We have some 3500XL switches that we need to configure vlan interfaces on, but when we type nthe command:
Switch(config)#int vlan 100
ip address **.**.**.**/24
everything looks fine. Then I do a sh run and the interface is showing as Shutdown, and if I do a "no shut" on the interface it comes up and then shuts down again.
We are using IOS version 12.0.(5.3)WC(1) on the 3500XL's.
Can someone tell me why this is happening? Does the IOS not support this config or is it the hardware is to old now?
Please help, all advise very welcome!!