Hello everyone,

yes, I do support the discussion and development of a leaderless option.

As an operator I see this as the only chance to get an automatic flooding 
optimization into our network.

While reduced configuration, minimal blast radius, and ease of incremental 
deployment are key points for this, I’d also add complexity of the additions to 
the existing protocol(s) - e.g. more TLVs and sub-TLVs - and the need for 
additional state in the routing protocol as serious obstacles to implementing 
anything based on RFC 9667. In our network, this situation has even worsened 
since last year after a couple of IGP related incidents.

Best regards, Martin


Von: Acee Lindem <[email protected]>
Datum: Montag, 18. November 2024 um 15:42
An: lsr <[email protected]>
Betreff: [Lsr] Consensus Call on LSR WG work on "Leaderless Flooding Algorithm 
for Distributed Flood Reduction to allow reduced configuration, minimal blast 
radius, and ease of incremental deployment"

During the IETF 121 LSR meeting, we had a very good discussion of 
https://datatracker.ietf.org/doc/draft-ietf-lsr-distoptflood/

While the CDS flooding reduction algorithm itself was interesting, the main 
area of the discussion was distributed flooding reduction algorithm selection 
and its configuration and deployment.

Today, we have RFC 9667 “Dynamic Flooding on Dense Graphs” which provides 
leader-based supporting both centralized and distributed flooding reduction 
algorithm selection. With the mechanism, an area leader is selected from among 
the OSPF routers in the area supporting flooding reduction and this leader 
selects the flooding reduction algorithm for the area.

The question to be answered by this consensus call is whether or not we want to 
work on an additional mechanism just for distributed flooding reduction to 
allow for reduced configuration, minimal blast radius, and ease of incremental 
deployment.

Please send your support or opposition to this list before Tuesday, December 
3rd.

As WG Co-Chair,
Acee
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