NTP is not working on my cisco WS-C3750E-24TD-Switch

[Madhuraj singh kushwah]

Hi ,

I am trying to configure NTP on my L3 switch but Ntp clock is not synchronized .

My NTP Server is a Window 2003 server machine.The switch is directly connected with server .

I configure the switch as we configure generally.

NTP server ip address(x.x.x.x)

Please suggest the solution....

Please find the attached output of ntp status and ntp association.

System image file is "flash:c3750e-ipbasek9-mz.150-2.SE2.bin"

SWCORE#sh ntp associations de
SWCORE#sh ntp associations detail
10.34.226.41 configured, insane, invalid, stratum 2
ref ID 10.34.30.5    , time D7205FB3.CBC85F7F (15:28:11.796 IST Fri May 16 2014)
our mode client, peer mode server, our poll intvl 64, peer poll intvl 64
root delay 31.25 msec, root disp 10229.98, reach 377, sync dist 10298.15
delay 1.27 msec, offset 293807.1765 msec, dispersion 15.63
precision 2**6, version 4
org time D72064A2.C3D8C1CD (15:49:14.765 IST Fri May 16 2014)
rec time D720637C.F55F4088 (15:44:20.958 IST Fri May 16 2014)
xmt time D720637C.F50C0484 (15:44:20.957 IST Fri May 16 2014)
filtdelay =     1.27    2.48    2.59    2.63    1.66    5.18    2.58    2.22
filtoffset = 293807. 293797. 293807. 293804. 293809. 293804. 293799. 293807.
filterror =    15.63   15.66   15.69   15.72   15.75   15.78   15.81   15.84
minpoll = 6, maxpoll = 10

SWCORE#sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (05:30:00.000 IST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 1596.07 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SWCORE#

[Leo Laohoo · Accepted solution]

My NTP Server is a Window 2003 server machine.The switch is directly connected with server.

Wait, stop right there.  You are not the first, nor you will be the last to attempt to use an MS server as an NTP/SNTP source and FAIL.  

Microsoft's interpretation of NTP/SNTP is NOT standard.   MS can synch with Cisco appliance for time synch but not the other way around.  

You'll need to get your appliance to synch with something in the internet (for example) or you'll need to get a GPS-based NTP server.