Lab 1-3: Configuring EtherChannel

Physical Topology Diagram

  • Visual Topology
  • Command List
  • Task 1: EtherChannel configuration

Visual Topology

Command List

Command Description
Channel-group id mode active Configures an interface as EtherChannel bundle members using LACP in active mode.
Channel-group id mode passive Configures an interface as EtherChannel bundle members using LACP in passive mode.
Configure Terminal Enters global configuration mode.
Copy run start Saves the dynamic running-config to NVRAM.
Interface range range Enters interface range configuration mode
Show etherchannel port-channel Displays port-channel interface information
Show Interface interface Displays interface statistics
Show spanning-tree vlan id Verifies spanning-tree information for a given VLAN

PC readiness: Assign the IP addresses used in the visual topology diagram for this exercise.

Task 1: EtherChannel Configuration

Step 1: Enable switchports fa0/1, fa0/3 and fa0/4 all other switchports should be shutdown.

Hint….Use the interface range command to speed up the process.

Step 2: Configure fa0/4 as a trunk connection.

Step 3: Validate that VLANs 1 and 2 are active on your switch

 SW#sh vlan

Create vlan 2 if it doesn’t exist.

Step 4: Because of the parallel links (fa0/3 & fa0/4) between the 2 switches spanning-tree will block one of the ports to prevent a loop. Use an appropriate show command to verify this.

Step 5: Shutdown fa0/3 and fa0/4

Step 6:

SW1 only....

Configure fa0/3 and fa0/4 interfaces as part of an Etherchannel bundle. Use 1 as the port channel identifier and configure LACP in active mode.

SW2 only....

Configure fa0/3 and fa0/4 interfaces as part of an Etherchannel bundle. Use 1 as the port channel identifier and configure LACP in passive mode.

Step 7: Enable fa0/3 and fa0/4

Step 8:

SW1 only.... 
Execute
SW1#show spanning-tree vlan 2

SW2 only 
Execute 
SW1#show spanning-tree vlan 1

Notice the Root port is now shown as Po1, which is the logical port created by the EtherChannel bundle.

Step 9: Save your running-config

Lab Answer Keys:

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