From: wing_lam@jossynergy.com
Date: Mon Jun 30 2003 - 01:18:19 GMT-3
Thx, Jay;
After I added 127.127.7.1 into th list of peer access-group, it works.
ntp access-group peer 12
ntp master 7
R8# sh access-l 12
Standard IP access list 12
permit 127.127.7.1 (2 matches)
permit 172.16.1.5 (105 matches)
Thx a lot for your information,
BBD (Big Black Dog)
Jay Hennigan
<jay@west.net> To: wing_lam@jossynergy.com
cc: ccielab@groupstudy.com
06/30/2003 11:50 Subject: Re: NTP problem
AM
On Sun, 29 Jun 2003 wing_lam@jossynergy.com wrote:
> Dear Group,
>
> I have a ntp problem, that even the router claims itself as master, it
> still fail.
>
> R8#sh run int loo 0
> Building configuration...
>
> interface Loopback0
> ip address 172.16.1.8 255.255.255.255
> end
>
> ntp authentication-key 1 md5 104D000A061843 7
> ntp authentication-key 2 md5 13061E01080356 7
> ntp authentication-key 3 md5 03075218050072 7
> ntp authentication-key 4 md5 14141B180F0B7E 7
> ntp authenticate
> ntp clock-period 17179484
> ntp source Loopback0
> ntp access-group peer 12
^^^^^^^^^^^^^^^^^^^^^^^^
> ntp master 7
> end
>
> R8#sh ntp st
> Clock is unsynchronized, stratum 16, no reference clock
> nominal freq is 250.0000 Hz, actual freq is 250.0056 Hz, precision is
2**18
> reference time is C2A93D72.52850DCA (10:26:58.322 UTC Sun Jun 29 2003)
> clock offset is 0.0000 msec, root delay is 0.00 msec
> root dispersion is 0.02 msec, peer dispersion is 0.02 msec
>
> The following is my debugging.
>
> R8#
> 2w6d: NTP: nlist 0, allow 0, found 0, low 0.000000, high 0.000000
> 2w6d: NTP: no select intersection
> 2w6d: NTP: no select intersection
>
> What is the problem?
Is the internal NTP loopback reference (127.127.7.1, not lo0) permitted by
access-list 12?
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