Hi

My 4507R Switch has redundant supervisor.Each supervisor has two uplink interfaces.When i want to access the second uplink interface in active supervisor.A warning comes out that says "Interface GigabitEthernet1/2 is usable/operational only when this is the only supervisor present."

The version of 4507R is 12.1(19)Ew1.

Is the problem caused because of the low version?

Hope a kind help.Thanks!