This draft presents extension needed for isis to advertise BIER information with in a bier domain and its subdomains. This information can be used to build a Bit Index Forwarding Table for BIER, which in order is used for forwarding multicast packets with in a BIER domain or subdomain. The ISIS extension BIER sub-tlv carries the information for BIER sub-domain that the router participates in. This sub-tlv includes multiple sub-sub-tlvs with label range and a bit string length for certain.
Working Group Summary
The draft has been well received. There has been discussion only recently brought to the mailing list about changing the length of
the BAR field from 8 to 16 bits for future-proofing. IF there is WG consensus on this, I expect an update before the IESG telechat
and will pass the technical change through a 1 week WGLC before final approval.
based on the IETF discussions there are implementation of this draft and/or strong roadmap commitment from other vendors.
Hooman Bidgoli is the shepherd and Alvaro Retana is the Area Director