Which combination of channel-group modes will establish an EtherChannel?
- Switch 1 set to auto; switch 2 set to auto.
- Switch 1 set to auto; switch 2 set to on.
- Switch 1 set to desirable; switch 2 set to desirable.
- Switch 1 set to on; switch 2 set to desirable.
Explanation: Switch 1 and switch 2 will establish an EtherChannel if both sides are set to desirable, because both sides will negotiate the link. A channel can also be established if both sides are set to on, or if one side is set to auto and the other to desirable. Setting one switch to on will prevent that switch from negotiating the formation of an EtherChannel bundle.
Exam with this question: 6.4.4 Module Quiz - Etherchannel Answers
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