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MPLS-TP Next-Hop Ethernet Addressing draft-fbb-mpls-tp-ethernet-addressing-00

IETF 82 November 2011 MPLS. MPLS-TP Next-Hop Ethernet Addressing draft-fbb-mpls-tp-ethernet-addressing-00. Dan Frost danfrost@cisco.com Stewart Bryant stbryant@cisco.com Matthew Bocci matthew.bocci@alcatel-lucent.com.

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MPLS-TP Next-Hop Ethernet Addressing draft-fbb-mpls-tp-ethernet-addressing-00

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  1. IETF 82 November 2011 MPLS MPLS-TP Next-Hop Ethernet Addressing draft-fbb-mpls-tp-ethernet-addressing-00 Dan Frost danfrost@cisco.com Stewart Bryant stbryant@cisco.com Matthew Bocci matthew.bocci@alcatel-lucent.com

  2. In an MPLS-TP network without IP, how do you determine the Ethernet MAC address of the next hop? • No standard answer to this basic question • Some implementations using broadcast address or relying on static MAC configuration; both have problems • Considerations differ for point-to-point vs. multipoint Ethernet links The Ethernet Addressing Problem

  3. This draft mainly consists of text that was originally part of the MPLS-TP Data Plane Architecture (RFC 5960) and accepted by the WG, but which was taken out for scope reasons • A reserved Ethernet multicast address is allocated and dedicated for MPLS-TP point-to-point links • Use of static addressing and broadcast address still allowed, but multicast address SHOULD be used instead and MUST be supported by default in the receive path • Draft also defines an Ethernet data-set for the G-ACh Advertisement Protocol that enables unicast MAC discovery even without IP Solution

  4. Recommend WG adoption to resolve this open issue and get an early multicast address allocation as MPLS-TP implementations near completion Next Steps 82

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