Redhat Timeserver down? (Czornack)
wralphie at comcast.net
Wed Apr 7 12:28:57 UTC 2004
On Wed, 2004-04-07 at 02:28, Erik P. Olsen wrote:
> ** Reply to message from jludwig <wralphie at comcast.net> on Tue, 06 Apr 2004
> 21:06:13 -0400
> > On Tue, 2004-04-06 at 18:56, Brian Bober wrote:
> > > Janthao wrote:
> > > > I'm not sure if this is a problem with my machine or with the
> > > > timeserver. Does anybody else have problems with clock.redhat.com?
> > > >
> > > Yes, I have that problem too, but only last couple days.
> > If I remember, the ntp README, ntp protocol allows for the server to
> > ignore requests when heavily loaded (drop packets, sound familiar?). In
> > which event your machine ntpd will time out and try later at random
> > intervals.
> > Also in heavy traffic, if the sample jitter your machine receives is
> > more than 128mS over three seconds, the samples are discarded.
> > See the ntp README also man 1 ntpd
> It times out, you can't even ping it.
> Erik P. Olsen
Could you ever ping it? Most firewalls don't allow pinging since this
can lead to a Dos attack. (From fedora.redhat.com)
PING www.redhat.com (184.108.40.206) 56(84) bytes of data.
--- www.redhat.com ping statistics ---
12 packets transmitted, 0 received, 100% packet loss, time 11016ms
jludwig <wralphie at comcast.net>
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