From: Claudine DEMAR (lkcnet00@hotmail.com)
Date: Wed Sep 04 2002 - 12:13:37 GMT-3
Darren,
Thanks for your answer. I'm not sure of what you mentionned about multiple
RPs redistributing on the same router. I thought "split-horizon" (or what
the Cisco book TCP/IP Routing&Switching calls so) would prevent this to
happen, regardless of the distance of the RPs.
RP1, RP2, RP3 running on the same router and provided that the different RPs
do not share any prefixes, a RP1 would never redistribute to RP2 routes that
it would have learnt from RP3. Please correct me if I'm wrong.
Thanks,
Claudine
>From: "Olive, Darren" <Darren.Olive@globalcrossing.com>
>Reply-To: "Olive, Darren" <Darren.Olive@globalcrossing.com>
>To: "'Claudine DEMAR'" <lkcnet00@hotmail.com>, ccielab@groupstudy.com
>CC: ccie@cisco.com
>Subject: RE: redistribution
>Date: Wed, 4 Sep 2002 10:00:27 -0400
>
>Claudine
>
>By 'one-point-redistribution' I assume that you mean redistribution between
>only two routing protocols on a single router. If multiple routing
>protocols
>& redistribution are in effect on a single router, the possibility arises
>for routes to be re-injected back into the source routing domain because of
>the various administrative distances of the routing protocols involved. I
>would be inclined to configure filtering to allow the routing updates to
>travel the one required direction only.
>
>Thanks
>Darren
>
> -----Original Message-----
>From: Claudine DEMAR [mailto:lkcnet00@hotmail.com]
>Sent: 04 September 2002 13:59
>To: ccielab@groupstudy.com
>Cc: ccie@cisco.com
>Subject: redistribution
>
>Hi.
>
>I would like to know whether CCIE candidates are expected to configure
>route-maps to filter redistribution between routing protocols even if we
>are
>
>in a one-point-redistribution scenario (there's only one common router
>between the different routing domains).
>
>Should those route-maps be configured systematically even if there's no
>need
>
>for them and even if there's no such mention in the lab instructions ??
>
>Thanks,
>
>Claudine
>
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