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Signaling Entropy Label Capability using IGP draft-xu-mpls-el-capability-signaling-igp-00

Signaling Entropy Label Capability using IGP draft-xu-mpls-el-capability-signaling-igp-00. Xiaohu Xu (Huawei) Sriganesh Kini (Ericsson) Siva Sivabalan (Cisco) Clarence Filsfils (Cisco) IETF88, Vancouver. Motivation.

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Signaling Entropy Label Capability using IGP draft-xu-mpls-el-capability-signaling-igp-00

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  1. Signaling Entropy Label Capability using IGP • draft-xu-mpls-el-capability-signaling-igp-00 Xiaohu Xu (Huawei) • Sriganesh Kini (Ericsson) • Siva Sivabalan (Cisco) • Clarence Filsfils (Cisco) IETF88, Vancouver

  2. Motivation • [RFC6790] proposes to use Entropy Labels for MPLS traffic load-balancing and therefore defines the signaling of Entropy Label Capability (ELC) via the following label distribution protocols: • LDP • RSVP-TE • BGP • Segment Routing (SR) is a new MPLS paradigm in which IS-IS or OSPF, is used as label distribution protocols. In such scenarios, the ELC signaling mechanisms defined in [RFC6790] are inadequate. • This document defines mechanisms to signal the ELC using IS-IS or OSPF accordingly. • As for how to insert EL in the SR architecture, please refer to draft-kini-mpls-entropy-label-src-stacked-tunnels-01.

  3. Advertising ELC using IGP • Advertising ELC using OSPF • The OSPF Router Information (RI) Opaque LSA defined in [RFC4970] is used by OSPF routers to announce their capabilities. A new TLV within the body of this LSA, called ELC TLV (Type=TBD, Length=0) is defined to advertise the capability of the router to process the ELI and EL. This TLV is applicable to both OSPFv2 and OSPFv3. • Advertising ELC using IS-IS • The IS-IS Router CAPABILITY TLV defined in [RFC4971] is used by IS-IS routers to announce their capabilities. A new sub-TLV of this TLV, called ELC sub-TLV (Type=TBD, Length=0) is defined to advertise the capability of the router to process the ELI and EL.

  4. Next Steps • WG adoption?

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