I remember reading once that if you span a VLAN (instead of a port) you are likely to get duplicate ACKs and other problems when taking a sniffer trace (either WireShark or SnifferPro, doesn't matter). Cisco has an explanation of that problem - does...

We recently installed an HWIC-4ESW module in a 2821 router. The module shows up in "show inventory" and it shows us in "show diag" but the additional FastE ports do NOT show up in "show running-config". IOS is c2800nm-ipbase-mz.124-3i.bin.Has anyon...

I have an Avaya and an Alcatel switch that I would like to connect via CEoIP.For some background, we initally configured (successfully) CEoIP between two Avaya switches. Calls were clear.Now I have two 2821 routers setup, one connected to the Avaya ...

We are getting ready to set up some remote sites in the People's Republic of China. The circuits will be Frame Relay, but we always configure BRI circuits for dial backup in case of circuit failure. We already have many sites throughout Asia and Ho...