Session Date/Time: 10 Nov 2023 14:30

bier

Summary

The BIER working group meeting covered several draft updates, a hackathon report, and discussions on new proposals related to source protection, DR election, and loop avoidance. Key topics included shepherding documents through the IETF process, scalability concerns with BIER-TE, and the need for practical deployments of BIER technology.

Key Discussion Points

Shepherding: The importance of volunteering as document shepherds to move drafts through the IETF process was emphasized. Several documents are in the ISG queue and require attention to address review comments.
BIER-TE Scalability: A presentation explored alternative approaches to BIER-TE using bit-string and segment-encoded explicit trees to improve scalability in large networks.
Source Protection: A draft on source protection in BIER was presented. Concerns were raised regarding its value compared to existing multicast redundancy mechanisms and whether BIER-specific solutions are necessary.
DR Election: A draft proposing a protocol-independent Designated Router/Designated Forwarder (DRDF) election mechanism using RGP was discussed as a potential alternative to PIM-based DR election.
Hackathon Report: A report on informal interoperability testing was presented, highlighting progress in forwarding and challenges in virtualized environments. Plans for more formal EANTC testing in March were announced.
Loop Avoidance: A proposal to use segment routing for loop avoidance was presented, but participants questioned whether the problem was relevant and if workarounds were needed.

Decisions and Action Items

OEM Requirements: A volunteer was found to trade shepherd roles.
BIER BFD: The document is ready for working group last call and a shepherd will be assigned.
Hybrid Performance Measurement: To reissue a last call for this document to remind people of the work.
BIER Prefix Redistribution: Needs a shepherd, Greg volunteered.
BIER Source Protection: The topic needs further discussion on the mailing list to determine if it is worth documenting.
DRDF Election: An adoption call was made to start the process of standardization.
OSPF Extensions (v2 & v3): Send the document to the LSR working group for review.

Next Steps

Authors to address review comments on documents in the ISG queue.
Continue discussion on the mailing list regarding source protection.
Continue planning for formal interoperability testing at EANTC in March.
Authors of the DRDF draft prepare for working group adoption.