Re: A nightmare of two switches

cross over cable is correct, ensure ports are set to trunking and yes
definately clear your arps..

is there comm. between two devices on the same switch?? is the fault
only between the two switches?

Flamer.

John Oliver wrote:

I have two colo cabinets with a couple of crossconnects running between
them. In one, I have two 2970s. In the other, a piece of crap Netgear
and a 2950 that was never configured.

I started seeing some weird ARP broadcasts and IP addresses in a subnet
I do not use. It's coming from the crossover that goes to the Netgear.
So, I thought i'd replace that Netgear with another 2970. I configured
it, plugged it in, let IOS boot, and moved everything from the Netgear
to the Cisco... and all hell broke loose. Oops, VLAN mismatch warnings,
and no traffic. I put every port on this new 2970 into the same VLAN as
the one I'm dealing with on the other side. Still no go. So I
configure one port on each as a trunk using ISL. That worked with a
cable dragged across the floor, but when I went back to the
crossconnect, it just never worked. The link light did change from
orange to green, but no traffic ever crossed it.

The long cable I was using is a crossover, if that makes any difference.

I gotta go back in later tonight and try again, when there isn't as much
traffic on the network. Holy God, a minute takes about 18 years when
your pager and phone are ringing off the hook! :-) Other than the ~15
seconds it takes for the ports on the 2970 to synch up... what other
gotchas are there in repacing a switch like this? Should I clear the
ARP tables on both sides as well?

--
* John Oliver http://www.john-oliver.net/ *

.

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