THanks for ur mail; i have tried installing 2 -3 software (time server) on my machine (windows 2000) but router /switch time is not synchronizing with the time server software. Other PCs are synchronizing , but Only Cisco devices are not !!!!!
i have checked the device configrations several times ,everything is OK,, but i am unable to get it why it is not snchronizing.
when we give command ,,
show ntp associations
it takes My macines ip as a MASTER clock but it shows 0.0.0.0 as reference clock....
Also when we give command
show ntp associations details
it shows " clock is insane , invalid
i am unable to understand where i am doing mistakes
It sounds like the time server you are running on the windows box is not formatting replies in a method that the IOS recognizes. If you go through the various RFCs, there are 12 related to either Network Time Protocol (NTP) or Simple Network Time Protocol (SNTP).
If you have the option, try setting up a router to get time from one of the authorative time servers. Personally I like both tick.usno.navy.mil and tock.usno.navy.mil. If it has no problem with either of those servers then I would suspect that your local time server is not using the same protocol as the router expects. If you are behind a firewall that will not let you go to one of these servers, see if you can find another server you can run on your windows box, or check to see if the server you are running is using rfc868, rfc1305, rfc1361, or a later version of time services.
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