NTP not synching properly

Unanswered Question
Aug 19th, 2010
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We have a designated NTP server on our corporate network, running on Cisco routers.  When I specify this NTP, on Cisco or other equipment, the time does not sync.

However, I can get to other NTP servers on the same network, and others can get to the designated servers without issue.

Below is the output of a debug on the router, with my equipment being IP 30.151.255.52.


Aug 19 00:39:13.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:13.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:13.131 Zulu:     UDP src=123, dst=123
mostl-che-wan-01#
Aug 19 00:39:14.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:14.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:14.131 Zulu:     UDP src=123, dst=123
Aug 19 00:39:15.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:15.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:15.131 Zulu:     UDP src=123, dst=123
Aug 19 00:39:15.271 Zulu: NTP: rcv packet from 30.132.16.47 to 30.254.255.123 on Loopback123:
Aug 19 00:39:15.271 Zulu:  leap 0, mode 3, version 4, stratum 4, ppoll 64
Aug 19 00:39:15.271 Zulu:  rtdel 0A8F (41.245), rtdsp 0D3C (51.697), refid 1E80F1FB (30.128.241.251)
Aug 19 00:39:15.271 Zulu:  ref D016FAE8.50506608 (00:35:52.313 Zulu Thu Aug 19 2010)
Aug 19 00:39:15.271 Zulu:  org D016FB71.463CA891 (00:38:09.274 Zulu Thu Aug 19 2010)
Aug 19 00:39:15.271 Zulu:  rec D016FB71.4676F358 (00:38:09.275 Zulu Thu Aug 19 2010)
Aug 19 00:39:15.271 Zulu:  xmt D016FBB3.463BA537 (00:39:15.274 Zulu Thu Aug 19 2010)
Aug 19 00:39:15.271 Zulu:  inp D016FBB3.46369393 (00:39:15.274 Zulu Thu Aug 19 2010)
Aug 19 00:39:15.271 Zulu: NTP: stateless xmit packet to 30.132.16.47:
Aug 19 00:39:15.271 Zulu:  leap 0, mode 4, version 4, stratum 3, ppoll 64
Aug 19 00:39:15.271 Zulu:  rtdel 0B26 (43.549), rtdsp 02C4 (10.803), refid 1EFE28FE (30.254.40.254)
Aug 19 00:39:15.271 Zulu:  ref D016F8ED.7FF94744 (00:27:25.499 Zulu Thu Aug 19 2010)
Aug 19 00:39:15.271 Zulu:  org D016FBB3.463BA537 (00:39:15.274 Zulu Thu Aug 19 2010)
mostl-che-wan-01#
Aug 19 00:39:15.271 Zulu:  rec D016FBB3.46369393 (00:39:15.274 Zulu Thu Aug 19 2010)
Aug 19 00:39:15.271 Zulu:  xmt D016FBB3.46638949 (00:39:15.274 Zulu Thu Aug 19 2010)
Aug 19 00:39:16.087 Zulu: NTP: rcv packet from 30.151.255.43 to 30.254.255.123 on Loopback123:
Aug 19 00:39:16.087 Zulu:  leap 0, mode 3, version 3, stratum 4, ppoll 128
Aug 19 00:39:16.087 Zulu:  rtdel 0B95 (45.242), rtdsp 013C (4.822), refid 1EFEFF7C (30.254.255.124)
Aug 19 00:39:16.087 Zulu:  ref D016FB91.1814870D (00:38:41.094 Zulu Thu Aug 19 2010)
Aug 19 00:39:16.087 Zulu:  org D016FB74.14A8F32E (00:38:12.080 Zulu Thu Aug 19 2010)
Aug 19 00:39:16.087 Zulu:  rec D016FB74.14C6FCF7 (00:38:12.081 Zulu Thu Aug 19 2010)
Aug 19 00:39:16.087 Zulu:  xmt D016FBB4.16895892 (00:39:16.088 Zulu Thu Aug 19 2010)
Aug 19 00:39:16.087 Zulu:  inp D016FBB4.16A2379D (00:39:16.088 Zulu Thu Aug 19 2010)
Aug 19 00:39:16.087 Zulu: NTP: stateless xmit packet to 30.151.255.43:
Aug 19 00:39:16.087 Zulu:  leap 0, mode 4, version 3, stratum 3, ppoll 128
Aug 19 00:39:16.087 Zulu:  rtdel 0B26 (43.549), rtdsp 02C4 (10.803), refid 1EFE28FE (30.254.40.254)
Aug 19 00:39:16.087 Zulu:  ref D016F8ED.7FF94744 (00:27:25.499 Zulu Thu Aug 19 2010)
Aug 19 00:39:16.087 Zulu:  org D016FBB4.16895892 (00:39:16.088 Zulu Thu Aug 19 2010)
Aug 19 00:39:16.087 Zulu:  rec D016FBB4.16A2379D (00:39:16.088 Zulu Thu Aug 19 2010)
mostl-che-wan-01#
Aug 19 00:39:16.087 Zulu:  xmt D016FBB4.16D98AC8 (00:39:16.089 Zulu Thu Aug 19 2010)
Aug 19 00:39:16.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:16.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:16.131 Zulu:     UDP src=123, dst=123
mostl-che-wan-01#und
Aug 19 00:39:17.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:17.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:17.131 Zulu:     UDP src=123, dst=123
mostl-che-wan-01#undeb
Aug 19 00:39:18.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:18.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:18.131 Zulu:     UDP src=123, dst=123
Aug 19 00:39:19.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:19.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:19.131 Zulu:     UDP src=123, dst=123
Aug 19 00:39:19.263 Zulu: NTP: rcv packet from 10.208.8.95 to 30.254.255.123 on Loopback123:
Aug 19 00:39:19.263 Zulu:  leap 0, mode 3, version 3, stratum 4, ppoll 64
Aug 19 00:39:19.263 Zulu:  rtdel 0B4D (44.144), rtdsp 0302 (11.749), refid 1EFEFF7B (30.254.255.123)
Aug 19 00:39:19.263 Zulu:  ref D016FB77.4433D000 (00:38:15.266 Zulu Thu Aug 19 2010)
Aug 19 00:39:19.263 Zulu:  org D016FB77.4418C1C0 (00:38:15.266 Zulu Thu Aug 19 2010)
Aug 19 00:39:19.263 Zulu:  rec D016FB77.4433D000 (00:38:15.266 Zulu Thu Aug 19 2010)
Aug 19 00:39:19.263 Zulu:  xmt D016FBB7.43D7F000 (00:39:19.265 Zulu Thu Aug 19 2010)
Aug 19 00:39:19.263 Zulu:  inp D016FBB7.43EBF21D (00:39:19.265 Zulu Thu Aug 19 2010)
Aug 19 00:39:19.263 Zulu: NTP: stateless xmit packet to 10.208.8.95:
Aug 19 00:39:19.263 Zulu:  leap 0, mode 4, version 3, stratum 3, ppoll 64
Aug 19 00:39:19.263 Zulu:  rtdel 0B26 (43.549), rtdsp 02C4 (10.803), refid 1EFE28FE (30.254.40.254)
Aug 19 00:39:19.263 Zulu:  ref D016F8ED.7FF94744 (00:27:25.499 Zulu Thu Aug 19 2010)
Aug 19 00:39:19.263 Zulu:  org D016FBB7.43D7F000 (00:39:19.265 Zulu Thu Aug 19 2010)
mostl-che-wan-01#undebug ntp
Aug 19 00:39:19.263 Zulu:  rec D016FBB7.43EBF21D (00:39:19.265 Zulu Thu Aug 19 2010)
Aug 19 00:39:19.263 Zulu:  xmt D016FBB7.4418584E (00:39:19.265 Zulu Thu Aug 19 2010)
Aug 19 00:39:20.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:20.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:20.131 Zulu:     UDP src=123, dst=123
mostl-che-wan-01#undebug ntp pa
Aug 19 00:39:21.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:21.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:21.131 Zulu:     UDP src=123, dst=123
Aug 19 00:39:22.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:22.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:22.131 Zulu:     UDP src=123, dst=123
Aug 19 00:39:22.287 Zulu: NTP: rcv packet from 30.132.48.58 to 30.254.255.123 on Loopback123:
Aug 19 00:39:22.287 Zulu:  leap 0, mode 3, version 4, stratum 4, ppoll 64
Aug 19 00:39:22.287 Zulu:  rtdel 0A8A (41.168), rtdsp 0D43 (51.804), refid 1E80F1FB (30.128.241.251)
Aug 19 00:39:22.287 Zulu:  ref D016FB00.52DBC0A8 (00:36:16.323 Zulu Thu Aug 19 2010)
Aug 19 00:39:22.287 Zulu:  org D016FB7A.49C95120 (00:38:18.288 Zulu Thu Aug 19 2010)
Aug 19 00:39:22.287 Zulu:  rec D016FB7A.4A389437 (00:38:18.289 Zulu Thu Aug 19 2010)
Aug 19 00:39:22.287 Zulu:  xmt D016FBBA.49D0E45C (00:39:22.288 Zulu Thu Aug 19 2010)
Aug 19 00:39:22.287 Zulu:  inp D016FBBA.49C26BEF (00:39:22.288 Zulu Thu Aug 19 2010)
Aug 19 00:39:22.287 Zulu: NTP: stateless xmit packet to 30.132.48.58:
Aug 19 00:39:22.287 Zulu:  leap 0, mode 4, version 4, stratum 3, ppoll 64
Aug 19 00:39:22.287 Zulu:  rtdel 0B26 (43.549), rtdsp 02C4 (10.803), refid 1EFE28FE (30.254.40.254)
Aug 19 00:39:22.287 Zulu:  ref D016F8ED.7FF94744 (00:27:25.499 Zulu Thu Aug 19 2010)
Aug 19 00:39:22.287 Zulu:  org D016FBBA.49D0E45C (00:39:22.288 Zulu Thu Aug 19 2010)
mostl-che-wan-01#undebug ntp packet
NTP packets debugging is off
mostl-che-wan-01#
Aug 19 00:39:22.287 Zulu:  rec D016FBBA.49C26BEF (00:39:22.288 Zulu Thu Aug 19 2010)
Aug 19 00:39:22.287 Zulu:  xmt D016FBBA.49EDA25A (00:39:22.288 Zulu Thu Aug 19 2010)
Aug 19 00:39:23.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
Aug 19 00:39:23.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:23.131 Zulu:     UDP src=123, dst=123
Aug 19 00:39:23.611 Zulu: NTP: rcv packet from 10.208.4.100 to 30.254.255.123 on Loopback123:
Aug 19 00:39:23.611 Zulu:  leap 0, mode 3, version 3, stratum 4, ppoll 256
Aug 19 00:39:23.611 Zulu:  rtdel 0B68 (44.556), rtdsp 034B (12.863), refid 1EFEFF7B (30.254.255.123)
Aug 19 00:39:23.611 Zulu:  ref D016F9F2.9E4A4872 (00:31:46.618 Zulu Thu Aug 19 2010)
Aug 19 00:39:23.611 Zulu:  org D016F9F2.9EA45C80 (00:31:46.619 Zulu Thu Aug 19 2010)
Aug 19 00:39:23.611 Zulu:  rec D016F9F2.9E4A4872 (00:31:46.618 Zulu Thu Aug 19 2010)
Aug 19 00:39:23.611 Zulu:  xmt D016FBBB.9C3FF29D (00:39:23.610 Zulu Thu Aug 19 2010)
Aug 19 00:39:23.611 Zulu:  inp D016FBBB.9CD395AF (00:39:23.612 Zulu Thu Aug 19 2010)
mostl-che-wan-01#
Aug 19 00:39:23.611 Zulu: NTP: stateless xmit packet to 10.208.4.100:
Aug 19 00:39:23.611 Zulu:  leap 0, mode 4, version 3, stratum 3, ppoll 256
Aug 19 00:39:23.611 Zulu:  rtdel 0B26 (43.549), rtdsp 02C4 (10.803), refid 1EFE28FE (30.254.40.254)
Aug 19 00:39:23.611 Zulu:  ref D016F8ED.7FF94744 (00:27:25.499 Zulu Thu Aug 19 2010)
Aug 19 00:39:23.611 Zulu:  org D016FBBB.9C3FF29D (00:39:23.610 Zulu Thu Aug 19 2010)
Aug 19 00:39:23.611 Zulu:  rec D016FBBB.9CD395AF (00:39:23.612 Zulu Thu Aug 19 2010)
Aug 19 00:39:23.611 Zulu:  xmt D016FBBB.9D0A21F6 (00:39:23.613 Zulu Thu Aug 19 2010)
Aug 19 00:39:24.131 Zulu: IP: tableid=0, s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123 (Loopback123), routed via RIB
mostl-che-wan-01#
Aug 19 00:39:24.131 Zulu: IP: s=30.151.255.52 (GigabitEthernet1/13), d=30.254.255.123, len 76, rcvd 4
Aug 19 00:39:24.131 Zulu:     UDP src=123, dst=123



Thank you,

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Leo Laohoo Thu, 08/19/2010 - 17:11
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Can you post your NTP configs?

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