[求助]思科交换机之间CDP 连通问题
我这里有两台交换机，cisco 4506和2960，在45上show cdp neighbor 可以看到2960，但在2960上看不到4506，vtp信息也学不到。
4506交换机：
Catalyst4506#show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone
Device ID Local Intrfce Holdtme Capability Platform Port ID
12F Gig 2/4 122 S I WS-C2960-4Gig 0/2
Cisco3550-3 Gig 2/3 128 S I WS-C3550-4Gig 0/1
Cisco3550-2 Gig 2/2 138 S I WS-C3550-4Gig 0/1
Cisco3550-1 Gig 2/1 137 S I WS-C3550-4Gig 0/1
2960交换机：
12F#show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone
Device ID Local Intrfce Holdtme Capability Platform Port ID
12F#
请问会是什么问题呢，谢谢。[]
