Vtp Version 3 Per-Port Configuration; Vtp Version 3 Domains, Modes, And Partitions - Cisco WS-C2948G-GE-TX Configuration Manual

Understanding How VTP Version 3 Works
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For more information on configuring passwords, see the
section on page

VTP Version 3 Per-Port Configuration

Note With software release 8.1(1), all VTP versions can be configured on a per-port basis.
VTP version 3 allows you to disable the protocol on a per-port basis. If a trunk is connected to a switch
or server that is not trusted and is not supposed to interact with the VTP domain, it is now possible to
drop incoming VTP packets and prevent VTP advertisements on a particular trunk. This configuration
option has no impact on other protocols.
For more information on per-port configuration options, see the
Basis" section on page

VTP Version 3 Domains, Modes, and Partitions

The main differences between VTP version 3 domains and modes and VTP version 1 and VTP version 2
are as follows:
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These features are described in detail in the following sections:
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Primary Servers, Secondary Servers, and Clients
In previous VTP implementations, the main VTP server characteristic was to be able to modify and store
the VTP domain configuration in NVRAM. A VTP client could only receive the configuration from the
network and could not save or modify it. The VTP version 3 primary server functions the same way as
VTP version 1 and VTP version 2 servers. A VTP version 3 secondary server can store the configuration
of the domain but cannot modify it. The concept of client is unchanged (see
distinction in VTP version 3 is that the server, client, and transparent modes are specific to a VTP
instance. For example, it is possible for a switch to be a primary server for one instance and a client for
another instance.
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
9-14
If a password is configured as hidden, using the hidden password configuration option, the
following occurs:
– The password does not appear in plain text in the configuration; the secret hexadecimal format
of the password is saved in the configuration.
– If you try to configure the switch as a primary server, you are prompted for the password. If your
password matches the secret password, the switch becomes a primary server allowing you to
configure the domain.
9-27.
9-29.
A VTP version 3 server can be configured as primary or secondary.
VTP version 3 modes (server, client, and transparent) are specific to a VTP instance.
A VTP version 3 domain can be partitioned.
Primary Servers, Secondary Servers, and Clients, page 9-14
Partitioned VTP Domains, page 9-15
Reconfiguring a Partitioned VTP Domain, page 9-16
Chapter 9
"Configuring VTP Version 3 Passwords"
"Disabling VTP Version 3 on a Per-Port
Figure
Configuring VTP
9-3). The main
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