My core has created 10 vlans, my edge switch learn all of them through the trunk link. But there is 1 vlan not working at all. servers place in this VLAN is not pingable to core layer 3 interface, servers are not pingable to other servers within same vlan as well. So i suspect its a layer 2 problem.
when i do a show vtp status on the problematic edge switch:
MOM-SVR5#sh vtp statius us
VTP Version : 2
Configuration Revision : 33
Maximum VLANs supported locally : 1005
Number of existing VLANs : 18
VTP Operating Mode : Client
VTP Domain Name : MOMSVRFM
VTP Pruning Mode : Enabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x8E 0x30 0x39 0x41 0xAD 0x49 0x62 0x4E
Configuration last modified by x.x.x.x at ^@^@:^@^@:^@^@
the date shows funny charactor which i suppose corruption to the vlan.dat file.
After i delete the file, when it relearn the VTP info and construct a new VLAN.dat. the problem still persists.
My solution is copy the vlan.dat from another similar model switch to this switch to resolve it.
But what causes it? any expert to advice??