200-301 · Question #1139
Refer to the exhibit. A Cisco engineer is asked to update the configuration on switch 1 so that the EtherChannel stays up when one of the links fails. Which configuration meets this requirement?
The correct answer is B. Switch1(config) # interface port-channel 1. To ensure an EtherChannel remains operational when a member link fails, the configuration is applied to the logical port-channel interface, not individual physical interfaces.
Question
Refer to the exhibit. A Cisco engineer is asked to update the configuration on switch 1 so that the EtherChannel stays up when one of the links fails. Which configuration meets this requirement?
Exhibits
Options
- ASwitch1(config) # interface Fa0/0
- BSwitch1(config) # interface port-channel 1
- CSwitch1(config) # interface Fa0/0
- DSwitch1(config) # interface port-channel 1
How the community answered
(19 responses)- A5% (1)
- B79% (15)
- C5% (1)
- D11% (2)
Why each option
To ensure an EtherChannel remains operational when a member link fails, the configuration is applied to the logical port-channel interface, not individual physical interfaces.
Configuring `interface Fa0/0` would be for adding a physical interface to the channel group, not for defining the EtherChannel's overall redundancy behavior.
The command `interface port-channel 1` enters the configuration mode for the logical EtherChannel interface, allowing the bundle to operate as long as at least one active member link is present, thus meeting the requirement for redundancy.
Configuring `interface Fa0/0` would be for adding a physical interface to the channel group, not for defining the EtherChannel's overall redundancy behavior.
This option is identical to B, but it's a duplicate and not the designated correct answer.
Concept tested: EtherChannel logical interface configuration for redundancy
Source: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/12-2_55_se/configuration/guide/scg/swethchl.html
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