Link Aggregate Advanced Parameters - HP -UX 11i v3 Administrator's Manual

Priority
The port priority in a failover group (LAN_MONITOR mode) using priority-based failover or
cost-based failover. If you assign a priority value to one link, you must assign a priority value
to all links in the failover group. Leave this blank if you do not want to assign a priority value;
HP APA will assign it.
Cost
The port cost in a failover group (LAN_MONITOR mode) using cost-based failover. A link that
has a lower normalized cost (cost divided by the link speed) is preferred over one with a higher
normalized cost. When both links have the same normalized cost, the one with the higher priority
is preferred. If you assign a cost value to one link, you must assign a cost value to all links in the
failover group. Leave this blank if you do not want to assign a cost value; HP APA will assign
it.

Link aggregate advanced parameters

Load Distribution Algorithm
The algorithm to use for outbound data transfer. Inbound load balancing and data flow
distribution are strictly determined by the link partner and have no affect on the outbound
algorithm. For a complete description of load balancing, see
the algorithm you want to use. The following choices are available:
LB_MAC
LB_IP
LB_PORT
HOT_STANDBY
(MANUAL mode
only)
32 Configuring APA
This algorithm uses the least significant byte of the link level destination
MAC address of the data flow as an index into a table of 256 possible entries.
The physical port selected will be used to send packets for the duration of
the specific data flow.
This is the default algorithm for all link aggregates.
Recommended Configuration: Server-to-Switch
This algorithm uses the least significant bytes of the source and destination
IP addresses of the data flow as an index into a table of 256 possible entries.
Recommended Configuration: Server-to-Router
This algorithm uses the TCP/UDP source and destination port numbers to
distribute traffic across the ports in a link aggregate.
Recommended configuration: Server-to-Server
This algorithm uses one link in the link aggregate on which to send all
outbound traffic; there is no actual load balancing across the network physical
ports in the link aggregate. The link is the one with highest port priority. If
the active link goes down (for example, cable disconnect), all the traffic on
the link is automatically switched to a secondary link in the same link
aggregate.
If you chose this option, the ports must be cabled to a switch and the switch
ports must not be configured for aggregation.
"Load balancing" (page 10). Check