Specifications

CHAPTER 2

VLAN Implementation

Verifying and Monitoring VTP

To get basic information about the VTP configuration, use show vtp status. The example shows the default settings:

# show vtp status

VTP Version : 1

Configuration Revision : 0

Maximum VLANs supported locally : 1005

Number of existing VLANs : 5

VTP Operating Mode : Server

VTP Domain Name :

(config)#

VTP Pruning Mode : Disabled

VTP V2 Mode : Disabled

VTP Traps Generation : Disabled

MD5 digest :

Adding a New Switch to a VTP Domain

Adding a new switch in client mode does not prevent it from propagating its incorrect VLAN information. A server

synchronizes to a client if the client has the higher configuration revision number. You must reset the revision number

back to 0 on the new switch. To be safe, follow these steps:

Step 1. With the switch disconnected from the network, set it as VTP transparent and delete the vlan.dat file from its

flash memory.

Step 2. Set it to a fake VTP domain name and into client mode.

Step 3. Reboot the switch.

Step 4. Configure the correct VTP settings, such as domain, password, mode, and version.

Step 5. Connect the switch to the network, and verify that it receives the correct information.

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CCNP SWITCH 642-813 Quick Reference by Denise Donohue

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