We run cisco 2801 connected to catalyst 3560 with Fa0/0 and to another router with Fa0/1 and sometimes (often enough- once per 2-3 weeks) we have following problem:
there are much throttles on fa0/0 , users complains about bad connectivity, fragmented packets do not pass.
Only way to solve problem we found is to reload 2801, even fa0/0 shutdown/no shutdown doesn't help.
There also several other 2801 with almost the same configuration, but connected to catalyst 4500 or 2960, there is no such problem.
Could you tell me what can it be? How can we find what is wrong?