Table of Contents
Advertisement
Disabled State
Copyright © 2010, Juniper Networks, Inc.
Figure 4: High Availability States
The initial, default state for high availability mode is disabled. While in this state, the
router continues to use file system synchronization. If a switchover occurs while the router
is in this state, the standby SRP module performs a cold restart.
The router enters this state when you power up the router or when the router
warm-restarts from an SRP switchover.
After you enable high availability, the system must meet the following criteria before it
can enter the initializing state:
High availability mode is configured.
Active SRP hardware supports high availability.
Network core dump feature is disabled.
Running configuration allows high availability to operate (that is, no unsupported
applications are configured).
Standby SRP hardware supports high availability.
Standby SRP module is online and capable of mirroring.
Standby SRP module is running the same release.
During the disabled state:
If any one criterion is not met, the system remains in the disabled state, until the criterion
is met.
If a switchover occurs while the system is in the disabled state, the system cold-restarts.
Chapter 3: Managing Stateful SRP Switchover
39
Advertisement
Table of Contents
