030220PIL-WS03.ppt Copyright by NTT 2003 Page 1. IP Control Plane Generalized MPLS
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1 B.GMPLS GMPLS Page 1 Generalized MPLS GMPLS IP/MPLS L2SW TDM Lambda Fiber IP Control Plane Generalized MPLS GMPLS) IP Network IP Network -MPLS LSR - Optical Cross-Connect (OXC) -ATM switch -TDM switch -Fiber switch Page
2 B.GMPLS GMPLS TDM (Time-Division Multiplex Capable) FSC(Fiber-Switch Switch Capable) (XC, TM, ADM) (Fiber-switched photonic cross-connect) Lambda/Fiber LSP PSC (Packet-Switch Capable) Shim VCI (Wavelength-switched optical cross-connect) Page 3 LSP PSC TDM LSC FSC EXC: Electrical cross-connect (SDH/SONET) PXC: Photonic cross-connect (lambda) FXC: Fiber cross-connect (fiber) draft-ietf-mpls-lsp-hierarchy-08.txt Page
3 B.GMPLS GMPLS IP Control Plane Generalized MPLS G-MPLS) IP Network IP Network : 4 LSP Page 5 RSVP-TE Generalized label request LSP LSP encoding type Switch type GPID Bandwidth GPID Path LSC w/ Gen.Lab.Req Resv 0: Unkown 5: Asynch. Map. Of E4. 26: VT/LOVC 27: STS SPE/HOVC. 30: POS scrambling, 16 bit CRC 32: ATM map. 33. Ethernet 34: SONET/SDH 36: Digital wrapper 37: Lambda.. Generalized label request Obj. LSP encoding type Switch type 1: Packet 2: Ethernet 3: ANSI/ETIS PDH 4: Reserved 5: G.707/T : Reserved 7: Digital wrapper 8: Lambda (photonic) 9: Fiber 10: Reserved 11 Fiber Channel POS OC48 1: PSC-1 2: PSC-2 3: PSC-4 4: PSC-5 51: L2SW 100: TDM 150: LSC 200: FSC LSP encoding type = G.707/T1.105 Switch type = LSC GPID = POS-scramble, 16 bit CRC Bandwidth encoding = Mb/s draft-ietf-mpls-generalized-signaling-09.txt Page
4 B.GMPLS OSPF Interface switching capability (ISC) Encoding type PXC Link-state view ISC 1: PSC-1 2: PSC-2 3: PSC-4 4: PSC-5 51: L2SW 100: TDM 150: LSC 200: FSC Encoding 1: Packet 2: Ethernet 3: ANSI/ETIS PDH 4: Reserved 5: G.707/T : Reserved 7: Digital wrapper 8: Lambda (photonic) 9: Fiber 10: Reserved 11 Fiber Channel PSC LSC draft-ietf-ccamp-gmpls-routing-05.txt Page 7 Forwarding adjacency (FA) LSP LSP PXC Link-state view FA PSC LSC draft-ietf-mpls-lsp-hierarchy-08.txt Page
5 B.GMPLS Multiple switching capability node IP over WDM PXC Switching capability PSC+LSC Page 9 IP Layer 2SDH/SONET Lambda Fiber Packet layer IP Layer 2 SDH/SONET Lambda switch Fiber layer Lambda layer Fiber switch draft-vigoureux-shiomoto-ccamp-gmpls-mrn-00.txt Page
6 B.GMPLS VNT Traffic demand FA Forwarding adjacency r1,1 r1,2 Λ r1, n r 2,1 r 2,2 Λ r 2, n Switching capability Μ Μ Ο Μ LSP r n,1 r n,2 Λ r n, n LSP FA Current VNT P1,1 P1,2 Λ P1, n PSC-FA plane P2,1 P2,2 Λ P2, n Μ Μ Pn,1 Pn,2 Λ Ο Μ Pn, n LSC-FA plane PSC-FA PSC-LSP New VNT P1,1 P1,2 Λ P1, n P2,1 P2,2 Λ P2, n Μ Μ Pn,1 Pn,2 Λ Ο Μ Pn, n PSC-LSP LSC-FA Page 11 VNT VNT VNT LSP VNT VNT VNT LSP VNT Old VNT New VNT Page
7 VNT B.GMPLS LSP setup for increasing traffic New lambda-lsp is set up so that multi-hop packet LSPs over the congested lambda-lsp (> T upper ) can get routed. LSP teardown for decreasing traffic Lambda-LSP is torn down if its traffic is decreasing (< T lower ). Increasing traffic Decreasing traffic Page 13 LSP Node #4 Node #2 Packet-layer Node #3 #1 Lambda-LSP54 dormant #6 Packet-LSP26 Packet-LSP35 Packet-LSP26 Packet-LSP35 #5 reroute reroute Lambda-LSP54 #4 out-of-use check Lambda-layer #1 Lambda-LSP54 teardown #6 Lambda-LSP54 teardown Dormant LSP Lambda-LSP45 #5 #4 #2 #3 #2 #3 Page
8 B.GMPLS VNT Normalized network cost Fixed topology Dynamic VNT Network cost reduction Traffic demand between S-D pairs, T [Mbit/s] Page 15 GMPLS MPLS PSC L2SWTDM LSC FSC LSP LSP FA PXC+ LSP Page
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