How to generate ACS cert with never expired or longer period. I using ACS ver4.0 and found out with auto generated cert with default 1 year period.

That is one Cisco 4950 switch configured with VTP domain, but when I connect with new CIsco switch with the network, the new switch will learn VTP from the 4950 switch. The question here, I not configured any domain or VTP password on the new switch ...

As I know the vtp by default was enable so can it be disable? Coz I trunk to non-cisco switch will so error as "vtp domain mismatch" but the trunk is working.

How to load balance (if can) or failover two Fiber channel like as below?interface GigabitEthernet0/1 switchport mode trunk channel-group 1 mode active channel-protocol lacp! interface GigabitEthernet0/2 switchport mode trunk channel-group 1 ...

How to configure on Cisco to link with Nortel switch with 802.3ad (multi channel trunking)?I have a triangle setup running on two Nortel core switches with active-active mode, and the Cisco floor switch connect back both switches with multi channel ...