I think you need to wait as long as hold time before the worse route is installed in the RIB.
Regards, Alexander Halim On Apr 15, 2012, at 2:17 PM, James Roc <[email protected]> wrote: > Hi All, > > I have a query regarding RIPng convergence (possibly same issue on RIPv2 as > well). A router is receiving route1 and route2 via two separate interfaces > and the router selects the route with the lowest metric, lets say route1. > > When I increase the metric of route1 to be higher than route2, the router > does not switch over to use route2. > > It notes the worse metric in a syslog message but does not swith over to > the better route: > > *Mar 1 01:50:10.595: IPv6RT0: rip cisco275, Route add > 2000:1:1:1100::/64 [*worse > metric 6,* 2] > > show ipv6 rip database output: > > 2000:1:1:1100::/64, *metric 6, installed* > Serial1/0.1/FE80::2, expires in 167 secs > 2000:1:1:1100::/64, *metric 3* > Tunnel1/FE80::C008:6FF:FE89:0, expires in 169 secs > > The only way I can get it to switch over is to clear the route table. > > On the flip side, if I modify the metric of the worse route to be the best, > then the routing table flips over automatically. > > So it looks when the metric of an installed route is increased, there is no > preemptive switch. > > However, when the metric of a worse route is decreased to be the best, then > the routing table is updated with the new route. > > Is this the expected operation of RIP? > > Cheers > James > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
