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[ScreenOS] Juniper Firewall sends 'device changed' flag to NSM after NTP sync



Article ID: KB13145 KB Last Updated: 17 Jun 2010Version: 2.0
Juniper Firewall sends 'device changed' flag to NSM after NTP sync
In an NSRP cluster, the Primary and Backup firewalls keep sending 'device changed' flag to NSM at the NTP interval, disregarding what value it is configured.
Root cause: The Primary firewall is sending a NTP sync command through the NSRP link after syncing with the NTP server. When the Backup firewall receives the NSRP sync message, it takes the command as a manual change in itself, and it sends out a 'device change' flag to NSM.

The solution is to configure each NSRP cluster member to sync with the NTP server individually, then apply command 'set ntp no-ha-sync' to block the NTP sync from the Primary. 

Also see: KB7009 - Recommendation to disable NTP update to the member(s) in NSRP environment
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