NTP Clock is unsynchronized on Cisco 3750x switch

[sukhendra]

I have a windows NTP server in my network and I have already configure NTP on my cisco 3750x switch, but it's unable to synchronized with server, my server IP is 10.148.62.10 and it connected with FastEthernet1/0/7 port..Below are the startup config and show details...

ntp broadcastdelay 1
ntp source FastEthernet1/0/7
ntp server 10.148.62.10
end

Core_3750#sh nt status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**18
reference time is 00000000.00000000 (05:30:00.000 UTC Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.00 msec, peer dispersion is 0.00 msec

Core_3750#sh nt ass de
10.148.62.10 configured, insane, invalid, stratum 1
ref ID .LOCL., time D827FD3B.5ABB98C7 (14:26:27.354 UTC Tue Dec 2 2014)
our mode client, peer mode server, our poll intvl 1024, peer poll intvl 1024
root delay 0.00 msec, root disp 10195.48, reach 377, sync dist 10279.541
delay 3.17 msec, offset 686305772990.4370 msec, dispersion 82.47
precision 2**6, version 3
org time D82839EF.B6E48E8A (18:45:27.714 UTC Tue Dec 2 2014)
rcv time AF400802.B9BFC537 (10:15:54.725 UTC Thu Mar 4 1993)
xmt time AF400802.B8EEC8A1 (10:15:54.722 UTC Thu Mar 4 1993)
filtdelay =     3.17    1.77   36.83    1.59    1.24    1.24    2.06    0.76
filtoffset = 6863057 6863057 6863057 6863057 6863057 6863057 6863057 6863057
filterror =     0.02   15.64   31.27   46.89   46.91   46.92   46.94   46.95

[ghostinthenet]

Let's simplify things and remove the following to configuration lines:

ntp broadcastdelay 1
ntp source FastEthernet1/0/7 

See if that clears things up. If it doesn't, can you post the results of a "show running-config interface FastEthernet1/0/7" for me?

[sukhendra]

Thanks for your interaction, but it not synchronize.

As required...

Core_3750#sh run int f1/0/7
Building configuration...

Current configuration : 110 bytes
!
interface FastEthernet1/0/7
 switchport access vlan 10
 switchport mode access
 speed 100
 duplex full
end

runing config..

!
ntp server 10.148.62.10
end

[Leo Laohoo]

I have a windows NTP server in my network and I have already configure NTP on my cisco 3750x switch

You won't get this to work.  Windows OS do NOT follow NTP/SNTP standards.  Windows OS can synch with, for example, a Cisco appliance for NTP but the Windows OS is a client and NOT a server.  

The best bet is to get one of your Cisco appliance and point to an authoritative NTP source and get your Windows OS to point to your Cisco appliance as an authoritative source.

[ghostinthenet]

Good to know! I've always synchronized servers against the network infrastructure and never the other way around. This would never have occurred to me.