Cisco WS-C2960-24TT-L Software Guide - Page 118
Management VLAN, Management VLAN window.
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Planning a Switch Cluster Chapter 5 Clustering Switches Management VLAN Communication with the switch management interfaces is through the command-switch IP address. The IP address is associated with the management VLAN, which by default is VLAN 1. To manage switches in a cluster, the command switch, member switches, and candidate switches must be connected through ports assigned to the command-switch management VLAN. If you add a new, out-of-box switch to a cluster and the cluster is using a management VLAN other than the default VLAN 1, the command switch automatically senses that the new switch has a different management VLAN and has not been configured. The command switch issues commands to change the management VLAN of the new switch to the one the cluster is using. This automatic VLAN change only occurs for new, out-of-box switches that do not have a config.text file and that have no changes to the running configuration. For more information, see the "Discovery of Newly Installed Switches" section on page 5-11. You can change the management VLAN of a member switch (not the command switch). However, the command switch will not be able to communicate with it. In this case, you will need to manage the switch as a standalone switch. You can globally change the management VLAN for the cluster as long as each member switch has either a trunk connection or a connection to the new command-switch management VLAN. From the command switch, use the cluster management vlan global configuration command to change the cluster management VLAN to a different management VLAN. Caution You can change the management VLAN through a console connection without interrupting the console connection. However, changing the management VLAN ends your CMS session. Restart your CMS session by entering the new IP address in the browser Location field (Netscape Communicator) or Address field (Microsoft Internet Explorer), as described in the release notes (http://www.cisco.com/univercd/cc/td/doc/product/lan/c2900xl/index.htm). Note Activity synchronization is only valid if your command switch and member switches are running Release 12.0(5)XU and later. Earlier releases of the software require that switches be upgraded one at a time. Note If your cluster includes members that are running a software release earlier than Release 12.0(5)XP, you cannot change the management VLAN of the cluster. If your cluster includes member switches that are running Release 12.0(5)XP, you need to change their management VLAN before you use the Management VLAN window. For more information about changing the management VLAN, see the "Management VLANs" section on page 8-3. 5-18 Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide 78-6511-08