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Catalyst 2950 and Catalyst 2955 Switch Command Reference
0L-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
show vtp
VTP Operating Mode Displays the VTP operating mode, which can be server, client, or
transparent.
Server: a switch in VTP server mode is enabled for VTP and sends
advertisements. You can configure VLANs on it. The switch
guarantees that it can recover all the VLAN information in the
current VTP database from NVRAM after reboot. By default, every
switch is a VTP server.
Note The switch automatically changes from VTP server mode to
VTP client mode if it detects a failure while writing the
configuration to NVRAM and cannot return to server mode
until the NVRAM is functioning.
Client: a switch in VTP client mode is enabled for VTP, can send
advertisements, but does not have enough nonvolatile storage to
store VLAN configurations. You cannot configure VLANs on it.
When a VTP client starts up, it does not send VTP advertisements
until it receives advertisements to initialize its VLAN database.
Transparent: a switch in VTP transparent mode is disabled for VTP,
does not send or learn from advertisements sent by other devices,
and cannot affect VLAN configurations on other devices in the
network. The switch receives VTP advertisements and forwards
them on all trunk ports except the one on which the advertisement
was received.
VTP Domain Name Name that identifies the administrative domain for the switch.
VTP Pruning Mode Displays whether pruning is enabled or disabled. Enabling pruning
on a VTP server enables pruning for the entire management domain.
Pruning restricts flooded traffic to those trunk links that the traffic
must use to access the appropriate network devices.
VTP V2 Mode Displays if VTP version 2 mode is enabled. By default, all VTP
version 2 switches operate in version 1 mode. Each VTP switch
automatically detects the capabilities of all the other VTP devices.
A network of VTP devices should be configured to version 2 only
if all VTP switches in the network can operate in version 2 mode.
VTP Traps Generation Displays whether VTP traps are sent to a network management
station.
MD5 Digest A 16-byte checksum of the VTP configuration.
Configuration Last Modified Displays the date and time of the last configuration modification.
Displays the IP address of the switch that caused the configuration
change to the database.
Table 2-34 show vtp status Field Descriptions (continued)
Field Description
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