VTP Password: MilkBottle To remove the VTP password, negate the command: 3750-IOS (config) #no vtp password Clearing device VLAN database password. CatOS Set the password for VTP in CatOS with the set vtp passwd command: Switch1-Cat0S# (enable)set vtp passwd MilkBottle Generating the secret associated to the password. VTP domain GAD-Lab modified To encrypt the password SO it cannot be read in the configuration, append the word hidden to the command: Switch1-Catos# (enable)set vtp passwd MilkBottle hidden Generating the secret associated to the password. The VTP password will not be shown in the configuration. VTP domain GAD- - Lab modified To clear the password on a CatOS switch, set the password to the number zero: Switch1-Catos# (enable)set vtp passwd 0 Resetting the password to Default value. VTP domain GAD Lab modified NX-OS NX-OS does not support VTP passwords, since the switches only run in transparent or off mode. VTP Pruning VTP pruning must be enabled or disabled throughout the entire VTP domain. Failure to configure VTP pruning properly can result in instability in the network. By default, all VLANs up to VLAN 1001 are eligible for pruning, except VLAN 1, which can never be pruned. VTP does not support the extended VLANs above VLAN 1001, SO VLANs higher than 1001 cannot be pruned. CatOS allows the pruning of VLANs 2-1000. If you enable VTP pruning on a VTP server, VTP pruning will automatically be enabled for the entire domain. Chapter 6: VLAN Trunking Protocol VTP pruning is enabled with the vtp pruning command on IOS. This can only be done when in VTP server mode: 3750-I0S(config)#vtp pruning Pruning switched on Disabling VTP pruning is done by negating the command (no vtp pruning). To show which VLANs are eligible for pruning on a trunk, execute the show inter face interface-id switchport command: 3750-IOS#sho int g1/0/15 switchport Name: Gi1/0/15 Switchport: Enabled Administrative Mode: dynamic auto Operational Mode: down Administrative Trunking Encapsulation: negotiate Negotiation of Trunking: On A