On Thu, Apr 14, 2022 at 08:58:53PM +0200, Toke Høiland-Jørgensen wrote: > Yeah, I do. He's also one of the maintainers of the routing code, so > definitely the right person to Cc on this (explicitly Cc'ing maintainers > makes sure they see your email as not everyone follows netdev > rigorously).
Kk :) > Ah, okay, that's interesting. Playing around with your examples, on my > laptop the performance goes from ~90k/s to ~1k/s when doing just a > single 'ip -6 route show table 1337'. The dump itself takes between 5-10 > seconds, so with the 30-sec interval in babeld I guess the periodic dump > can coincide with the update at random. > > Side note: why is bird replacing all the routes in the first place? :) That is a good question, bird should really be able to see that the route is already installed and just don't bother. I see this del/add behaviour even when bgp is otherwise nice and converged though so I assumed bird is just like this. As I said before it always triggers when I (re)start babeld but I can't see anything obvious in the log even with debug on as to why. Particularily I don't see any bgp state events so the sessions should be fine but for some reason it decides to churn everything anyway. > > I'm currently working on babel ECMP support in bird though maybe I'll > > have a stab at RTT after that. > > On the subject of ECMP and Babel, you may want to read this thread: > https://mailarchive.ietf.org/arch/msg/babel/i4tqsRIL3DS9e22GJ0QuoMef-P0/ > > I.e., it's not just a matter of writing the code we'll also need to > define the semantics in the spec. Just so you know what you're getting > yourself into ;) Interesting thread, thanks. I think for my use-case the loop avoidance point is moot though since I'm mainly interested in using this on endpoints, not routers. So perhaps calling this ECMP is not the right nomenclature? --Daniel _______________________________________________ Babel-users mailing list [email protected] https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/babel-users
