From: Radioactive Frog (pbhatkoti@gmail.com)
Date: Fri Jan 02 2009 - 12:30:50 ARST
Hi Ed,
'ntp trusted-key 1' is to tell router which key is valid for NTP
authentication.
Mind you, ntp server will still be syncing time with other non-authenticated
clients. e.g. client not configured to use authentication with server.
The only way to do that is to apply ACL.
HTH
-Frog
CCIE voice#21569
On Sat, Jan 3, 2009 at 12:10 AM, Ed Man <networkexpert08@gmail.com> wrote:
> Hi Group,
>
> Got confused when labbing with NTP...
>
> Server:
> ntp authentication-key 1 md5 CISCO 0
> ntp trusted-key 1
> ntp master 4
>
> Client:
> ntp authentication-key 1 md5 032772382520 7
> ntp authenticate
> ntp clock-period 17179828
> ntp server 1.1.1.1 key 1
>
>
> If "ntp trusted-key 1" is removed from server, client can synchronized with
> server.
>
> My question is that do we really need server to have "ntp trusted-key 1"
> configured.
>
> Thanks
> Ed.
>
>
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