| Mode | Protocol | Description |
| Auto | PAgP | Enable PAgP
only if a PAgP device is detected, interface will to respond to PAgP
negotiation packets, but the interface will start negotiations on its own |
| Desirable | PAgP | Enable
PAgP unconditionally, the interface will actively attemt to negotiate a PAgP
connection |
| on | Etherchannel | Enable
Etherchannel only, forces the connection to bring all links up without using
a protocol to negotiate connections. This mode can only connect to another
device that also is set to same mode (ON). When using this mode, the switch
does note negotiate the link using either PAgP or LACP |
| Active | LACP | Enable
LACP unconditionally, the interface will actively attempt to negotiate
connection with other LACP Devices |
| Passive | LACP | Enable LACP only if a LACP device is
detected. Interface will respond to LACP data if it revices negotiation
request from other systems |