When an attempt is made to add a new Virtual LAN (VLAN) interface to the Firewall Services Module (FWSM), it does not show as active. When this issue occurs the vlan xx is not assigned to this FWSM module error message appears.
Complete these steps in order to determine why the interface does not show as active:
Issue the show running-config command from the switch, review the output, and determine the interface to which the VLAN is associated. For example:
interface FastEthernetx/x description XXXX XXXX (optional) !--- displays the description given to the port logging event link-status(optional) shutdown !--- reveals whether the port is administratively shutdown speed 100 !--- displays the port speed duplex full !--- displays the duplex status no snmp trap link-status (optional) switchport switchport access vlan yy !--- displays the vlan number associated with the port switchport mode access
In this example, the port is shutdown. In such situations, try to activate the port.
The vlan xx is not assigned to this FWSM module error message appears if the FWSM is not able to download the VLANs into its database.
In order to resolve such issues, delete the VLAN and re-add it to the VLAN group.