Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

NTP unsynchronize

Hi,

In my network, there are some routers can synchronize time from a server, but some can't synchronize it. all routers can ping that server. what's happen?

Thanks!

Samuel

3 REPLIES

Re: NTP unsynchronize

Hello Samuel,

what are you using as a time server ?

What happens if you try SNTP instead of NTP ?

Router#conf t

Router(config)#sntp server x.x.x.x

Can you post the output of 'show ntp associations' and 'show ntp status' of one of the routers that do not synchronize ?

Regards,

GNT

Hall of Fame Super Silver

Re: NTP unsynchronize

Samuel

There are a number of things that can cause some routers to not sync time from an NTP server. If the routers are configured with authentication for NTP a configuration error could cause failure to sync. There might be issues in the network between the client which fails and the server which could cause this symptom.

In addition to the suggestion by GNT to post the output of show ntp association I would suggest that it might be helpful to see the output of show ntp association detail. And the configuration of NTP on that router might also be helpful.

HTH

Rick

New Member

Re: NTP unsynchronize

NTP server is Linux,

how to check NTP is enable in Linux server?

137
Views
0
Helpful
3
Replies