I was testing RIP with 4 routers daisy-chained via serial (2600 w/ 2 serial int and e0). I was having problems pinging from router to router. Some worked, some didn't. I was about to call it a night when I tried from the PCs attached to the net to the others attach to their net. That worked in all cases. Why would you be able to ping accross networks from PC to PC, but not from inside the router?
It's possible that you have routes to the end destinations, but not the networks between the routers. For instance, if you have:
It's possible to have, on RA, a route to HB, but not to RC. When RA receives traffic destined to HB, it will forwarded it along to the next hop it knows about, RB. If RB knows about the path to HB as well, then it will forward the traffic along as well.
If, however, RA has no path to the network between RB and RC, it will not even generate the traffic destined to this address, but will drop it, since it doesn't have a route to that destination. The only way to know for certain is to look at all of your routing tables, but I'd suspect a problem with route filtering, discontiguous subnets, or autsummarization.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...