[Speaking as an individual contributor.] As part of trying to push BFD WG work to conclusion, I've re-issued BFD for large packets. Our last big push on the document was back in 2019, including a first and not conclusive pass toward Working Group Last Call.
Since then, Juniper has done an initial implementation of the draft. Les might find it vindicating that part of the learnings from that implementation were that naive implementations have interesting scaling headaches. That said, the outcome of that work were mostly the same as the rest of the use of BFD: you have to work based on the scaling of your platform. Optimization work is under way to push our scaling up, but those implementation details rather than something that impacts the draft text. There are two lingering items Albert and I will be addressing in the near term, both tracked in the github I did the original work in[1]: 1. We should add YANG support for this feature. 2. There was a request from Xiao Min to consider whether work in his padding alteration proposal[2] was appropriate to directly incorporate in the large packets draft. Albert and I will be considering what such a fit would look like and work with Xiao Min on the text. Reshad had indicated back in 2019 that incorporating such changes would likely require polled support from the Working Group. We'll thus do some text for WG review prior to including it in future versions of the draft directly. -- Jeff [1] https://github.com/jhaas-pfrc/bfd-large-packets [2] https://datatracker.ietf.org/doc/html/draft-xiao-bfd-padding-alteration-00 ----- Forwarded message from internet-dra...@ietf.org ----- Date: Sun, 28 Jan 2024 13:33:51 -0800 From: internet-dra...@ietf.org To: i-d-annou...@ietf.org Cc: rtg-bfd@ietf.org Subject: I-D Action: draft-ietf-bfd-large-packets-03.txt Internet-Draft draft-ietf-bfd-large-packets-03.txt is now available. It is a work item of the Bidirectional Forwarding Detection (BFD) WG of the IETF. Title: BFD Encapsulated in Large Packets Authors: Jeffrey Haas Albert Fu Name: draft-ietf-bfd-large-packets-03.txt Pages: 7 Dates: 2024-01-28 Abstract: The Bidirectional Forwarding Detection (BFD) protocol is commonly used to verify connectivity between two systems. BFD packets are typically very small. It is desirable in some circumstances to know that not only is the path between two systems reachable, but also that it is capable of carrying a payload of a particular size. This document discusses thoughts on how to implement such a mechanism using BFD in Asynchronous mode. The IETF datatracker status page for this Internet-Draft is: https://datatracker.ietf.org/doc/draft-ietf-bfd-large-packets/ There is also an HTML version available at: https://www.ietf.org/archive/id/draft-ietf-bfd-large-packets-03.html A diff from the previous version is available at: https://author-tools.ietf.org/iddiff?url2=draft-ietf-bfd-large-packets-03 Internet-Drafts are also available by rsync at: rsync.ietf.org::internet-drafts ----- End forwarded message -----
