Hi JangJang,
You can config like this :
Product: ScreenOS (SSG550)
Version: 6.0
Network Topology: N/A
Description:
The configuration below shows you how to configure NSRP cluster (High Available). Device with lowest priority will become Master (Active) and the other is Slave (Standby).
Configuration:
Device 1:
set nsrp cluster id 1
set nsrp vsd-group id 0 priority 50
set nsrp rto-mirror sync
set nsrp monitor interface eth0/0
set nsrp monitor interface eth0/2
save
Device 2:
set nsrp cluster id 1
set nsrp vsd-group id 0 priority 100
set nsrp rto-mirror sync
set nsrp monitor interface eth0/0
set nsrp monitor interface eth0/2
save
Advance configuration:
/* Sync Files */
exec nsrp sync file from peer
/* or synchronize a single file */
exec nsrp sync file name <name_str> from peer
/* Sync/resync PKI objects (CA cert, key pairs, CRLs) */
exec nsrp sync global-config save
/* Sync Configuration */
exec nsrp conf sync
Verification:
/* Check Synchronization */
exec nsrp sync glocal-config check-sum
Link: http://forums.juniper.net/t5/Configuration-Library/Configure-NSRP-on-ScreenOS/td-p/69294
Regards,