BIER Penultimate Hop Popping

Document Type Expired Internet-Draft (individual)
Author Zhaohui Zhang 
Last updated 2019-02-04 (latest revision 2018-08-03)
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Bit Index Explicit Replication (BIER) can be used as provider tunnel for MVPN/GTM [RFC6514] [RFC7716] or EVPN BUM [RFC7432]. It is possible that not all routers in the provider network support BIER and there are various methods to handle BIER incapable transit routers. However the MVPN/EVPN PEs are assumed to be BIER capable - they are BFIRs/BFERs. This document specifies a method to allow BIER incapable routers to act as MVPN/EVPN PEs with BIER as the transport, by having the upstream BFR (connected directly or indirectly via a tunnel) of a PE remove the BIER header and send the payload to the PE.


Zhaohui Zhang (

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