NTP Associations

gdandas · ‎12-17-2002

I have a 2621 router running IOS 12.1

I have "ntp server" statements to a couple of public NTP servers (Stratum 2).

I am receiving ntp updates from these servers, however, the command "show ntp associations detail" reveals that these servers are:

"configured, insane, invalid, unsynced, stratum 16".

An example is listed at the bottom of this message.

WHAT AM I MISSING??

-------------------------------------------------------------------------------------------------

nnn.nnn.nnn.111 configured, insane, invalid, unsynced, stratum 16

ref ID 0.0.0.0, time 00000000.00000000 (17:00:00.000 mst Wed Dec 31 1899)

our mode client, peer mode unspec, our poll intvl 64, peer poll intvl 64

root delay 0.00 msec, root disp 0.00, reach 0, sync dist 4718046.387

delay 0.00 msec, offset 0.0000 msec, dispersion 16000.00

precision 2**5, version 3

org time 00000000.00000000 (17:00:00.000 mst Wed Dec 31 1899)

rcv time 00000000.00000000 (17:00:00.000 mst Wed Dec 31 1899)

xmt time C1A9E8B8.4D728FCA (11:17:28.302 mst Tue Dec 17 2002)

filtdelay = 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

filtoffset = 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

filterror = 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0 16000.0

murabi · ‎12-26-2002

The following URL explains the show ntp associations detail

Particularly search for the keywords - "configured, insane, invalid, unsynced, stratum 16" in the URL page

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_command_reference_chapter09186a008010a3f4.html

jhalldn · ‎12-29-2002

Hi,

If you check the lines starting with org.., rcv.. and xmt... You will see that the time doesnt match and you dont get a correct stamp. xmt time is Dec17 2002, org and rcv time is Dec 31 1899.

Start by set the time in your router manuelly, "clock set ....".

Try to ping the ntp servers.

start "debug ntp ..."

Do a " no ntp server ...." and put it back again, "ntp server ...", one at a time.

Hope this helps some...