Re: Timestamp

["Nataniel Klug" <nata cnett com br>]

    Kenneth,

    I actualy have a Cisco 1600 Router in my ISP. Where can I find information about
configuring my Cisco as a clock server?

Nataniel

----- Original Message -----
From: "Kenneth Goodwin" <kgoodwin datamarktech com>
To: <enigma-list redhat com>
Sent: Thursday, November 21, 2002 12:15 PM
Subject: RE: Timestamp


: actually, make one  of your servers a Primary stratum level 2 or 3 clock
: source and sync itself to a couple of stratum level one or preferably level
: TWO clock sources (Search for NTPD for more info and manuals and a list of
: stratum
: level one and two clock providers out on the Internet)
:
: Sync two others in a stratum level 2 or 3 cluster with the primary and have
: them use Multicast or Broadcast
: services to provide clock time to your other hosts. This is a three node
: time cluster that will sync with itself
: even if the internet source goes down.
:
: Then setup NTPD on the rest of the boxes as clients using multicast or
: broadcast to Receive the time updates from the primary server and it's two
: secondarys.
:
: NTPDATE is too one time to use in CRON and takes a while to resolve times.
: Also one clock source server only configs tend to be prone to failures
: elsewhere when they crash, better to have few main local clock sources
: synching to each other and a couple of others out on the Internet.
:
: If you have a cisco router on your internet, it can setup to be a stratum 2
: primary NTP clock server and also filter via access lists time protocol
: packets such that they are only allowed from designated source IP's.
:
:
: ++> -----Original Message-----
: ++> From: enigma-list-admin redhat com
: ++> [mailto:enigma-list-admin redhat com]On Behalf Of Nataniel Klug
: ++> Sent: Thursday, November 21, 2002 7:06 AM
: ++> To: enigma-list redhat com
: ++> Subject: Re: Timestamp
: ++>
: ++>
: ++>     Andrew,
: ++>
: ++>     You mean that if I use one of my boxes as a clock
: ++> server, I will have a perfect
: ++> syncronize in the others? I will try this.
: ++>
: ++> Nataniel
: ++>
: ++> ----- Original Message -----
: ++> From: "Andrew Kelly" <akelly transparency org>
: ++> To: <enigma-list redhat com>
: ++> Sent: Thursday, November 21, 2002 8:44 AM
: ++> Subject: Re: Timestamp
: ++>
: ++>
: ++> : What about using ntpd instead? Run the deamon on one box, pointing
: ++> : at a stratum 1 server. Then you can call ntpdate on that box
: ++> : (now stratum 2) using cron.
: ++> :
: ++> :
: ++> : Nataniel Klug wrote:
: ++> : >
: ++> : >     Hello,
: ++> : >
: ++> : >     I syncronize my boxes using rdate. I to a comand likle this:
: ++> : >
: ++> : > File: /etc/crontab
: ++> : > 30 6 * * * root rdate -s ntp0.fau.de
: ++> : > 31 6 * * * root /usr/sbin/setclock
: ++> : >
: ++> : >     But in one of my box I receive a message that
: ++> external machines can not determine
: ++> the
: ++> : > clock of that box, so they can not syncronize files or
: ++> anything. It is generatin an
: ++> error
: ++> : > in my MRTG Monitoring Tool with the timestamp wrong.
: ++> Can I solve this?
: ++> : >
: ++> : > Best regards,
: ++> : >
: ++> : > Nataniel Klug
: ++> : > www.cnett.com.br
: ++> :
: ++> : --
: ++> : Andrew Kelly
: ++> : IT
: ++> : Transparency International
: ++> : Otto-Suhr-Allee 97/99
: ++> : 10585 Berlin, Germany
: ++> : Tel: +4930 3438 2026, Fax: +4930 3470 3912
: ++> : AKelly transparency org
: ++> :
: ++> :
: ++> :
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: ++> : enigma-list redhat com
: ++> : https://listman.redhat.com/mailman/listinfo/enigma-list
: ++> :
: ++>
: ++>
: ++>
: ++>
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