Recommended configuration: Servers that need highly available network
interfaces.
CAUTION:
For HP Serviceguard configurations, the member links of an
APA Hot Standby link aggregate must be bridged to function properly. If
they are not, the node or cluster might go down when a member link fails.
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.
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).
Failover group advanced parameters
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