Hi,
I have enabled NTP Server on Windows 2000 Server and configured the same as ntp server in my Routers ( 2550 Switch, 1720 Router, 7200 Router,2600). One the server I can see packets with port 123. Also on Server i see the matches for NTP packets. Both Router and Server are on same LAN and no ports are blocked. But the time is not getting synchronised. Can any one please help on this.
Thanks.
You specified you have no ports blocked but do you have any ACL configured on any of those devices? Moreover try to specify the source port for the NTP service:
ntp source
Let us know
A.
post output of
show version
show ntp assoc
show ntp status
The MS timesrver supports only a SNTP subset - for full NTP on Windows, try free tftpd32, its builtin NTP server works great in my lab. Using this one means disabling the MS timeserver first.
Synchronisation takes a while - sometimes 5 minutes (maybe more). By patient...
Ranga wrote:
Hi Here it is:
sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250.0000 Hz, actual freq is 249.9957 Hz, precision is
2**18 reference time is C7D14F69.48D8B8DB (23:05:37.284 IST Sun Mar 26 2006) clock offset is 2678427478.0148 msec, root delay is 1.13 msec root dispersion is 8564397.22 msec, peer dispersion is 16000.00 msecshow ver Cisco Internetwork Operating System Software IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(22)EA1, RELEASE SOFTWARE (fc1) Copyright (c) 1986-2004 by cisco Systems, Inc. Compiled Mon 12-Jul-04 09:21 by madison Image text-base: 0x00003000, data-base: 0x0083AEF4
ROM: Bootstrap program is C3550 boot loader
GilatL3 uptime is 18 weeks, 4 days, 21 hours, 18 minutes System returned to ROM by power-on System restarted at 01:47:32 IST Sat Dec 17 2005 System image file is "flash:/c3550-i5q3l2-mz.121-22.EA1.bin"
cisco WS-C3550-48 (PowerPC) processor (revision H0) with 65526K/8192K bytes of m emory. Processor board ID CAT0712Y0A8 Last reset from warm-reset Bridging software. Running Layer2/3 Switching Image
Ethernet-controller 1 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 2 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 3 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 4 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 5 has 1 Gigabit Ethernet/IEEE 802.3 interface
Ethernet-controller 6 has 1 Gigabit Ethernet/IEEE 802.3 interface
48 FastEthernet/IEEE 802.3 interface(s) 2 Gigabit Ethernet/IEEE 802.3 interface(s)The password-recovery mechanism is enabled.
384K bytes of flash-simulated non-volatile configuration memory. Base ethernet MAC Address: 00:0C:31:69:A6:00 Motherboard assembly number: 73-5701-09 Power supply part number: 34-0967-01 Motherboard serial number: CAT071103J1 Power supply serial number: DCA07040J29 Model revision number: H0 Motherboard revision number: A0 Model number: WS-C3550-48-SMI System serial number: CAT0712Y0A8 Configuration register is 0x10Fsh ntp associations
address ref clock st when poll reach delay offset disp ~195.1.1.252 172.28.64.31 2 8 64 0 1.1 267842 16000. * master (synced), # master (unsynced), + selected, - candidate, ~ configured
here is the show version, sh ntp status and sh ntp asso output:
sh ntp status Clock is unsynchronized, stratum 16, no reference clock nominal freq is 250.0000 Hz, actual freq is 249.9957 Hz, precision is
2**18 reference time is C7D14F69.48D8B8DB (23:05:37.284 IST Sun Mar 26 2006) clock offset is 2678427478.0148 msec, root delay is 1.13 msec root dispersion is 8564397.22 msec, peer dispersion is 16000.00 msecshow ver Cisco Internetwork Operating System Software IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(22)EA1, RELEASE SOFTWARE (fc1) Copyright (c) 1986-2004 by cisco Systems, Inc. Compiled Mon 12-Jul-04 09:21 by madison Image text-base: 0x00003000, data-base: 0x0083AEF4
ROM: Bootstrap program is C3550 boot loader
GilatL3 uptime is 18 weeks, 4 days, 21 hours, 18 minutes System returned to ROM by power-on System restarted at 01:47:32 IST Sat Dec 17 2005 System image file is "flash:/c3550-i5q3l2-mz.121-22.EA1.bin"
cisco WS-C3550-48 (PowerPC) processor (revision H0) with 65526K/8192K bytes of m emory. Processor board ID CAT0712Y0A8 Last reset from warm-reset Bridging software. Running Layer2/3 Switching Image
Ethernet-controller 1 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 2 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 3 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 4 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 5 has 1 Gigabit Ethernet/IEEE 802.3 interface
Ethernet-controller 6 has 1 Gigabit Ethernet/IEEE 802.3 interface
48 FastEthernet/IEEE 802.3 interface(s) 2 Gigabit Ethernet/IEEE 802.3 interface(s)The password-recovery mechanism is enabled.
384K bytes of flash-simulated non-volatile configuration memory. Base ethernet MAC Address: 00:0C:31:69:A6:00 Motherboard assembly number: 73-5701-09 Power supply part number: 34-0967-01 Motherboard serial number: CAT071103J1 Power supply serial number: DCA07040J29 Model revision number: H0 Motherboard revision number: A0 Model number: WS-C3550-48-SMI System serial number: CAT0712Y0A8 Configuration register is 0x10Fsh ntp associations
address ref clock st when poll reach delay offset disp ~195.1.1.252 172.28.64.31 2 8 64 0 1.1 267842 16000. * master (synced), # master (unsynced), + selected, - candidate, ~ configured
try using the ref clock at 172.28.64.31
no ntp server 195.1.1.252 ntp server 172.28.64.31
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