Hi I am trying to configure NTP for Redhat Linux AS 4 update 4 running in DL585 with Windows Server 2003. My ntp is no longer synchronizing with the servers specified in ntp.conf
Client: Redhat Linux ntp.conf server 172.16.0.201 prefer server 127.127.1.0 # local clock fudge 127.127.1.0 stratum 10 driftfile /var/lib/ntp/drift broadcastdelay 0.008 restrict 127.0.0.1 Server: Windows 2003 As mentioned in http://www.timetools.co.uk/support/windows-2003-ntp-time-server.htm Now the /var/log/messages shows: Jan 5 19:00:50 txnaslload03 ntpdate[3028]: step time server 16.74.32.162 offset 3597.014966 sec Jan 5 19:00:50 txnaslload03 ntpd: succeeded Jan 5 19:00:50 txnaslload03 ntpd[3032]: ntpd [EMAIL PROTECTED] Thu Apr 20 11:28:36 EDT 2006 (1) Jan 5 19:00:50 txnaslload03 ntpd[3032]: precision = 1.000 usec Jan 5 19:00:50 txnaslload03 ntpd[3032]: Listening on interface wildcard, 0.0.0.0#123 Jan 5 19:00:50 txnaslload03 ntpd[3032]: Listening on interface wildcard, ::#123 Jan 5 19:00:50 txnaslload03 ntpd[3032]: Listening on interface lo, 127.0.0.1#123 Jan 5 19:00:50 txnaslload03 ntpd[3032]: Listening on interface eth0, 16.74.35.185#123 Jan 5 19:00:50 txnaslload03 ntpd[3032]: Listening on interface eth1, 192.168.36.91#123 Jan 5 19:00:50 txnaslload03 ntpd[3032]: Listening on interface eth2, 172.16.0.200#123 Jan 5 19:00:50 txnaslload03 ntpd[3032]: kernel time sync status 0040 Jan 5 19:00:50 txnaslload03 ntpd: ntpd startup succeeded [EMAIL PROTECTED] etc]# ntpq -p remote refid st t when poll reach delay offset jitter ============================================================================== 172.16.0.201 .LOCL. 1 u 59 64 3 0.413 12.476 7.679 LOCAL(0) LOCAL(0) 10 l 59 64 3 0.000 0.000 0.001 TCPDUMP from REDHAT: [EMAIL PROTECTED] ~]# tcpdump -i eth2 -vv "port 123" tcpdump: listening on eth2, link-type EN10MB (Ethernet), capture size 96 bytes 19:00:51.917563 IP (tos 0x10, ttl 64, id 0, offset 0, flags [DF], proto 17, length: 76) 172.16.0.200.ntp > 172.16.0.201.ntp: [bad udp cksum 4dd7!] NTPv4, length 48 Client, Leap indicator: clock unsynchronized (192), Stratum 0, poll 6s, precision -20 Root Delay: 0.000000, Root dispersion: 0.000000, Reference-ID: (unspec) Reference Timestamp: 0.000000000 Originator Timestamp: 0.000000000 Receive Timestamp: 0.000000000 Transmit Timestamp: 3377034051.916440010 (2007/01/05 19:00:51) Originator - Receive Timestamp: 0.000000000 Originator - Transmit Timestamp: 3377034051.916440010 (2007/01/05 19:00:51) 19:00:51.917673 IP (tos 0x0, ttl 128, id 55087, offset 0, flags [none], proto 17, length: 76) 172.16.0.201.ntp > 172.16.0.200.ntp: [udp sum ok] NTPv3, length 48 Server, Leap indicator: (0), Stratum 1, poll 6s, precision -6 Root Delay: 0.000000, Root dispersion: 10.071197, Reference-ID: LOCL Reference Timestamp: 3377029250.015875000 (2007/01/05 17:40:50) Originator Timestamp: 3377034051.916440010 (2007/01/05 19:00:51) Receive Timestamp: 3377034051.921875000 (2007/01/05 19:00:51) Transmit Timestamp: 3377034051.921875000 (2007/01/05 19:00:51) Originator - Receive Timestamp: +0.005435000 Originator - Transmit Timestamp: +0.005435000 See clock unsynchronized and [bad udp cksum 4dd7!] I have changed the time in Windows server just to check whether the client is in sync with server. After some time I got this messages in /var/log/messages Jan 5 19:04:06 txnaslload03 ntpd[3032]: synchronized to LOCAL(0), stratum 10 Jan 5 19:19:18 txnaslload03 ntpd[3032]: kernel time sync disabled 0041 Jan 5 19:20:23 txnaslload03 ntpd[3032]: kernel time sync enabled 0001 [EMAIL PROTECTED] etc]# ntpq -pn remote refid st t when poll reach delay offset jitter ============================================================================== 172.16.0.201 .LOCL. 1 u 45 64 377 0.217 12624.4 5.814 *127.127.1.0 LOCAL(0) 10 l 31 64 377 0.000 0.000 0.001 See it is synchronizing with itself. "synchronized to LOCAL(0)" instead of server. 19:26:37.229019 IP (tos 0x10, ttl 64, id 0, offset 0, flags [DF], proto 17, length: 76) 172.16.0.200.ntp > 172.16.0.201.ntp: [bad udp cksum 87f1!] NTPv4, length 48 Client, Leap indicator: (0), Stratum 11, poll 7s, precision -20 Root Delay: 0.000000, Root dispersion: 0.012619, Reference-ID: 127.127.1.0 Reference Timestamp: 3377035546.185166001 (2007/01/05 19:25:46) Originator Timestamp: 3377035544.796875000 (2007/01/05 19:25:44) Receive Timestamp: 3377035532.174002006 (2007/01/05 19:25:32) Transmit Timestamp: 3377035597.229001000 (2007/01/05 19:26:37) Originator - Receive Timestamp: -12.622873008 Originator - Transmit Timestamp: +52.432125985 19:26:37.229183 IP (tos 0x0, ttl 128, id 60109, offset 0, flags [none], proto 17, length: 76) 172.16.0.201.ntp > 172.16.0.200.ntp: [udp sum ok] NTPv3, length 48 Server, Leap indicator: (0), Stratum 1, poll 7s, precision -6 Root Delay: 0.000000, Root dispersion: 10.089080, Reference-ID: LOCL Reference Timestamp: 3377029262.625374972 (2007/01/05 17:41:02) Originator Timestamp: 3377035597.229001000 (2007/01/05 19:26:37) Receive Timestamp: 3377035609.859375000 (2007/01/05 19:26:49) Transmit Timestamp: 3377035609.859375000 (2007/01/05 19:26:49) Originator - Receive Timestamp: +12.630374014 Originator - Transmit Timestamp: +12.630374014 I have waited for a long and the client never sync with the server. I have changed the client configuration by giving just the server name. In that case no sync at all. Also if I query the server I will get [EMAIL PROTECTED] ~]# ntpq -p 172.16.0.201 172.16.0.201: timed out, nothing received ***Request timed out Please help me in this. Thanks _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
