HP Auto Port Aggregation Administrator's Guide HP-UX 11i v3 (766140-001, March 2014)

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 “Load balancing” (page 8). Check the algorithm
you want to use. The following choices are available:
LB_PORT This algorithm uses the TCP/UDP source and destination port numbers to
distribute traffic across the ports in a link aggregate.
LB_MAC 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.
LB_IP 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.
Group Capability
An integer value that determines which network physical ports can be aggregated into a common
FEC_AUTO mode link aggregate. The easiest way to create a value is to use the instance number
of the link aggregate as the group capability. You must use the same group capability for all ports
that you want to join this link aggregate and use the same group capability for the link aggregate.
TIP: When configuring link aggregates, if more than one FEC_AUTO aggregation is used on
the system, each FEC_AUTO aggregation must have a different group capability.
Key
An integer value that determines which network physical ports can be aggregated into a common
LACP_AUTO mode link aggregate. The easiest way to create a value is to use the instance number
of the link aggregate as the key. You must use the same key value for all of the ports that you want
to join this link aggregate and use the same key value for the link aggregate.
26 Configuring APA