Configuring Vtp; Default Vtp Configuration - Cisco Catalyst 2950 Software Configuration Manual

Configuring VTP

Enabling VTP pruning on a VTP server enables pruning for the entire management domain. Making
VLANs pruning-eligible or pruning-ineligible affects pruning eligibility for those VLANs on that device
only (not on all switches in the VTP domain). See the
VTP pruning takes effect several seconds after you enable it. VTP pruning does not prune traffic from
VLANs that are pruning-ineligible. VLAN 1 and VLANs 1002 to 1005 are always pruning-ineligible;
traffic from these VLANs cannot be pruned. Extended-range VLANs (VLAN IDs higher than 1005) are
also pruning-ineligible.
VTP pruning is not designed to function in VTP transparent mode. If one or more switches in the
network are in VTP transparent mode, you should do one of these:
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To configure VTP pruning on an interface, use the switchport trunk pruning vlan interface
configuration command (see the
pruning operates when an interface is trunking. You can set VLAN pruning-eligibility, whether or not
VTP pruning is enabled for the VTP domain, whether or not any given VLAN exists, and whether or not
the interface is currently trunking.
Configuring VTP
This section includes guidelines and procedures for configuring VTP. These sections are included:
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Default VTP Configuration

Table 17-2
Table 17-2
Feature
VTP domain name
VTP mode
VTP version 2 enable state
VTP password
VTP pruning
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
17-6
Turn off VTP pruning in the entire network.
Turn off VTP pruning by making all VLANs on the trunk of the switch upstream to the VTP
transparent switch pruning ineligible.
Default VTP Configuration, page 17-6
VTP Configuration Options, page 17-7
VTP Configuration Guidelines, page 17-8
Configuring a VTP Server, page 17-9
Configuring a VTP Client, page 17-11
Disabling VTP (VTP Transparent Mode), page 17-12
Enabling VTP Version 2, page 17-13
Enabling VTP Pruning, page 17-14
Adding a VTP Client Switch to a VTP Domain, page 17-15
shows the default VTP configuration.
Default VTP Configuration
"Enabling VTP Pruning" section on page
"Changing the Pruning-Eligible List" section on page
Default Setting
Null.
Server.
Version 2 is disabled.
None.
Disabled.
Chapter 17 Configuring VTP
17-14.
16-20). VTP
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