on-loss-of-keepalives
Syntax
on-loss-of-keepalives;
Hierarchy Level
[edit chassis redundancy failover]
Description
Instruct the backup router to take primary role if it detects a loss of keepalive signal from the primary Routing Engine.
Default
The on-loss-of-keepalives statement must be included at the
[edit chassis redundancy failover] hierarchy level for failover
to occur.
When the on-loss-of-keepalives statement is included but graceful
Routing Engine switchover is not configured, failover occurs
after 300 seconds (5 minutes).
When the on-loss-of-keepalives statement is included and graceful
Routing Engine switchover is configured, the keepalive signal is
automatically enabled and the failover time is set to 2 seconds (4 seconds on M20
routers) . The keepalive time is not configurable.
The on-loss-of-keepalives statement at the [edit chassis
redundancy] hierarchy is not supported on PTX platforms running
Junos Evolved. These platforms default to a switchover when keepalive messages
are not detected.
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
Release Information
Statement introduced before Junos OS Release 7.4.