Generalized MPLS Signaling for Layer-2 LSPs

1
Generalized MPLS Signaling for Layer-2 LSPs

• draft-papadimitriou-ccamp-gmpls-l2sc-lsp-00.txt
• D.Papadimitriou (dpapadimitriou_at_psg.com)
• D.Brungard (dbrungard_at_att.com)
• M.Vigoureux (martin.vigoureux_at_alcatel.fr)

2
Why ?

• Goal RFC 3473 support of L2SC LSPs
• L2 switching architecture X,L2SC,,
  L2SC,L2SC,,L2SC,X where X Any (in
  particular, PSC)
• Layered switching architectures (FA LSPs)
  L2SC,Y,,Y,L2SC where Y Any (in particular,
  TDM or LSC)
• Non-Goal PW architecture ( provisioned overlays
  over PSN)

3
L2SC LSP and Setup Methods

• L2SC LSP gt tunnel for Ethernet payload
  transport w/o necessarily using MPLS PWs and
  other extended p2p LDP signaling
• Methods for e2e LSP Setup
• direct e2e LSP setup
• LSP nesting (FA-LSP in network)
• LSP stitching (LSP Segment in network)
• LSP shuffling ( GMPLS VPN)

4
LSP Nesting Stitching/Shuffling
I/f
Ethernet
6
9
3
1
7
4
8
2
5
1
3
6
9
L2SC,X
X,L2SC
Y,L2SC
L2SC,Y
Y,Y
Nesting (FA)
FA-LSP (ex TDM LSP)
Ethernet LSP
2
4
7
8
Ethernet LSP
Ethernet LSP
Ethernet LSP
Stitching
Ethernet LSP
Shuffling
5
What do we need ?

• Not that much since max re-use of existing
  GMPLS RFCs
• Get agreement on GPIDs e.g. GFP, X.86
• Get agreement on label semantic(s) e.g. Port,
  Flow, VLAN
• Get agreement on bandwidth encoding (any
  enhancement from current TSPEC ?)
• gt Support from the working group to refine GMPLS
  procedures for L2SC LSPs ?