Cisco 2950 Software Configuration Guide - Page 391
Reconfirming VLAN Memberships, Changing the Reconfirmation Interval, Step 4
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Chapter 17 Configuring VLANs Configuring VMPS Command Step 4 switchport access vlan dynamic Step 5 Step 6 Step 7 end show interfaces interface-id switchport copy running-config startup-config Purpose Configure the port as eligible for dynamic VLAN membership. The dynamic access port must be connected to an end station. Return to privileged EXEC mode. Verify your entries in the Operational Mode field of the display. (Optional) Save your entries in the configuration file. To return an interface to its default configuration, use the default interface interface-id interface configuration command. To return an interface to its default switchport mode (dynamic desirable), use the no switchport mode interface configuration command. To reset the access mode to the default VLAN for the switch, use the no switchport access interface configuration command. Note When you configure a dynamic access port by using the switchport access vlan dynamic interface configuration command, the port might allow unauthorized users to access network resources if the interface changes from access mode to trunk mode through the DTP negotiation. The workaround is to configure the port as a static access port. Reconfirming VLAN Memberships Beginning in privileged EXEC mode, follow these steps to confirm the dynamic port VLAN membership assignments that the switch has received from the VMPS: Step 1 Step 2 Command vmps reconfirm show vmps Purpose Reconfirm dynamic port VLAN membership. Verify the dynamic VLAN reconfirmation status. Changing the Reconfirmation Interval VMPS clients periodically reconfirm the VLAN membership information received from the VMPS. You can set the number of minutes after which reconfirmation occurs. If you are configuring a member switch in a cluster, this parameter must be equal to or greater than the reconfirmation setting on the command switch. You must also first use the rcommand privileged EXEC command to log into the member switch. Beginning in privileged EXEC mode, follow these steps to change the reconfirmation interval: Step 1 Step 2 Command configure terminal vmps reconfirm minutes Step 3 end Purpose Enter global configuration mode. Enter the number of minutes between reconfirmations of the dynamic VLAN membership. Enter a number from 1 to 120. The default is 60 minutes. Return to privileged EXEC mode. 78-11380-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 17-29
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