SV: Minutes routing-wg RIPE 47
Henrik.Villfor at teliasonera.com Henrik.Villfor at teliasonera.com
Tue Apr 6 14:57:51 CEST 2004
Hello all, just a couple of clarifications on the questions on my talk as they were quite specific. > > * Operator Experience from IS-IS Convergence Tuning > (Henrik Villfoer) > > This study is done on the TeliaSonera network. > Motivation for such a > study is to get a fast convergence time, around 1 sec, for time > sensitive > new IP services and find the limits of the protocol, > IS-IS. Mostly > Cisco products are used. > > Questions: > > "How many LSP do they have?" More than a hundred. This was a question on a diagram of an "effect on flooding indication" measurement. One of the two curves (the before-curve) contained only about 35 LSPs and the question was how many LSPs were measured in the other. > > "Suggestion tune the closes-max-time." This was a proposal from Clarence, I beleive, to tune the process-max-time since it should give smaller maximum flooding delays (among other things). > > "It would be more interesting if there would be more info about > flooding loops." This was a comment on the convergence measurement we perform since we actually only measure the number of test packets lost. Systematically inspecting the TTL would tell us if we had transient loops. I could do naught but agree but complemented with the information that manual inspection of a number of cases has shown that loops do exist but are very short lived and uncommon. Cheers, Henrik.