Specifications

Configuring a Redundant System
BIG-IP® Reference Guide 6-17
◆ Local.Bigip.Failover.UnitId
This is the default unit number of the BIG-IP. This value is set by the
Setup utility or when you upgrade your units to this version of the
BIG-IP software.
◆ Common.Bigip.Failover.ManFailBack
This is set to 1 so that manual intervention is required (the bigpipe
failover failback command is issued) before a BIG-IP running both unit
numbers surrenders a unit number to its peer. This feature is off by
default, fail-back is automatic. For more details, see the section
Understanding active-active system fail-over, on page 6-15.
◆ Common.Bigip.Failover.AwaitPeerDeadDelay
The BIG-IP checks to see that its peer is still alive at this rate (in
seconds). The default value for this parameter is one second.
◆ Common.Bigip.Failover.AwaitPeerAliveDelay
Check status of a peer BIG-IP while waiting for it to come to life with
this frequency (in seconds). The default value of this parameter is three
seconds.
◆ Common.Bigip.Failover.DbgFile
If a file name is specified, the fail-over mechanism logs state change
information in this file. This value is not set by default.
◆ Common.Bigip.Failover.PrintPeerState
Causes the fail-over mechanism to periodically write to the log file, the
state of its connections to its peer (hard-wired and/or network).
Common.Bigip.Failover.DbgFile.
Additional commands for displaying active vs. mirrored data
The dump commands explicitly show those connections (and other objects)
that are active on the BIG-IP, and those that are standby connections for the
peer BIG-IP. In prior versions of the BIG-IP, one unit is the active unit and
the other is the standby. When the bigpipe conn dump command is issued
on the active unit, each of the connections shown is active. Similarly, when
the bigpipe conn dump command is issued on the standby unit, it is clear
that each of the connections listed is a standby connection. These standby
connections are created by mirroring the active connections on the standby
unit.
In an active-active installation, each unit can be considered a standby for its
peer BIG-IP. By default, the dump command only shows items that are
active on the given unit. To see standby items you must use the mirror
qualifier. You can use the following commands with the mirror option:
b conn dump [mirror]
b virtual persist dump [mirror]
b sticky dump [mirror]
Also, we have modified the bigpipe snat show command output to show
whether a connection listed is an active connection or a mirror connection.