CCNPTM Switching Study Guide : Exam 640-604 by Todd Lammle; Eric Quinn

By Todd Lammle; Eric Quinn

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Com Scaling the Switch Block 109 [M] Menus [K] Command Line [I] IP Configuration Enter Selection: K CLI session with the switch is open. To end the CLI session, enter [Exit]. To configure VLANs on an IOS-based switch, use the vlan vlan# name vlan_name command: >enable #configure terminal Enter configuration commands, one per line. End with CNTL/Z (config)#hostname 1900EN 1900EN(config)#vlan 2 name sales 1900EN(config)#vlan 3 name marketing 1900EN(config)#vlan 4 name mis 1900EN(config)#exit Catalyst 2900XL/3500XL Although the 1900EN switch commands are often the same as the ones for the higher-end closet switches, setting up VLANs on new 2900s or 3500s tends to confuse people.

In other words, when the 80/20 rule becomes the 20/80 rule, end-to-end VLANs are more difficult to maintain, and so you will want to use a local VLAN. In contrast to end-to-end VLANs, local VLANs are configured by geographic location; these locations can be a building or just a closet in a building, depending on switch size. Geographically configured VLANs are designed around the fact that the business or corporation is using centralized resources, such as a server farm. The users will spend most of their time utilizing these centralized resources and 20 percent or less on the local VLAN.

To end the CLI session, enter [Exit]. To configure VLANs on an IOS-based switch, use the vlan vlan# name vlan_name command: >enable #configure terminal Enter configuration commands, one per line. End with CNTL/Z (config)#hostname 1900EN 1900EN(config)#vlan 2 name sales 1900EN(config)#vlan 3 name marketing 1900EN(config)#vlan 4 name mis 1900EN(config)#exit Catalyst 2900XL/3500XL Although the 1900EN switch commands are often the same as the ones for the higher-end closet switches, setting up VLANs on new 2900s or 3500s tends to confuse people.

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