61st IETF Washington DC November 2004

IP/MPLS - GMPLS interworking in support of IP/MPLS to GMPLS migration

draft-oki-ccamp-gmpls-ip-interworking-04.txt

Deborah Brungard: dbrungard@att.comJean-Louis Le Roux: jeanlouis.leroux@francetelecom.com

Eiji Oki: oki.eiji@lab.ntt.co.jpDimitri Papadimitriou: dimitri.papadimitriou@alcatel.beDaisaku Shimazaki: shimazaki.daisaku@lab.ntt.co.jp

Kohei Shiomoto: shiomoto.kohei@lab.ntt.co.jp

61st IETF Washington DC November 2004

Motivation

• Current situation: Legacy MPLS deployment for converged service

• Evolution– GMPLS-based network for traffic demand– New features developed in GMPLS

• Objective: Interwork between MPLS and GMPLS

• Motivation– Coexistence of MPLS and GMPLS– Migration from MPLS to GMPLS (in Control plane)

61st IETF Washington DC November 2004

Broadband service price comparison

5.37 5.00

4.42 3.98

3.88 3.53

3.36 3.25

2.71 2.56

2.21 1.27

1.15 0.25

0.09

0 1 2 3 4 5 6

JapanKorea (Rep.)

BelgiumHong Kong,

SingaporeMacao,

New ZealandCanada

NetherlandsUnited

SloveniaIsrael

GermanyLithuaniaBahamas

100 kbps price (US$)

61st IETF Washington DC November 2004

Traffic on IXs in Japan

90

80

70

60

50

40

30

20

10

0

(Gbps)

Traffic on IXs in Japan

(Ref.) Traffic on IXs in U.K.

Source: Excerpt from report from Study Group on Next Generation IP-based Info-communications Infrastructure set up by MIC

20032002200120001999

61st IETF Washington DC November 2004

Summary of I-D

• Difference between MPLS and GMPLS wrt Interworking– Architecture (C/D separation, Bidirectional,

P&R)– Routing (GMPLS-TE-Opaque-LSA)– Signaling (New objects, message)

• Mechanisms (M-G-M)– Routing: TE link, FA, Segment stitching– Signaling: Nesting, Contiguous, Stitching– Discovery of GMPLS signaling capability

61st IETF Washington DC November 2004

Major Changes

• Mechanism M-G-M scenario is refined.

• G-M/M-G scenario is added.

MPLS NW GMPLS-based NW MPLS NWG1 G3

G4 G6

G2

G5

MPLS NWG1 G3

G4 G6

G2

G5

GMPLS-based NW

61st IETF Washington DC November 2004

Remaining Issues• Document restructuring

– Move Te-related stuff (4.1.2) to MRN docs.• Develop G-M-G, M-G/G-M mechanisms

• Define Interwork & Migration– Interwork: coexistence MPLS and GMPLS, MRN is

referred for TE mechanism.– Migration: Converge to GMPLS-based networks

• Five Interworking scenarios– M-G-M (PSC, non PSC)– G-M-G (PSC, non PSC)– G-M/M-G (PSC)

61st IETF Washington DC November 2004

Next Actions

• Adopt as WG document

• Requests for review/feedback