The management VLAN is used to establish an IP connection to the switch from a workstation connected to a port in the VLAN. This connection supports a VSM, SNMP, and Telnet session. By default, the active management VLAN is VLAN 1, but you can designate any VLAN as the management VLAN using the Management VLAN window. Only one management VLAN can be active at a time.
When you specify a new management VLAN, your HTTP connection to the old management VLAN is lost. For this reason, you should have a connection between your management station and a port in the new management VLAN or connect to the new management VLAN through a multi-VLAN router. (See the Cisco IOS Desktop Switching Software Configuration Guide for details.)
To change the management VLAN:
Note: The management VLAN cannot be changed on Catalyst 2900 switches with 4 MB of memory; VLAN 1 must be the management VLAN for these switches.
You can delete any management VLAN except VLAN 1 by using the CLI.