Hi,
I have a 3750 stack that connects to a 3560 at another site. The are both on the inside of our network and basically a switch to switch connection. The switchports are in vlan 901. When I telnet from the 3750 to the 3560 and attempt to change the 3560's vlan 1 ip address I lose connectivity and can only get it back by going to the site and consoling into the 3560 to change the vlan 1 ip address back. The 3750 vtp mode is server and the remote 3560 is vtp transparent. Any ideas why this is happening?
Thanks,
Len.
Solved! Go to Solution.
Hi Len
The reason this is not working is because the vlan1 is not forwarded between the switches.
As I described in my previous contribution You have to have vlan1 forwarded between the switches.
The config You have now are only connecting vlan901, by making the g0/22 and g4/0/1 a trunkport and allowing vlan 1 and 901 will solve the problem.
Or You can connect a new cable between the switches and forward vlan1 that way.
Or, You can give the vlan1 interface on 3560 an ip address that is not overlapping with other neetworks.
/Mikael