pfSense

                    <span class="vexpl">

		   <ul>

		<li>

		    <b>failover</b><br/>      

			Sends and receives traffic only through the master port.  If

                  the master port becomes unavailable, the next active port is

                  used.  The first interface added is the master port; any

                  interfaces added after that are used as failover devices.

		</li><li>

     <b>fec</b><br/>          Supports Cisco EtherChannel.  This is a static setup and

                  does not negotiate aggregation with the peer or exchange

                  frames to monitor the link.

		</li><li>

     <b>lacp</b><br/>         Supports the IEEE 802.3ad Link Aggregation Control Protocol

                  (LACP) and the Marker Protocol.  LACP will negotiate a set

                  of aggregable links with the peer in to one or more Link

                  Aggregated Groups.  Each LAG is composed of ports of the

                  same speed, set to full-duplex operation.  The traffic will

                  be balanced across the ports in the LAG with the greatest

                  total speed, in most cases there will only be one LAG which

                  contains all ports.  In the event of changes in physical

                  connectivity, Link Aggregation will quickly converge to a

                  new configuration.

		</li><li>

     <b>loadbalance</b><br/>  Balances outgoing traffic across the active ports based on

                  hashed protocol header information and accepts incoming

                  traffic from any active port.  This is a static setup and

                  does not negotiate aggregation with the peer or exchange

                  frames to monitor the link.  The hash includes the Ethernet

                  source and destination address, and, if available, the VLAN

                  tag, and the IP source and destination address.

		</li><li>

     <b>roundrobin</b><br/>   Distributes outgoing traffic using a round-robin scheduler

                  through all active ports and accepts incoming traffic from

                  any active port.

		</li><li>

     <b>none</b><br/>         This protocol is intended to do nothing: it disables any

                  traffic without disabling the lagg interface itself.

		</li>

	</ul>

	          </span></td>