Enabling vtp pruning – IBM 12.1(22)EA6 User Manual
Page 275
13-13
Cisco Systems Intelligent Gigabit Ethernet Switch Modules for the IBM BladeCenter, Software Configuration Guide
24R9746
Chapter 13 Configuring VTP
Configuring VTP
Beginning in privileged EXEC mode, follow these steps to enable VTP version 2:
To disable VTP version 2, use the no vtp version global configuration command.
Note
You can also enable VTP version 2 by using the vlan database privileged EXEC command to enter
VLAN configuration mode and entering the vtp v2-mode VLAN configuration command. To disable
VTP version 2, use the no vtp v2-mode VLAN configuration command.
Enabling VTP Pruning
Pruning increases available bandwidth by restricting flooded traffic to those trunk links that the traffic
must use to access the destination devices. You can only enable VTP pruning on a switch in VTP server
mode.
Beginning in privileged EXEC mode, follow these steps to enable VTP pruning in the VTP domain:
To disable VTP pruning, use the no vtp pruning global configuration command.
Note
You can also enable VTP pruning by using the vlan database privileged EXEC command to enter
VLAN configuration mode and entering the vtp pruning VLAN configuration command. To disable
VTP pruning, use the no vtp pruning VLAN configuration command.
Pruning is supported with VTP version 1 and version 2. If you enable pruning on the VTP server, it is
enabled for the entire VTP domain.
Only VLANs included in the pruning-eligible list can be pruned. By default, VLANs 2 through 1001 are
pruning eligible on trunk ports. Extended-range VLANs cannot be pruned. To change the
pruning-eligible VLANs, see the
“Changing the Pruning-Eligible List” section on page 12-20
.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
vtp version 2
Enable VTP version 2 on the switch.
VTP version 2 is disabled by default on VTP version 2-capable switches.
Step 3
end
Return to privileged EXEC mode.
Step 4
show vtp status
Verify that VTP version 2 is enabled in the VTP V2 Mode field of the display.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
vtp pruning
Enable pruning in the VTP administrative domain.
By default, pruning is disabled. You need to enable pruning on only one switch
in VTP server mode.
Step 3
end
Return to privileged EXEC mode.
Step 4
show vtp status
Verify your entries in the VTP Pruning Mode field of the display.