From: Thomwin Chen (thomwin_chen@yahoo.com)
Date: Sun Aug 14 2005 - 22:46:12 GMT-3
Mushtaq,
CMIIW,
I think the correct NTP authentication configuration is like this :
at NTP client :
ntp authenticate
ntp authentication-key 1 md5 groupstudy
ntp trusted-key 1
ntp server 172.16.1.1 key 1
at NTP master :
ntp authentication-key 1 md5 groupstudy
ntp master
NTP authentication is used to authenticate the time source, not the recipient...
and also NTP synchronization will synchronize gradually not instaneously
Rgds,
Thomwin
"mushtaq A. Khan" <mak.ccie2b@gmail.com> wrote:
All,
Can anyone help in troubleshooting NTP synchronization? I'm trying to
test NTP to see if NTP client synchronizes correctly with NTP server.
I noticed that it works only when I try to change clock in client.
The client correctly synchornizes with server. It does not work, when
I change clock in Server. Can someone explain me the reason. Here is
the configuration I'm used:
Router(NTP Server):
clock timezone CST -6
clock summer-time CDT recurring
ntp authentication-key 1 md5 01100F175804 7
ntp authenticate
ntp trusted-key 1
ntp source Loopback0
ntp master 3
SW(NTP Client):
clock timezone EST -5
clock summer-time EDT recurring
ntp authentication-key 1 md5 05080F1C2243 7
ntp authenticate
ntp trusted-key 1
ntp clock-period 17179903
ntp source Loopback0
ntp server 132.1.4.4
Thanks,
M. A. Khan
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