Cisco 2950G 24 Software Configuration Guide - Page 383
Adding a VTP Client Switch to a VTP Domain
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Chapter 15 Configuring VTP Configuring VTP Adding a VTP Client Switch to a VTP Domain Before adding a VTP client to a VTP domain, always verify that its VTP configuration revision number is lower than the configuration revision number of the other switches in the VTP domain. Switches in a VTP domain always use the VLAN configuration of the switch with the highest VTP configuration revision number. If you add a switch that has a revision number higher than the revision number in the VTP domain, it can erase all VLAN information from the VTP server and VTP domain. Beginning in privileged EXEC mode, follow these steps to verify and reset the VTP configuration revision number on a switch before adding it to a VTP domain: Command Step 1 show vtp status Step 2 Step 3 Step 4 configure terminal vtp domain domain-name end Step 5 Step 6 Step 7 Step 8 show vtp status configure terminal vtp domain domain-name end Step 9 show vtp status Purpose Check the VTP configuration revision number. If the number is 0, add the switch to the VTP domain. If the number is greater than 0, follow these steps: a. Write down the domain name. b. Write down the configuration revision number. c. Continue with the next steps to reset the configuration revision number on the switch. Enter global configuration mode. Change the domain name from the original one displayed in Step 1 to a new name. The VLAN information on the switch is updated and the configuration revision number is reset to 0. You return to privileged EXEC mode. Verify that the configuration revision number has been reset to 0. Enter global configuration mode. Enter the original domain name on the switch. The VLAN information on the switch is updated, and you return to privileged EXEC mode. (Optional) Verify that the domain name is the same as in Step 1 and that the configuration revision number is 0. You can also change the VTP domain name by entering the vlan database privileged EXEC command to enter VLAN configuration mode and by entering the vtp domain domain-name command. In this mode, you must enter the exit command to update VLAN information and return to privileged EXEC mode. After resetting the configuration revision number, add the switch to the VTP domain. Note You can use the vtp mode transparent global configuration command or the vtp transparent VLAN configuration command to disable VTP on the switch, and then change its VLAN information without affecting the other switches in the VTP domain. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 15-15
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