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NTP Sync loosing sometimes

I have configure my router as a peer of another NTP peer to take the time. I am able to syncronize and fetch the time. But after sometime, I am loosing the sync ( still i am able to ping the peer). Then again it is coming back after sometime.!! any clue on this. below the debug output taken while losing sync

Thanks in advance

Aug 27 17:26:47.414 IST: rtdel 108A (64.606), rtdsp 02A5 (10.330), refid 0AFFF348 (10.255.243.72)

Aug 27 17:26:47.414 IST: ref CC5FB97F.6EE29B62 (17:01:11.433 IST Wed Aug 27 2008)

Aug 27 17:26:47.414 IST: org CC5FB97F.6E16F176 (17:01:11.430 IST Wed Aug 27 2008)

Aug 27 17:26:47.414 IST: rec CC5FB97F.6EE29B62 (17:01:11.433 IST Wed Aug 27 2008)

Aug 27 17:26:47.414 IST: xmt CC5FBF7F.6A2F21D6 (17:26:47.414 IST Wed Aug 27 2008)

Aug 27 17:26:47.430 IST: %SEC-6-IPACCESSLOGP: list 101 permitted udp 10.255.243.72(123) -> 10.254.126.18(123), 1 packet

Aug 27 17:26:47.430 IST: NTP: rcv packet from 10.255.243.72 to 10.254.126.18 on Serial0/0/0:0:

Aug 27 17:26:47.430 IST: leap 0, mode 2, version 3, stratum 3, ppoll 512

Aug 27 17:26:47.430 IST: rtdel 0E74 (56.458), rtdsp 801DE (8007.294), refid 0AFFF306 (10.255.243.6)

Aug 27 17:26:47.430 IST: ref CC5FBCF5.7D549CB2 (17:15:57.489 IST Wed Aug 27 2008)

Aug 27 17:26:47.430 IST: org CC5FBF7F.6A2F21D6 (17:26:47.414 IST Wed Aug 27 2008)

Aug 27 17:26:47.430 IST: rec CC5FBF7F.6D64AF73 (17:26:47.427 IST Wed Aug 27 2008)

Aug 27 17:26:47.430 IST: xmt CC5FBF7F.6D680E86 (17:26:47.427 IST Wed Aug 27 2008)

Aug 27 17:26:47.430 IST: inp CC5FBF7F.6E98A72C (17:26:47.432 IST Wed Aug 27 2008)

Aug 27 17:26:47.430 IST: NTP: peer stratum change

Aug 27 17:26:47.430 IST: NTP: sync lost

1 REPLY
Anonymous
N/A

Re: NTP Sync loosing sometimes

You may try upgrading the router with the new IOS version.

You may also try giving the “clear counter” on the interfaces to verify that packets are not been lost (in Client and Master router only).

The following URL may help you to get more information about NTP:

http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.5/system_management/configuration/guide/yc35ntp.html#wp1015352

The following URL may help in setting timers:

http://www.cisco.com/en/US/docs/ios/12_1/interface/configuration/guide/icdoverv.html#wp1012811BA1340700

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