CCNA: Cisco Certified Network Associate — Question 62

Which two command sequences must be configured on a switch to establish a Layer 3 EtherChannel with an open-standard protocol? (Choose two.)

Answer options

• A. interface GigabitEthernet0/0/1 channel-group 10 mode auto
• B. interface GigabitEthernet0/0/1 channel-group 10 mode on
• C. interface port-channel 10 no switchport ip address 172.16.0.1 255.255.255.0
• D. interface GigabitEthernet0/0/1 channel-group 10 mode active
• E. interface port-channel 10 switchport switchport mode trunk

Correct answer: C, D

Explanation

The correct commands for establishing a Layer 3 EtherChannel are 'interface port-channel 10 no switchport ip address 172.16.0.1 255.255.255.0' (C) which configures the port-channel interface without switchport functionality and assigns an IP address, and 'interface GigabitEthernet0/0/1 channel-group 10 mode active' (D) which sets the interface to use LACP, an open-standard protocol. Options A, B, and E do not fulfill the requirements for Layer 3 EtherChannel configuration.