Avalanche (restart) has its own set of problems - including overwhelming either the HTTP server, SSP or registrar. (In a draft, we've made proposals how to address this in some cases, as long as the UA can detect that it is likely part of an avalanche.) As we've seen from the SIP overload discussion, you can't rely on the "natural" throttling of the server to nicely space out requests - the whole thing is much more likely to collapse in a heap, so that no useful work gets done. This affects registration, subscription and retrieval more or less equally. Henning |
_______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf