I have a very strange problem on our network. we have about 72 vlans configured on our 6515 core switches that acts as distribution and core. Each vlan has different /23 subnet and which are distributed to 3750 access switches. These access switches are uplinked to the core switches via fiber trunk lines.
For no reason at all, or at least no logged messages anywhere, one vlan subnet just can not connect anywhere. The PC's connected to this access switch can obtain correct dhcp address but cannot ping anything including the gateway.
Any help will greatly appreciated. Config pertaining to that vlan is attached.
Any help would be greatly appreciated.!