Dear all,
This is to inform you that a new version of the draft
draft-ruan-spring-priority-flow-control-sid has been uploaded to the IETF
datatracker, with the link as follows:
https://datatracker.ietf.org/doc/draft-ruan-spring-priority-flow-control-sid/
This draft leverages SRv6 policy’s explicit path orchestration capabilities
to extend PFC-based flow control to cross-DC WANs, enabling tenant-isolated,
scalable flow control for RDMA/RoCEv2 traffic.
The core content includes
1. Defining a new SRv6 Endpoint behavior End.X.PFC, an enhanced variant
of the standard End.X behavior, used to identify PFC-capable interfaces in WAN
and support the precise path-based delivery of PFC backpressure frames;
2. Proposing two deployment modes for PFC backpressure signal
transmission based on SRv6: controller-pre-deployed SRv6 tunnels and
device-auto-triggered dynamic tunnel creation, to adapt to different WAN
network deployment scenarios;
Key Revisions in This Version:
In response to the discussions on the previous mail list, we have
optimized and revised the draft content, mainly including eliminating ambiguous
descriptions about the End.X.PFC behavior, and supplementing the detailed
deployment specifications of SRv6 tunnels for PFC signal transmission, to make
the technical solution more clear and operable.
Request for Attention and Discussion
Given that the flow control mechanism defined in this draft is not only
related to the SPRING working group's SRv6 technology system, but also has
potential relevance to the research scopes of RTGWG, we sincerely invite all
colleagues from the two working groups to pay attention to this draft, conduct
in-depth discussions on the technical solution, and put forward valuable
questions and revision suggestions.
We look forward to your feedback and will actively respond to and discuss all
comments to further improve the draft.
Best regards,
RuanZheng
[email protected]
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