Weird Behavior Configuring Etherchannel

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I was working through Switching Fundamentals - Part One lab for Cisco 200-301 and discovered some weird behavior. I received an error when issuing the '

NYCORE1(config-if)#channel-group 1 mode pass
NYCORE1(config-if)#channel-group 1 mode passive

Command rejected (Channel protocol mismatch for interface Fa1/0/23 in group 1): the interface can not be added to the channel group

Why would the FA 1/0/23 remove itself from the channel-group automatically? What could be the cause of this behavior?

@Shannon-Wright,

I'm not at a computer where I can recreate this lab...I will try to get to it as soon as I can.

@Shannon-Wright said in Weird Behavior Configuring Etherchannel:

I was working through Switching Fundamentals - Part One lab for Cisco 200-301 and discovered some weird behavior. I received an error when issuing the '

NYCORE1(config-if)#channel-group 1 mode pass
NYCORE1(config-if)#channel-group 1 mode passive

Command rejected (Channel protocol mismatch for interface Fa1/0/23 in group 1): the interface can not be added to the channel group

Why would the FA 1/0/23 remove itself from the channel-group automatically? What could be the cause of this behavior?

This is just from perusing the lab guide... I haven't worked through that lab before.

You may have to configure the interface range fa1/0/23 - 24. From the above it looks as if you're trying to only configuring this on a single interface.NYCORE1(config-if)#... rather than NYCORE1(config-if-range)#

The switch is seeing that you're trying to configure another etherchannel on a single link..which it says...not possible.