. Vlan 10 configuration successful Configuring VLANs There are a lot of options when creating a VLAN, but for the bare minimum, this is all you need. To show the status of the VLANs, execute the show vlan command: Switch1-Catos# (enable) sho vlan VLAN Name Status IfIndex Mod/Ports, Vlans default active 1/1-2 2/1-2 3/5-48 6/1-48 Lab-VLAN active VLAN0020 active 3/1-4 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active 1006 Online Diagnostic Vlan1 active internal 1007 Online Diagnostic Vlan2 active internal 1008 Online Diagnostic Vlan3 active internal 1009 Voice Internal Vlan active internal 1010 Dtp Vlan active internal 1011 Private Vlan Reserved Vlan suspend internal 1016 Online SP-RP Ping Vlan active internal Notice that VLAN 10 has the name you assigned; VLAN 20's name, which you did not assign, defaulted to VLAN0020. The output shows which ports are assigned to VLAN 20 and that most of the ports still reside in VLAN 1 (because VLAN 1 is the default VLAN, all ports reside there by default). There are no ports in VLAN 10 yet, SO add some, again using the set vlan command: Switch1-Catos# (enable)set vlan 10 6/1,6/3-4 VLAN 10 modified. VLAN 1 modified. VLAN Mod/Ports 10 6/1,6/3-4 You've now added ports 6/1, 6/3, and 6/4 to VLAN 10. Another show vlan will reflect these changes: Switch1-Catos# (enable) sho vlan VLAN Name Status IfIndex Mod/Ports, Vlans default active 1/1-2 2/1-2 3/5-48 6/2,6/5-48 Lab-VLAN active 6/1,6/3-4 VLAN0020 active 3/1-4 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active 1006 Online Diagnostic Vlan1 active internal 1007 Online Diagnostic Vlan2 active internal 1008 Online Diagnostic Vlan3 active internal Chapter 4: VLANs 1009 Voice Internal Vlan active internal 1010 Dtp Vlan active internal 1011 Private Vlan Reserved Vlan suspend internal 1016 Online SP-RP Ping Vlan active internal The output indicates that VLAN 1 was modified as well. This is because the ports had to be removed f