Just installed the FWSM in our 6513. Was reading on its configuration. It states under assigning VLANs to the FWSM under VLAN guidelines that you can not use VLAN 1. We do use VLAN 1.
To change away from VLAN 1 would require a lot of changes on our campus edge switches. By default all switch ports were in VLAN 1 when our LAN was first setup.
What is the issue with VLAN 1 and is there nothing I can do other than start the process of moving away from using VLAN 1?