runing vlan except vlan-id command. Remember to double-check your work with the show interface interface switch port command. Adding and removing VLANs can quickly get confusing, especially with IOS managing VTP pruning on an interface basis. CatOS CatOS gives you a nice warning about running VTP in the entire domain when you enable VTP pruning. Pruning is enabled with the set vtp pruning enable command: Switch1-CatOS# (enable)set vtp pruning enable This command will enable the pruning function in the entire management domain. All devices in the management domain should be pruning-capable before enabling. Do you want to continue (y/n) [n]? y VTP domain GAD-Lab modified Disabling pruning results in a similar prompt. To disable VTP pruning on CatOS, use the set vtp pruning disable command: Switch1-Catos# (enable)set vtp pruning disable This command will disable the pruning function in the entire management domain. Do you want to continue (y/n) [n]? y VTP domain GAD-Lab modified Once pruning has been enabled, VLANs 2-1000 are eligible for pruning by default. To remove a VLAN from the list of eligible VLANs, use the clear vtp pruneeligible com- mand. Unlike IOS, CatOS manages pruning-eligible VLANs on a switch level as op- posed to an interface level: Switch1-CatOS# (enable) clear vtp pruneeligible 100 Vlans 1,100,1001-4094 will not be pruned on this device. VTP domain GAD-Lab modified. To add a VLAN back into the list of VLANs eligible for pruning, use the set vtp pruneeligible command: Switch1-CatOS# (enable)set vtp pruneeligible 100 Vlans 2-1000 eligible for pruning on this device. VTP domain GAD-Lab modified. Chapter 6: VLAN Trunking Protocol NX-OS NX-OS does not support VTP pruning, since the switches only run in modes transparent or off. Configuring VTP CHAPTER 7 Link Aggregation EtherChannel EtherChannel is the Cisco term for the technology that enables the bonding of up to eight physical Ethernet links into a single logical link. Cisco originally called Ether- Channel Fast EtherChannel (FEC), as it was only a