Below ..
> > *From: *Robert Raszuk <[email protected]> > *Date: *Wednesday, October 13, 2021 at 1:16 PM > *To: *Acee Lindem <[email protected]> > *Cc: *"Peter Psenak (ppsenak)" <[email protected]>, "[email protected]" < > [email protected]> > *Subject: *Re: [Lsr] "Prefix Unreachable Announcement" and "IS-IS and > OSPF Extension for Event Notification" > > > > > > > How many other PEs does a BGP edge PE maximally peer with? > > > > Typically on IBGP side you will see 2-4 peers. Those are RRs. > > > > Due to no autodiscovery of BGP sessions no many people do iBGP full mesh > between PEs. > > > > Then in this case, how many PE next-hops in an IBGP domain? I guess the RR > scenario is where we are BFD limited… > I have seen networks from 10s of PEs to 1000s of PEs. Of course when we talk about say 100-200 PEs there are usually in multiple areas/domains, but this is not the hard rule. They can be in a flat one too. Not sure what you mean that we are BFD limited in RR case. First it is the RR which may trigger the withdrawal. Second infrastructure routes do not need to follow and be congruent with service routes topology. Thx, R.
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