iam getting errors " NTP sync is lost " on the Router. How do i resolve this??
Feb 18 09:31:21 GMT: %NTP-5-PEERSYNC: NTP synced to peer 22.214.171.124
Feb 18 12:38:46 GMT: %NTP-4-UNSYNC: NTP sync is lost
Feb 18 12:39:46 GMT: %NTP-5-PEERSYNC: NTP synced to peer 126.96.36.199
Feb 18 12:39:46 GMT: %NTP-6-PEERREACH: Peer 188.8.131.52 is reachable
Feb 18 12:39:50 GMT: %NTP-6-PEERREACH: Peer 184.108.40.206 is reachable
Feb 18 21:48:48 GMT: %NTP-5-PEERSYNC: NTP synced to peer 220.127.116.11
Feb 19 00:55:51 GMT: %NTP-5-PEERSYNC: NTP synced to peer 18.104.22.168
This error is coming quite often in irregular intervals.
I had very similar symptoms where routers would report sync lost and sync to server. I opened a case with Cisco TAC about it but was not able to identify the cause. I upgraded the IOS to a new version and this symptom stopped. What version of IOS are you running when you see this?
I would suggest that you try a later version of 12.3 (that solved it for me) or you might consider opening a case with Cisco TAC on this issue and see what they suggest.
I am often getting this kind of log in my router. how can i stop or what its meaning this? it doesn't say sync lost and all.
Sep 3 05:51:53: %NTP-5-PEERSYNC: NTP synced to peer 10.1.1.4
Sep 3 05:51:53: %NTP-6-PEERREACH: Peer 10.1.1.4 is reachable
Sep 3 05:52:10: %NTP-5-PEERSYNC: NTP synced to peer 22.214.171.124
Sep 3 05:52:10: %NTP-6-PEERREACH: Peer 126.96.36.199 is reachable
Sep 3 05:52:13: %NTP-6-PEERREACH: Peer 188.8.131.52 is reachable
If you some know , please reply thanks.
What model of router is this and what version of IOS is it running?
Are you getting any indication of issues with NTP? If you periodically issue the show ntp status command, does it show that the NTP peer is in sync or does it indicate any issue?
As I have said in previous posts in this thread I have seen log messages about this periodically lling peer information when there is no real problem with NTP. My suggestion would be to upgrade to a different version of code and see if the log messages change.