[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: ntpdate[5498]: no server suitable for synchronization found




Thanks Rick.
That was the problem of firewall.

~Anup


----- Original Message ----- From: "Rick Thomas" <rbthomas55@pobox.com>
To: "anup" <anup.behare@einfochips.com>
Cc: <debian-user@lists.debian.org>
Sent: Monday, June 18, 2007 2:03 PM
Subject: Re: ntpdate[5498]: no server suitable for synchronization found


It's starting to look like you have firewall problems.

Is port 123 (ntp) allowed through your organizational firewall?

If not, you may need to talk to your network administrators.

Rick

On Jun 18, 2007, at 12:53 AM, anup wrote:

Yes I am in Asia.
I picked up three server from the script as fallows.
202.234.64.222
124.10.47.8
152.118.24.8
And run the ntpdate command, But still i am facing the same problem and got the following Error.

[root@localhost etc]# ntpdate -ud 152.118.24.8
18 Jun 10:08:55 ntpdate[8675]: ntpdate 4.2.0a@1.1190-r Mon Oct 11 09:10:21 EDT 2004 (1)
Looking for host 152.118.24.8 and service ntp
host found : uicsgtw.cs.ui.ac.id
transmit(152.118.24.8)
transmit(152.118.24.8)
transmit(152.118.24.8)
transmit(152.118.24.8)
transmit(152.118.24.8)
152.118.24.8: Server dropped: no data
server 152.118.24.8, port 123
stratum 0, precision 0, leap 00, trust 000
refid [152.118.24.8], delay 0.00000, dispersion 64.00000
transmitted 4, in filter 4
reference time:    00000000.00000000  Thu, Feb  7 2036 11:58:16.000
originate timestamp: 00000000.00000000  Thu, Feb  7 2036 11:58:16.000
transmit timestamp:  ca208ae3.c947bedb  Mon, Jun 18 2007 10:08:59.786
filter delay:  0.00000  0.00000  0.00000  0.00000
         0.00000  0.00000  0.00000  0.00000
filter offset: 0.000000 0.000000 0.000000 0.000000
         0.000000 0.000000 0.000000 0.000000
delay 0.00000, dispersion 64.00000
offset 0.000000

18 Jun 10:09:00 ntpdate[8675]: no server suitable for synchronization found


Is it necessary to access time server only on Live server in my organization or i can access it on internal network PC?



----- Original Message ----- From: "Rick Thomas"  <rbthomas55@pobox.com>
To: "anup" <anup.behare@einfochips.com>
Cc: <debian-user@lists.debian.org>
Sent: Sunday, June 17, 2007 10:54 AM

Subject: Re: ntpdate[5498]: no server suitable for synchronization  found

I assume you are in Asia. If so, run the following script and examine the output. Pick three hosts that look best and use them in place of "3.asia.pool.ntp.org".

Script:
--------cut here---------------
for i in 0 1 2 3
do
host $i.asia.pool.ntp.org
done | while read x
echo ""
do y="$(echo $x | sed 's/^.*has address //')"
ping -c10 -q $y
host $y
done
--------cut here---------------
Criteria for a "good" host:
no more than 10% packet loss.
max round trip time is acceptably low

deviation (mdev or stddev, depending on which version of ping) of round trip time is acceptably low.

Enjoy!

 Rick



- This message has been scanned for viruses, spam and dangerous content by www.CleanMailGateway.com, and is believed to be clean.




Reply to: