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BN Discovery via ISIS

draft-dhody-pce-bn-discovery-isis-00.txt. BN Discovery via ISIS. Dhruv Dhody ( dhruvd@huawei.com ) Udayasree Palle ( udayasreepalle@huawei.com ). Motivation for this work. Discover Boundary Node (BN) and their domain information ABR (Area Boundary Router) and area

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BN Discovery via ISIS

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  1. draft-dhody-pce-bn-discovery-isis-00.txt BN Discoveryvia ISIS Dhruv Dhody (dhruvd@huawei.com) Udayasree Palle (udayasreepalle@huawei.com) 78th IETF @ Maastricht

  2. 78th IETF @ Maastricht Motivation for this work • Discover Boundary Node (BN) and their domain information • ABR (Area Boundary Router) and area • ASBR (Autonomous system boundary router) and AS • Existing mechanism are incomplete and complicated • BN-discovery is designed to be light and easily extensible

  3. 78th IETF @ Maastricht Application • BRPC [RFC5441] requires Path Computation Element (PCE) [RFC4655] to be aware of BNs for inter-domain path computation. • Enabling PCE to dynamically learn BNs and their neighbor domains. • Help PCE to generate NEIG-PCE-DOMAIN Sub-TLV [RFC5089]

  4. 78th IETF @ Maastricht BND TLV and Sub-tlv BND TLV 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // sub-TLVs // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ BN-Address sub-TLV +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type = 1 | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | address-type | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // BN IP Address // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

  5. 78th IETF @ Maastricht BND TLV and Sub-tlv BN-DOMAIN sub-TLV +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type = 2 | Length | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Domain-type | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ // Domain ID // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ • BND TLV carried within an IS-IS Router Capability TLV • Flooding scope can be controlled to L1 area, L2 sub-domain, entire ISIS routing domain.

  6. 78th IETF @ Maastricht Next Steps • Standard representation of Domain Sequence across area & AS. • BND can be utilized in inter-layer scenario.

  7. Questions & Comments? 78th IETF @ Maastricht

  8. Thanks! 78th IETF @ Maastricht

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