Question on Etherchannel Protocol

I had a friend who I think misconfigure the Etherchannel protocol in his company. But I am not sure about it.

When I ask him to give me a "show etherchannel summary". The protocol field is empty. And the "show run" also didnt show any etherchannel protocol on it. I asked him what protocol he used for the Etherchannel, but he wasnt sure about it.

As far as I know, you need to tell the switch to use either LACP or PAgP when you configure an Etherchannel right? How come his network still working like normal???

Is there any way to check if the ether channel is running alright??

Cheers

As far as i know, PAgP provides Automatic EtherChannel config and negotiation between Cisco Switches. I would have thought the protocol should be listed though ?

u mean PAgP will auto nego the protocol if both switch is Cisco? The weird thing is, the show etherchannel summary did not show the protocol. The protocol field was blank...wierd.

Yup, according to Cisco's Website

"Port aggregation protocol (PAgP) aids in the automatic creation of Fast EtherChannel links. PAgP packets are sent between Fast EtherChannel-capable ports in order to negotiate the forming of a channel. "

Not sure about the protocol missing, i have always manually configured the etherchannel

Has your problem been resolved?