Monitoring The Redundancy Status - Juniper SERVICE AVAILABILITY - CONFIGURATION GUIDE V 11.1.X Configuration Manual

active SRP module and the active SRP module subsequently synchronizes with the
standby SRP module.
After reloading, and even though high availability mode is configured, the active SRP
module reverts to using the file-system-synchronization operational mode for
synchronizing updates. To complete the upgrade and place the system back in
high-availability operational mode, you must execute the srp switch command to
force the standby SRP module to take over as the active SRP module.
NOTE: Executing the srp switch command results in a cold restart of the router.
After the switchover is initiated, the formerly active SRP module reloads the software
and starts running the same release as the newly active SRP module. When the
formerly active SRP module becomes operational as the standby SRP module, the
newly active SRP module detects that the release it is running is the same as that on
the standby SRP module and allows the originally active SRP module to resume the
high-availability operational mode.
If a fault occurs when the active SRP module is in file-system-synchronization
operational mode, the standby SRP module detects the fault and takes over, and the
router cold-restarts. For this reason, you must arm the new release only when you
can accept the resulting window of vulnerability where high availability is disabled
(that is, until the active and standby SRP modules are again running the same release).
Related Topics

Monitoring the Redundancy Status

Display the redundancy modes and other information about stateful SRP switchover.
Purpose
To display summary redundancy status information.
Action
host1#show redundancy
SRP
---
high-availability state:
current redundancy mode:
last activation type:
Criteria Preventing High Availability from being Active
-------------------------------------------------------
-----------------------------------------------
Standby SRP is online and capable of mirroring?
Line Card
Stateful SRP Switchover Redundancy Modes on page 27
Stateful SRP Switchover States on page 29
srp switch
disabled
high-availability
cold-switch
criterion
Chapter 3: Managing Stateful SRP Switchover
met
---
No

Monitoring the Redundancy Status

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