GELS Report

1
GELS Report

• Loa Dimitri

2
Problem Statement

• GMPLS controlled Ethernet
• GMPLS control plane for Ethernet .1ad environment
  (with S-VID support)
• Single operator environment
• Base objectives
• Source routing
• Traffic engineering (P2P and P2MP TE LSPs)
• Recovery

3
GELS Approach

• Like CCAMP for SONET/SDH
• leave data plane untouched
• gt no impact on the Ethernet data plane and
  define GMPLS-based control plane

4
GELS Approach

• Differences b/w SONET/SDH and Ethernet approach
• Technology
• Ethernet frame forwarding
• SONET/SDH circuit switched
• Label
• Ethernet label encoded in data plane and
  distributed using control plane
• SONET/SDH label control plane only (timeslot)
• Maturity
• Ethernet evolution in parallel with // Ethernet
  evolutions at IEEE
• SONET/SDH foundation (80-90) present ten years
  before starting GMPLS work (00)

5
Status

• Active mailing list (200 subscriptions)
• Active DT discussion (unofficial meetings
  social)
• Carrier involvement and interest
• Slowly converging on What needs to be done!

6
Status
Problem Statement

• GMPLS controlled Ethernet
• unify CP operations (source routing, TE)

Framework doc. draft-dimitri-gels-framework-00.tx
t

• 1. Domain-wide label DA MACS-VID (IVL fwding)
• 2. Link-local label S-VID translation (swapping)

Label encoding
Decoder Ring doc.
GMPLS impact

• Signaling and related
• Routing and related

Decoder Ring doc. To be completed Re-spin ongoing
7
Status
Problem Statement

• Common (are we solving the same problem ?)

Label encoding

• Different solutions to the same problem

1
2
Common (profiles)
GMPLS control
or
1
2

8
Approach

• Complete GMPLS CP impact
• Label scheme (domain vs link local) impact on
  GMPLS protocols operations
• Signaling RSVP-TE
• Routing IGP (IS-IS, OSPF)
• Alignment
• OK were done (common trunk w/ profile)
• NOK see how far we can go (from initial
  objectives)

9
Next Steps (documents)

• Re-spin
• Carrier requirement
• Framework
• ltdraft-dimitri-gels-framework-00.txtgt
• Decoder Ring
• ltdraft-dimitri-gels-solution-eval-00.txtgt
• complete GMPLS control plane impact