From: Chris Larson (clarson52@comcast.net)
Date: Tue Apr 06 2004 - 22:25:01 GMT-3
Here is a link a cisco doc as well.
http://www.cisco.com/en/US/tech/tk869/tk769/technologies_white_paper09186a0080117070.shtml
----- Original Message -----
From: "Chris Larson" <clarson52@comcast.net>
To: "Tim Last" <packtmon@yahoo.com>
Cc: <ccielab@groupstudy.com>
Sent: Tuesday, April 06, 2004 7:23 PM
Subject: Re: NTP
> I think the rfc calls the mode symmetric from what I recall. It is
> equivalent to the peer mode on a Cisco router. If I remember correctly,
that
> is what would be required to sync time and be synced or act as a client
and
> a server. It makes sense. For example, at the enterprise level you may
want
> all your devices to get time from an internal source or 2. Those 2 sources
> would be peered with some outside stratum 1 or 2 sources and each other.
In
> the event of a disconnect with the outside for whatever reason your
devices
> will still source time from the 2 internal NTP devices and they will
> continue to agree on a time to serve until their external peers are
> reachable again in which case they will slowly drift to an agreement with
> them.
>
>
> There is a summary paper about it at www.supertechnetworks.com I believe
in
> the library. If not I will get it there.
>
>
>
> Chris
>
>
>
> ----- Original Message -----
> From: "Tim Last" <packtmon@yahoo.com>
> To: "Group Study" <ccielab@groupstudy.com>
> Sent: Tuesday, April 06, 2004 12:46 PM
> Subject: NTP
>
>
> > Hi guys,
> >
> > Does it make any sense for a rtr to be both a NTP master and client at
the
> same time?
> >
> > For example,
> >
> > Internet---------R1(NTP Master)------------R2(NTP client -gets sync from
> R1)
> >
> > In this example, R1 gets it's time from an authoritative time source on
> the Internet, so R1 is an NTP client. But, R1 is also configured as a NTP
> Master from which R2 gets it's time.
> >
> > Thanks in advanced
> >
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