Juniper Networks ERX-1410 - Manual (Page 176)

APPENDIX E
Installing ERX System Software E-16
The redundaant SRP module will automatically reboot, because the
software release that it is configured to run differs from the software
release it is running.
6
Wait for the redundant SRP module to boot, initialize, and reach the
standby state.
When the module is in standby state, the REDUNDANT LED is on
and the ONLINE LED is off. If you issue the
show version
command, the state field for the module should be standby.
After any type of reboot, the primary and redundant SRP module
NVS file systems will be unsynchronized again.
7 Synchronize the NVS file system of the redundant module to that of
the primary module.
host1#synchronize
8
Switch from the primary SRP module to the redundant SRP
module.
host1#srp switch