Carriers must achieve operational parity between ATM and MPLS network domains.

    • Layer 2 service provisioning and management processes must be preserved in an IP/MPLS network environment.

  • Inherent reliability characteristics of ATM must remain intact as traffic migrates to the IP/MPLS core.

    • ATM signaling and protection mechanisms remain essential to service and network reliability.


Ip mpls convergence atm mpls interworking occurs in phase ii

IP/MPLS Convergence ATM - MPLS Interworking Occurs in Phase II

INITIATIONSERVICE PROFIT ADOPTIONREALIZATION

Phase I

Announcement of IP/MPLS consolidation plan

Initial investment in IP/MPLS core begins; first phase of core POPs upgraded or deployed

New enterprise, residential IP-based services targeted

Phase II

Core expansion continues; edge investment accelerates

Targeted services from Phase I experience high revenue growth

Limited number of legacy routersand switches decommissioned

Phase III

Critical mass of traffic from overlay networks now converged to IP/MPLS core

Enterprise and residential IP-based services proliferate

Profitability goals of IP-based services achieved

2003 – 1H04 1H04 – 1H06 1H06 – 2008


Layer 2 traffic migration to ip mpls core accelerating the need for atm to mpls interworking

Layer 2 Traffic Migration to IP/MPLS CoreAccelerating the Need for ATM to MPLS Interworking

  • Recent Yankee Group Research:

    • Aggressive service providers plan to migrate up to 50 percent of their FR/ATM service traffic to the IP/MPLS Core in the next 3 years.

Rate of Traffic Migration From ATM to MPLS Core*

30

27%

25

20

14%

15

10

4%

5

*taken from an ’04 Yankee Group survey of 15 top service providers worldwide

0

2004

2005

2006


Atm to mpls interworking standards requirement for protecting profitable services

14,000

12,000

10,000

8,000

ATM Service Revenue

Revenue in millions of $US

6,000

FR Service Revenue

4,000

2,000

0

2004

2005

2006

2007

2008

ATM to MPLS Interworking Standards Requirement for Protecting Profitable Services

  • Plans for IP/MPLS network consolidation must embrace standards that protect growing, profitable revenue streams.

North America FR/ATM Service Revenue ForecastSource: the Yankee Group, 2004


Capitalizing on new standards for atm to mpls convergence

Poll #1: Which business driver is most important to your plans for adopting standards-based ATM to MPLS interworking?

  • Minimizing CAPEX and OPEX while consolidating networks

  • Sustaining profitable FR/ATM service revenue with QoS

  • Achieving operational parity between ATM and MPLS network domains

  • Preserving network reliability characteristics of ATM as traffic migrates to MPLS


Together lucent and juniper drive for standardized scalable atm to mpls interworking

Together, Lucent and Juniper Drive for standardized, scalable ATM to MPLS Interworking

  • Lucent - Juniper Multiservice MPLS Core solution, jointly developed, implements MPLS standards to deliver ATM over MPLS interworking:

    • Standards-based, dynamic interworking between ATM and MPLS

    • Scalable methods to distribute ATM routing information across the MPLS network

  • Lucent and Juniper contributions to the MPLS/FR Alliance efforts build upon our joint Multiservice MPLS Core Solution (Releases 1 and 2)

    MPLS/FR Alliance progress:

    • Distributed Model for ATM to MPLS Interworking

    • Virtual Trunks for scaling ATM networks across an MPLS core

    • Multi-protocol Border Gateway Protocol (MP-BGP) for ATM address reachability information


Atm to mpls interworking standards mpls fr alliance integrated model option 1

LER Aggregates

ATM VPs

Label Edge Router

(LER)

Label Edge Router (LER)

Existing ATM

Network

Existing ATM

Network

MPLS Network

ATM Switch

ATM Switch

Pseudowire

PSN Tunnel

ATM to MPLS Interworking StandardsMPLS/FR Alliance - Integrated Model, Option #1

  • Router performs both ATM routing and signaling and MPLS path setup.

    • Label Edge Router (LER) must scale 1,000’s of ATM VPs into MPLS Pseudowire, only one opportunity to aggregate services.

    • Separate network management systems must be integrated.

Combined management of

ATM and MPLS networks


Atm to mpls interworking standards mpls fr alliance integrated model option 2

Existing ATM

Network

ATM Switch

ATM to MPLS Interworking StandardsMPLS/FR Alliance - Integrated Model, Option #2

  • Adds a third network element – a hybrid that combines both switching and routing.

    • Requires a router in the core of the network.

    • Three box solution, requires significant incremental investment.

    • Separate network management systems must be integrated.

Three Boxes Needed in

Network

Label Edge Router

(LER)

Label Edge Router (LER)

Existing ATM

Network

MPLS Network

ATM Switch

160G+ New Hybrid Network Element


Capitalizing on new standards for atm to mpls convergence

Administrative separation

between ATM and MPLS

Existing ATM

Network

Existing ATM

Network

ATM Switches aggregate

connections

Virtual Trunk

MPLS Network

ATM Switch

ATM Switch

MPLS Router

(LER)

MPLS

Router

(LER)

Aggregation

Point #1

Aggregation

Point #2

ATM to MPLS Interworking Standards MPLS/FR Alliance Distributed Model, Option #3Based on Lucent - Juniper Multiservice MPLS Solution, Available Today

  • Distributed functionality on existing ATM switches, and Routers - allows service provider to leverage existing assets with minimal incremental investment.

    • Preserves ATM functions on the ATM switch (requires limited software upgrades to existing switches), and the routing functions on the router.

      • MPLS router (LER) is not needed to support ATM signaling and routing, or interwork individual VCs or VPs.

      • ATM switches aggregate VPs into a Virtual Trunk before sending to MPLS router .


Atm to mpls interworking standards signaling and data plane scaling issues existing networks

ATM to MPLS Interworking Standards: Signaling and Data Plane Scaling IssuesExisting Networks

  • Issue:1:1 VC/VP to LSP Mapping

    • 1:1 VP to LSP association requires interworking each ATM VP with a single MPLS path.

    • Creates signaling and data plane scalability issues.

Requires interworking each ATM VP with each MPLS path

CBR VP

1 mbps

VBR rt VP

5 mbps

10 mbps

VBR nrt VP

30 mbps

UBR VP

LSP

POS Interface on Router

ATM Interface

On Switch


Capitalizing on new standards for atm to mpls convergence

ATM to MPLS Interworking Standards: Solving Signaling ScalabilityNew Standards Progress with Virtual Trunks

New Standards

progress:

Virtual Trunk Concept

  • Solution:

  • Perform VP bundling to aggregate ATM VPs into an ATM Virtual Trunk before sending to the LER.

  • Simplify scaling of ATM VPs across MPLS core.

    • Groom 1000’s of VCs into virtual trunks for transport across MPLS core.

Aggregation of 1000’s VPs into Virtual trunks with automatic provisioning

CBR VP

1 mbps

VBR rt VP

5 mbps

10 mbps

VBR nrt VP

30 mbps

UBR VP

Virtual

Trunk

LSP

POS Interface on Router

ATM Interface

On Switch


Lucent juniper multiservice mpls core solution delivering atm qos and slas

Lucent/Juniper Multiservice MPLS Core SolutionDelivering ATM QoS and SLAs

  • Bundles ATM QoS priorities into single Trunk VPN label/Pseudo Wire

  • QoS treatment of traffic Emulates ATM

  • Facilitates bandwidth sharing amongst service classes

  • Maintains cell loss priority

QoS Flows Based

on EXP Bits

MPLS Label

CBR

8

20

3

1

VBR rt

LABEL

Exp

TTL

S

VBR nrt

32 bits = 4 bytes (octets)

Trunk VPN Label

(Pseudo Wire)

ABR/UBR

PE to PE E-LSPs

(PSN Tunnel)

Queues

POS Interface (Router)


Capitalizing on new standards for atm to mpls convergence

Frame/ATM Edge

Frame/ATM Edge

Frame/ATM Edge

IP/MPLS Core

Frame/ATM Edge

Frame/ATM Edge

Frame/ATM Edge

Frame/ATMEdge

Frame/ATM Edge

ATM to MPLS Interworking Standards: Routing Scaling IssuesExisting Networks Require Full Mesh ATM Routing Across MPLS Core

ATM switches support a limited number of adjacencies, limiting scalability.

  • Issue: Connecting large numbers of ATM sub networks over an MPLS core.

    • Must transport ATM routing information through an MPLS network.

    • ATM switches need to maintain routing adjacencies with all other ATM switches through MPLS core.


Capitalizing on new standards for atm to mpls convergence

Frame/ATM Edge

MP-BGP distributes

ATM address

Information

Frame/ATM Edge

Frame/ATM Edge

IP/MPLS Core

Frame/ATM Edge

Frame/ATM Edge

Frame/ATM Edge

Frame/ATMEdge

Frame/ATM Edge

ATM to MPLS Interworking Standards:Solving Routing Scaling IssuesNew Standards Progress with MP-BGP

  • Solution: Use Multiprotocol-Border Gateway Protocol (MP-BGP) for ATM address reachability information

  • Enables ATM network to import and export ATM address information through the MPLS core by exchanging information with a single edge router

    • Increases scalability by reducing ATM adjacencies without sacrificing full connectivity

    • Utilizes MP-BGP’s proven scalability for IP VPNs and Internet routing

    • Simplifies administration by leveraging one protocol (BGP) for multiple services

New Standards progress:

MP-BGP to distribute

ATM routing information


Capitalizing on new standards for atm to mpls convergence

Lucent - Juniper Partnership Unified Standards Efforts, Unified Solutions

MPLS/FR Alliance Distributed Model for ATM to MPLS Interworking increases scalability and manageability by:

  • Separating ATM signaling from the MPLS network to achieve higher scalability

  • Giving providers a solution for aggregating ATM traffic over the MPLS network

  • Distributing ATM address information in a scalable fashion

    Release 2 of Multiservice MPLS Solution architected to fully realize ATM to MPLS interworking standards

  • Solution also allows service providers to maintain standard ATM and MPLS service restoration and fault management tools

    Lucent and Juniper together will promote progress to other standards bodies including IETF, ITU-T for adoption

Lucent –Juniper Standards Based ATM to MPLS Interworking

MP-BGP for ATM

routing information

Distributed Architecture

FR, ATM Services

FR, ATM Services

Virtual Trunk

T-series

T-series

M320

CBX 500

CBX 500

M/E

M/E

CBX 3500

GX 550

IP Services

IP Services

EthernetServices

EthernetServices

Lucent OSS Software


Poll 2 what is your top concern with respect to deploying standards based atm to mpls

Poll #2: What is your top concern with respect to deploying standards-based ATM to MPLS?

  • Preserving quality of service over the MPLS core

  • Scaling ATM connections over the MPLS core

  • Dynamic signaling between the ATM and MPLS networks

  • Preserving network reliability end to end


Standards enable convergence today converge the best of both worlds to profit today and tomorrow

Standards Enable Convergence Today Converge the Best of Both Worlds to ProfitToday and Tomorrow

  • Standards minimize OPEX by preserving established network management processes; reduces incremental CAPEX

    • MPLS/FR Alliance Distributed Model maximizes the utility of existing assets and separates ATM and MPLS operational boundaries.

  • Standards maintains QoS in a scalable fashion through the IP/MPLS core; preserves operational parity between ATM and IP/MPLS domains

    • Use of Virtual Trunks improves network scalability and simplifies the provisioning process.

  • Standards ensure reliable control plane operations by standardizing on a common protocol for address distribution

    • Advancements in standards such as MP-BGP solve routing scalability issues.


Questions answers

Questions & Answers

John Sax, CTO, Data Networking Group, Lucent TechnologiesDr. Kireeti Kompella, Distinguished Engineer, Juniper NetworksMark Bieberich, Program Manager, The Yankee Group


  • Login