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 problem

Hi, everybody!

Recently, I've tried to establish the NTP server on my Cisco 2811. I thought it quite easy, but after a couple of days I understood that the task is not as obvious as it seems.

There is part of my configuration related to NTP:

     ntp access-group peer 21

     ntp access-group serve-only 20

     ntp update-calendar

     ntp server xxx.xxx.xxx.xxx

     ntp server yyy.yyy.yyy.yyy prefer

     access-list 21:

          10 permit yyy.yyy.yyy.yyy

          20 permit xxx.xxx.xxx.xxx

     access-list 20:

          10 permit 10.0.0.0, wildcard bits 0.255.255.255

The problem itself is that users can only sync with my NTP server when I add them to the access-list 21 but it shouldn't be like that! It seems to me that option "ntp access-group serve-only" doesn't work at all.

Please help! Thanks in forward!

P.S. ios Version 15.1(1r)T4


Everyone's tags (4)
318
Views
0
Helpful
0
Replies
CreatePlease to create content