Which two command sequences must you configure on a switch to establish a Layer 3 EtherChannel with an open-standard protocol? (choose two)

IT Questions BankWhich two command sequences must you configure on a switch to establish a Layer 3 EtherChannel with an open-standard protocol? (choose two)

Question:
Which two command sequences must you configure on a switch to establish a Layer 3 EtherChannel with an open-standard protocol? (choose two)

  • interface GigabitEthernet0/0/1
    channel-group 10 mode on
  • interface port-channel 10
    switchport
    switchport mode trunk
  • interface port-channel 10
    no switchport
    ip address 172.16.0.1 255.255.255.0
  • interface GigabitEthernet0/0/1
    channel-group 10 mode auto
  • interface GigabitEthernet0/0/1
    channel-group 10 mode active

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IFixYourWrongAnswers replied 12 months ago

C. interface GigabitEthernet0/0/1
channel-group 10 mode auto

E. interface port-channel 10
no switchport

ip address 172.16.0.1 255.255.255.0

C: The “channel-group 10 mode auto” command configures the interface to use the Cisco proprietary Port Aggregation Protocol (PAgP) in a passive mode. The passive mode will form an EtherChannel if the other side is configured with the “desirable” mode. Since PAgP is Cisco proprietary, using it in a mixed-vendor environment may not be the best choice. However, if you are working within a Cisco-only environment, PAgP can be used to establish an EtherChannel.

E: The “no switchport” command turns off the Layer 2 functionality on the port-channel interface, making it a Layer 3 interface. Then, the “ip address 172.16.0.1 255.255.255.0” command assigns an IP address to the Layer 3 EtherChannel interface, allowing it to participate in Layer 3 routing.

Please note that answer B is focused on an open-standard protocol (LACP) that would be compatible with non-Cisco devices. If you are working strictly within a Cisco-only environment, PAgP (with C as correct) can be used as well.

Dilcc replied 3 years ago

***interface GigabitEthernet0/0/1 channel-group 10 mode active

**interface port-channel 10
switchport
switchport mode trunk

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Dilcc
Dilcc
3 years ago

***interface GigabitEthernet0/0/1 channel-group 10 mode active

**interface port-channel 10
switchport
switchport mode trunk

IFixYourWrongAnswers
IFixYourWrongAnswers
11 months ago
Reply to  Dilcc

C. interface GigabitEthernet0/0/1
channel-group 10 mode auto

E. interface port-channel 10
no switchport

ip address 172.16.0.1 255.255.255.0

C: The “channel-group 10 mode auto” command configures the interface to use the Cisco proprietary Port Aggregation Protocol (PAgP) in a passive mode. The passive mode will form an EtherChannel if the other side is configured with the “desirable” mode. Since PAgP is Cisco proprietary, using it in a mixed-vendor environment may not be the best choice. However, if you are working within a Cisco-only environment, PAgP can be used to establish an EtherChannel.

E: The “no switchport” command turns off the Layer 2 functionality on the port-channel interface, making it a Layer 3 interface. Then, the “ip address 172.16.0.1 255.255.255.0” command assigns an IP address to the Layer 3 EtherChannel interface, allowing it to participate in Layer 3 routing.

Please note that answer B is focused on an open-standard protocol (LACP) that would be compatible with non-Cisco devices. If you are working strictly within a Cisco-only environment, PAgP (with C as correct) can be used as well.

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