Configuring VLANs, Trunk Ports, and EtherChannel on Cisco Switches
This guide demonstrates how to create VLANs, assign them to interface ranges, configure trunk ports, and set up EtherChannel for redundant parallel connections on Cisco switches using CLI commands.
This article shows step‑by‑step CLI commands to create VLAN 2 and VLAN 3 on two Cisco switches, name the VLANs, and assign them to specific fast‑ethernet interface ranges using switchport access vlan .
Example commands for Switch0 include: Switch0(config)#vlan 2 Switch0(config-vlan)#name wangluobu Switch0(config-vlan)#interface range fastethernet0/1-2 Switch0(config-if-range)#switchport access vlan 2 Switch0(config)#vlan 3 Switch0(config-vlan)#name xiaoshou Switch0(config-vlan)#interface range fastethernet0/3-4 Switch0(config-if-range)#switchport access vlan 3
Similar commands are repeated for Switch1, followed by show vlan to verify the VLAN configuration.
To configure a trunk port on Switch1, the guide uses: Switch1(config)#interface fastEthernet 0/5 Switch1(config-if)#switchport mode trunk
The resulting trunk status can be displayed with: Switch#show interface fastEthernet 0/5 switchport
For redundancy, multiple ports are bundled into an EtherChannel. The commands on Switch0 are: Switch0(config)#interface range fastethernet 0/6-7 Switch0(config-if-range)#switchport mode trunk Switch0(config-if-range)#channel-group 1 mode on
After configuration, the EtherChannel summary can be checked with: show etherchannel summary
Additional steps include shutting down interfaces and testing connectivity with a ping to 192.168.1.4 to confirm the setup.
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