The cHsrpExtIfTrackedEntry allows an HSRP group
interface to track one or more interfaces. Weight(priority)
is given to each and every interface tracked. When a tracked
interface is unavailable, the HSRP priority of the router is
decreased. i.e cHsrpGrpPriority value assigned to an HSRP
group will reduce by the value assigned to
cHsrpExtIfTrackedPriority. This reduces the likelihood
of a router with a failed key interface becoming the
active router.
Setting cHsrpExtIfTrackedRowStatus to active starts
the tracking of cHsrpExtIfTracked by the HSRP group.
The value of cHsrpExtIfTrackedRowStatus may be set
to destroy at any time.
Entries may not be created via SNMP without explicitly setting
cHsrpExtIfTrackedRowStatus to either 'createAndGo'
or 'createAndWait'.
Entries can be created and modified via the management
protocol or by the device's local management interface.
If the row is not active, and a local management interface
command modifies that row, the row may transition to active
state.
A row entry in the cHsrpExtIfTrackedTable can not be created
unless the corresponding row in the cHsrpGrpTable has been
created. If that corresponding row in cHsrpGrpTable is
deleted, the interfaces it tracks also get deleted.
A row which is not in active state will timeout after a
configurable period (five minutes by default). This timeout
period can be changed by setting cHsrpConfigTimeout.