On Sun, Mar 28, 2010 at 17:38, Narbik Kocharians <[email protected]> wrote: > Marko, > > When you tested this feature, did you test the latency, like when the > primary comes up after a failover and the back up letting go of the routes? > OR when the B/up actually takes over? > > I tested this feature when it first came out in 12.3 T something code (I > don't remember) and i had to play around with timers to speed up > convergence, and even then, it was kind of slow to converge between PRI to > B/up and or from B/up to Prim failover, and having the routers inject the > routes with the correct next-hop. > I will try to find that lab (Don't hold your breath, it was a long time > ago), But when i tested it, the second BGP detected an adjacency change, it > terminated the session, but this termination was NOT immediate (Once again, > PRI---B/up and/or B/up to PRIM and advertising the correct next-hop to the > other routers), this was between Scan intervals, and when i tried it few > times to see the range, i noticed that once awhile it took 15 seconds to 30 > seconds.
Let us not mix and match things here going into fine-tuning reconvergence times. When neighbor goes down, router will send updates to its peers with the new best-path, if it has one. That was not the question in this thread. -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert YES! We include 400 hours of REAL rack time with our Blended Learning Solution! Mailto: [email protected] Telephone: +1.810.326.1444 Fax: +1.810.454.0130 Web: http://www.ipexpert.com/ _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
