Vtp Configuration Guidelines; Domain Names; Passwords - Cisco Catalyst 2950 Software Manual

Using VTP
Figure 8-2
Switch 5
Switch 6

VTP Configuration Guidelines

These sections describe the guidelines you should follow when configuring the VTP domain name and
password and the VTP version number.

Domain Names

When configuring VTP for the first time, you must always assign a domain name. You must also
configure all switches in the VTP domain with the same domain name. Switches in VTP transparent
mode do not exchange VTP messages with other switches, and you do not need to configure a VTP
domain name for them.
Do not configure a VTP domain if all switches are operating in VTP client mode. If you configure the
Caution
domain, it is impossible to make changes to the VLAN configuration of that domain. Therefore, make
sure you configure at least one switch in the VTP domain for VTP server mode.

Passwords

You can configure a password for the VTP domain, but it is not required. All domain switches must share
the same password. Switches without a password or with the wrong password reject VTP
advertisements.
Caution The domain does not function properly if you do not assign the same password to each switch in the
domain.
Catalyst 2950 Desktop Switch Software Configuration Guide
8-10
Optimized Flooded Traffic with VTP Pruning
Switch 4
Flooded traffic
Port
is pruned.
4
Flooded traffic
Port
is pruned.
5
Switch 3
Port 2
Catalyst 2900 XL,
Catalyst 3500 XL,
or Catalyst 2950
Switch 2
Port 1
Switch 1
Chapter 8 Configuring VLANs
Red
VLAN
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