After experiencing a sluggish network today, I ran Wireshark on my PC at work for an hour and found 37% of all packets were vrrp advertisements to multicast address 224.0.0.18. Should my PC be getting these multicast packets? Advertisement interval ...

On point to point links in our MPLS network I'm seeing anywhere from 100 million to a billion "giants" on the interface/day. Is this acceptable in an mpls network with a 9214 mtu. Are the giants discarded or fragmented? A Cisco TAC recommendation wa...

We have a DS3 Spa 2XT3/E3 in 6509/mpls router to handle frame-relay to 130 remote routers. Spa card serial and sub-interfaces have a delay of 200 usec and remotes have a delay of 20,000 usec. Is this a delay mis-match? It seems to work but the route ...

Any advice on how to use the sh ip route profile command. Can't find much guidance on this little known command. Even my local CCIE was unfamiliar with it. The command reference definitions suggest there are a lot of routing table updates going on i...