Initial Configuration

• en - "enable," turns the device into a mode where you can configure it
• conf t - enters configuration mode
• do show run - shows the running config from anywhere in the configuration

You can tell what mode you are in by the information in the parenthesis after the name of the device. For example, if it says (config) then you are in general configuration mode, and if it says (config-if) or (config-if-range) then you are in the configuration of specific ports.

Switch Configuration

Configuring VLANs on switch

• east-ew-01 (config)#int range Fa 0/4-12 - enters config for ports 4-12
• east-ew-01 (config-if-range)#switchport access vlan 100 - Sets the ports for that VLAN

Configuring trunk ports on switch

• east-ew-01 (config-if)#switchport mode trunk - sets that port to a trunk port

Multilayer Switch Routing Config

Routing between vlans

• east-csw-01 (config)#int vlan 100 - configure selected vlan
• east-csw-01 (config-if)#ip address 10.10.11.1 255.255.255.0 - configure the router ip address for the vlan you are in