I am trying to troubleshoot a layer 2 problem on4507. We have some non Cisco equipment we are phasing out but in the meantime it is running production services. We have four 4507s one acting as a master switch and the three others connect to it. We have multiple VLANs going to each switch. The problem is that devices on one VLAN are not working on one of the edge 4507s the other VLANs appear to be OK. I have used CDP to check connectivity, which is OK as the other VLANs work I have done a Show Mac-address-table Vlan 4 and this shows me mac addressess based on that vlan. However I cannot ping these devices and they cannot ping other devices.
Are their any ways to troubleshoot this problem understanding that these vlans are bridged and not routed. So I am looking at ways to trouble shoot from a layer 2 connectivity. The config is the same as the other two edge 4507s and they work fine.
This was a similar problem with our 4507R, what I did was I added speed nonegotiate to the gig interfaces, and On switchport trunk allowed I set mine to ALL and this clear the problems. These are just some suggestions.
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