From: Gary Duncanson (gary.duncanson@googlemail.com)
Date: Wed Nov 21 2007 - 15:50:49 ART
Hello Peter,
I thought you had left the list. I used to like your posts and found some of
the material you produced for certificationzone and other publications
really interesting. I recall the email you posted about you passing your
CCIE a few years ago which is in the archives somewhere. The methodology you
used for preparing for the CCIE was really good and as relevent today as it
has ever been.
Regards
Gary
----- Original Message -----
From: "Peter Van Oene" <petvan@gmail.com>
To: "Cisco certification" <ccielab@groupstudy.com>
Sent: Wednesday, November 21, 2007 4:56 PM
Subject: Re: synchronization ibgp amd igrp
>I love that cisco tests on BGP synch ;-) what a useful feature that
> is. I'm sure hiring managers are happy that CCIE's can be expected to
> understand technology that hasn't been remotely relevant for well over
> a decade. Here is a useful application of your time. SNA is way more
> relevant.
>
> P
>
> On Nov 20, 2007 10:21 AM, Anthony Sequeira
> <Anthony_Sequeira@skillsoft.com> wrote:
>> First - make sure you completely understand the synchronization rule of
>> BGP. This rule states...
>>
>> "A BGP router should not use or advertise to an external neighbor, a
>> route that is learned from IBGP unless the route is local or the router
>> learns it from an IGP."
>>
>> I always remembered this by thinking about BGP needing to be in
>> synchronization with the underlying IGP.
>>
>> BGP synchronization is off by default in IOS release 12.2(8)T and later.
>> Earlier releases had it turned on by default. I presume that it used to
>> be on by default because for a long time it was fine to redistribute BGP
>> routes into the underlying IGP and a full mesh of IBGP was not
>> considered necessary.
>>
>> Once you FULLY understand the rule, it should not present any fears for
>> you in the lab exam.
>>
>> For example, if they were to have you turn ON synchronization on the
>> routers, and you are having trouble with prefix advertisement, then you
>> would know where to look. Perhaps you were supposed to have the prefix
>> in question advertised in an IGP somewhere!
>>
>> Anthony J. Sequeira
>> #15626
>> Recert Required? No Problem!
>> http://www.netmasterclass.net/CCIE/Self-Paced-Program/Written
>>
>>
>>
>> -----Original Message-----
>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>> shady darwish
>> Sent: Tuesday, November 20, 2007 9:39 AM
>> To: Cisco certification
>> Subject: sychronization ibgp amd igrp
>>
>> when do we have to use synch and why and when we don't
>>
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