Configuring Vtp Snooping - Lucent Technologies Cajun P220 Operation Manual

Configuring the Cajun P550 Switch (Layer 2 & Layer 3)

Configuring VTP Snooping

VTP is a Layer 2 protocol developed by Cisco to maintain VLAN configuration
consistency among its switches. this protocol only runs over trunk ports that have
enabled either Cisco ISL or IEEE 802.1Q tagging. VTP Snooping allows a Cajun switch to
synchronize its VLAN configuration with that of a Cisco switch running VTP in the same
network. VLAN additions, deletions, and name changes made on the network's Cisco
VTP server will be automatically updated on Cajun switches that have VTP Snooping
enabled and have connectivity to the Cisco VTP server. VLAN changes made on a Cajun
switch are not automatically updated on any other switch.
Note: VTP Snooping is enabled by default. You would only need to change VTP
Snooping port settings if you wanted to disable its ability to learn VLAN
changes on the network's Cisco VTP server.
To configure switch port VTP Snooping parameters:
1. In the System Configuration section of the Web Agent, click Modules and
Ports. The Module Information dialog box opens.
2. In the Switch Ports column, click on the Switch Ports link for the module
which you want to enable VTP snooping. The Switch Ports dialog box for that
module opens.
3. In the Name column, click the port on which you want to enable VTP Snooping
switch wide. The Switch Port Configuration dialog box opens for that port.
4. From the Trunk Mode pull-down menu, select either IEEE 802.1Q or
Multi-layer to match the trunk mode setting of the switch port of the switch port
at the other end of the link.
5. From the VTP Snooping pull-down menu, select Enable. This is disabled by
default.
6. Click APPLY to save your changes, or CANCEL to restore previous settings.
7. In the Switching Parameters section of the Web Agent window, click VTP
Snooping. The VTP Snooping Configuration dialog box opens.
3-18 Cajun P550/P220 Switch Operation Guide