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

Failover group advanced parameters
Dead Count
The number of polling packets that are missed before LAN Monitor sends a nettl log message
to the user that indicates the link might have problems and the network must be checked. The
default is 3.
Polling Interval
The number of microseconds between polling messages. Polling messages are sent between links
in the specified interval for monitoring the health of all the links in the link aggregate. Default is
10,000,000 (10 seconds).
Rapid ARP
Enables (on) or disables (off) the ability to transmit gratuitous ARP messages at intervals shorter
than 5 seconds. By default, this parameter is on.
By default, when the MAC address of a failover group changes, LAN Monitor transmits one
gratuitous ARP packet. Then, it transmits gratuitous ARP packets at a set interval
(LM_RAPID_ARP_INTERVAL) for a set number of times (LM_RAPID_ARP_COUNT) to ensure that
other clients and servers receive the new IP-MAC address mapping. LAN Monitor then transmits
gratuitous ARP packets every 5 seconds until 1 minute has elapsed from the first gratuitous ARP
packet.
If you disable this parameter, immediately after the MAC address changes LAN Monitor transmits
gratuitous ARP packets every 5 seconds for 1 minute.
Rapid ARP Interval
The number of microseconds between rapid gratuitous ARP messages. The range of valid values
is 1000000–4000000, inclusive (1 second to 4 seconds). The default value is 1000000 (1
second). Specify a whole number of seconds because the value you specify is rounded up to the
next whole number of seconds. The value must be a valid integer. The rapid ARP interval multiplied
by the rapid ARP count must be less than or equal to 60 seconds.
Rapid ARP Count
The number of gratuitous ARP packets sent rapidly. The valid range is 5–60, inclusive. The default
value is 10. The value must be a valid integer. The rapid ARP interval multiplied by the rapid ARP
count must be less than or equal to 60 seconds.
Configuring a link aggregate
Use the Network Interfaces Configuration tool of the System Management Homepage (SMH) to
create a link aggregate. To invoke SMH, follow the instructions in “Administrative methods”
(page 11). See the same section for alternatives to using SMH.
Complete the following steps:
Failover group advanced parameters 27