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Difficulty: MediumLayer 2 and Layer 3 EtherChannel (LACP)

A network administrator needs to configure a routed (Layer 3) LACP EtherChannel (Port-Channel 10) using physical member interfaces GigabitEthernet0/1 and GigabitEthernet0/2, and assign the IPv4 address 10.1.1.1/30 to the bundle. Place the CLI configuration steps in the correct operational sequence from first to last.

  1. 1Execute `interface range GigabitEthernet0/1 - 2` to enter interface configuration mode for the physical member links.
  2. 2Execute `no switchport` on the physical member interfaces to disable Layer 2 switching capabilities.
  3. 3Execute `channel-group 10 mode active` to initiate LACP negotiation and create the EtherChannel bundle.
  4. 4Execute `interface Port-channel10` to enter configuration mode for the logical channel-group interface.
  5. 5Execute `ip address 10.1.1.1 255.255.255.252` on the logical Port-Channel interface.

Answer

The correct configuration sequence is: First select physical interfaces with `interface range GigabitEthernet0/1 - 2`, second disable Layer 2 operation using `no switchport`, third associate member interfaces into LACP using `channel-group 10 mode active`, fourth enter logical interface mode via `interface Port-channel10`, and fifth configure the IPv4 address using `ip address 10.1.1.1 255.255.255.252`.
The correct operational sequence begins by selecting physical interfaces using `interface range GigabitEthernet0/1 - 2`, converting them to routed interfaces with `no switchport`, and binding them to the dynamic LACP channel group via `channel-group 10 mode active`. Next, configuration mode shifts to the created virtual interface using `interface Port-channel10`, where the IP address is configured with `ip address 10.1.1.1 255.255.255.252`.

Step-by-Step Solution

1
Select physical interfaces
Enters interface range configuration mode for GigabitEthernet0/1 and GigabitEthernet0/2.
Configuration options must be applied to physical interfaces simultaneously using interface range mode.
2
Convert interfaces to Layer 3
Removes switchport capabilities from member interfaces.
Physical member ports must be converted to routed ports with `no switchport` prior to creating a Layer 3 EtherChannel.
3
Configure LACP channel group
Creates Port-channel10 and enables active dynamic negotiation.
Executing `channel-group 10 mode active` dynamically creates the Port-channel interface using LACP.
4
Enter logical Port-Channel interface
Transitions CLI prompt to `config-if` mode for Port-channel10.
Network layer configuration parameters must be applied to the virtual interface rather than physical ports.
5
Assign IPv4 addressing
Applies IP subnet 10.1.1.1/30 to the EtherChannel logical interface.
Layer 3 EtherChannels route traffic based on the IP address assigned directly to the Port-Channel interface.

Key Concept

Layer 3 EtherChannel (LACP) CLI Configuration Sequence
Estimated Time:1m 30s
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Topics

Layer 2 and Layer 3 EtherChannel (LACP)

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