I have the LAG setup on the UTM side.. but I am not sure which is the best mode on the Cisco that the UTM ports are connecting to?? I didn't have to define any type of modes on the UTM.
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channel-group channel-group-number mode {auto [non-silent] | desirable [non-silent] | on} | {active | passive}
Assign the port to a channel group, and specify the PAgP or the LACP mode.
For channel-group-number, the range is 1 to 6.
For mode, select one of these keywords:
•auto—Enables PAgP only if a PAgP device is detected. It places the port into a passive negotiating state, in which the port responds to PAgP packets it receives but does not start PAgP packet negotiation.
The auto keyword is not supported when EtherChannel members are from different switches in the switch stack.
•desirable—Unconditionally enables PAgP. It places the port into an active negotiating state, in which the port starts negotiations with other ports by sending PAgP packets.
The desirable keyword is not supported when EtherChannel members are from different switches in the switch stack.
•on—Forces the port to channel without PAgP or LACP. In the on mode, an EtherChannel exists only when a port group in the on mode is connected to another port group in the on mode.
•non-silent—(Optional) If your switch is connected to a partner that is PAgP-capable, configure the switch port for nonsilent operation when the port is in the auto or desirable mode. If you do not specify non-silent, silent is assumed. The silent setting is for connections to file servers or packet analyzers. This setting allows PAgP to operate, to attach the port to a channel group, and to use the port for transmission.
•active—Enables LACP only if a LACP device is detected. It places the port into an active negotiating state in which the port starts negotiations with other ports by sending LACP packets.
•passive—Enables LACP on the port and places it into a passive negotiating state in which the port responds to LACP packets that it receives, but does not start LACP packet negotiation.
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