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I agree about negotiation... Except here. The problem with &quot;on&quot; where etherchannel is concerned is that if there's a problem, &quot;on&quot; may not errdisable the ports. Then you've got yourself a good old fashioned broadcast storm. Desirable mode is better at dealing with this.<br />

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Yep. That's what I tell people in class: With etherchannel, EVERYTHING must match. :-)
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Hello,<br />
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When configuring Etherchannel between 2 3750 devices which protocol and mode should I use?
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Hello,

When configuring Etherchannel between 2 3750 devices which protocol and mode should I use?

I agree about negotiation... Except here. The problem with &quot;on&quot; where etherchannel is concerned is that if there&#39;s a problem, &quot;on&quot; may not errdisable the ports. Then you&#39;ve got yourself a good old fashioned broadcast storm. Desirable mode is better at dealing with this.


Yep. That&#39;s what I tell people in class: With etherchannel, EVERYTHING must match. :-)

Cisco Etherchannel

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.