MPLS/GMPLS Interworking draft-kumaki-ccamp-mpls-gmpls-interworking-00.txt

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MPLS/GMPLS Interworkingdraft-kumaki-ccamp-mpls-g
mpls-interworking-00.txt

• Kenji Kumaki ke-kumaki_at_kddi.com
• Zafar Ali zali_at_cisco.com
• Tomohiro Otani otani_at_kddilabs.jp
• Mallik Tatipamula mallikt_at_cisco.com

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Summary of Requirements

• Deployment of GMPLS technology in existing
  IP/MPLS networks
• No upgrade in the existing IP/MPLS routers
• It is difficult to upgrade all IP/MPLS routers to
  GMPLS capable routers in SP networks due to a
  number of reasons.
• An effective way to make use of GMPLS network
  resources in IP/MPLS networks (e.g. bandwidth.)
• Signaling from the MPLS routers to remote MPLS
  routers over GMPLS networks
• An effective way to make use of both MPLS and
  GMPLS protection
• (i.e. If MPLS LSPs are protected using MPLS
  FRR,they can be used GMPLS protection.)
• MPLS/GMPLS interworking is a key for SPs.

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Summary of this I-D

• MPLS/GMPLS interworking is a near charter item.
• Needed by some SPs
• draft-oki-ccamp-gmpls-ip-interworking-05.txt
  has already
• been submitted.
• Okis draft
• describes some migration scenarios and
  requirement to migrate from MPLS to GMPLS
  networks.
• describes need of MPLS/GMPLS interworking for
  migration
• from MPLS to GMPLS networks.

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Summary of this I-D (cont.)

• This draft
• addresses MPLS-GMPLS(non-PSC)-MPLS case in
  okis draft.
• assumes to introduce GMPLS network without
  upgrading the existing IP/MPLS routers.
• describes MPLS/GMPLS interworking.
• signaling aspects
• routing aspects
• MPLS/GMPLS priority mapping
• signaling of protected MPLS LSPs
• describes some operation considerations and
  pros and cons using MPLS/GMPLS interworking.

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MPLS/GMPLS interworking

• Signaling aspects
• Static (GMPLS LSP setup is not triggered by MPLS
  signaling, e.g., pre-configured or measurement
  based, e.g., bandwidth on demand)
• Dynamic (GMPLS LSP setup is triggered by MPLS
  signaling, e.g. on-demand based on signaling
  setup request)
• Routing aspects
• Border routers advertise setup and hold priority
  of the GMPLS FA-LSP into MPLS networks.
• OSPF/ISIS extensions for link priority
  identification
• MPLS routers select a GMPLS FA-LSP during SPF
  calculation.
• MPLS/GMPLS priority mapping
• strict ERO case
• Mapping setup and hold priority of MPLS LSPs and
  GMPLS LSPs
• Signaling of protected MPLS LSPs
• Mapping protection of MPLS LSPs and GMPLS LSPs

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Signaling of protected MPLS LSPs

• In case of signaling with MPLS FRR from MPLS
  routers,
• Loose ERO case
• GMPLS LSP selection is a local decision at border
  router.
• local protection desired flag setting is used
  to select a proper GMPLS FA-LSP.
• Strict ERO case
• 11 protected GMPLS LSP is selected.

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Next Actions

• Add the terminology section and correct some
  typos
• Need more comments and feedback from WG
• Request WG to accept this I-D as a WG document