8-4
Catalyst 2950 Desktop Switch Software Configuration Guide
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Chapter8 Configuring VLANs
Assigning VLAN Port Membership Modes
Before a new switch can be added to a cluster, it must be connected to a port that belongs to the cluster
management VLAN. If the cluster is configured with a management VLAN other than the default, the
command switch changes the management VLAN for new switches when they are connected to the
cluster. In this way, the new switch can exchange Cisco Discovery Protocol (CDP) messages with the
command switch and be proposed as a cluster candidate.
Note For the command switch to change the management VLAN on a new switch, there must have been no
changes to the new switch configuration, and there must be no config.text file.
Because the switch is new and unconfigured, its management VLAN is changed to the cluster
management VLAN when it is first added to the cluster. All ports that have an active link at the time of
this change become members of the new management VLAN.
For information about the role management VLANs play in switch clusters, see the “Management
VLAN” sectiononpage5-15.
Changing the Management VLAN Through a Telnet Connection
Before you start, review the “Management VLANs” section on page 8-3. Beginning in privileged EXEC
mode on the command switch, follow these steps to configure the management VLAN interface through
a Telnet connection:
Assigning VLAN Port Membership Modes
You configure a port to belong to a VLAN by assigning a membership mode that determines the kind of
traffic the port carries and the number of VLANs it can belong to. Table 8-2 lists the membership modes
and characteristics.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
cluster management-vlan vlanid Change the management VLAN for the cluster. This ends your Telnet
session. Move the port through which you are connected to the switch to
a port in the new management VLAN.
Step 3
show running-config Verify the change.
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