> I think i had tuned down the RIP hello interval. Impossible. It was the Update interval that you had tuned down.
> I probably would prefer not to use one of the real routing protocols, but > something lightweight. RIP is a stupid routing protocol but just to > announce aliveness of host interfaces it is pretty ook. RIP(ng) has a major flaw: it doesn't have explicit Hellos. Reachability is established by receiving Update packets, which have a size that is proportional to the number of advertised prefixes. Modern routing protocols (at least IS-IS, OSPF, EIGRP and Babel) have an explicit reachability sub-protocol, that consists of explicit Hello exchanges. This allows sending Hellos much more often than you send Updates or topology information. For example, in Babel a packet containing just a single, unextended Hello has a payload of just 12 bytes, independent of the size of the network. (In principle, you could hack a Hello protocol into RIP by interpreting empty RIP packets as reachability indications. But that would no longer be RIP, right?) > Of course something defined specific for this purpose (host address > aliveness or the like) would be most clean IMHO. I believe that BFD (RFCs 5880 and 5881) is the IETF Standard Track reachability detection protocol. -- Juliusz _______________________________________________ homenet mailing list [email protected] https://www.ietf.org/mailman/listinfo/homenet
