From: Gary Duncanson (gary.duncanson@googlemail.com)
Date: Sun Aug 05 2007 - 07:19:47 ART
Many of the the practice labs I have worked on do not seem to provide full
connectivity by IGP and redistribution alone. Once iBGP is introduced into
the mix full connectivity usually ensues. Of course you need to consider no
synchronisation.
I would say assess pretty quickly if you *think* IGP and redistrib should
give you full connectivity and if you think not, press on with BGP etc and
try and get there. You can waste a lot of time in practice labs trying to
fix things that are not broken and trying to get things working that you
don't need or are already working or are going to work later in the lab.
This seems to be half of the game in lab prep, understanding the scenario
and what the technology should or shouldn't do for you given it's operation,
it's dependencies of other protocols i.e iBGP and IGP, next-hop-self or eBGP
and multihop, and the constraints you have to work with.
Anyway..it's a lovely sunny Sunday morning. Better study QoS now *grumble*
;)
Gary
----- Original Message -----
From: "Djerk Geurts" <djerk@djerk.nl>
To: <ccielab@groupstudy.com>
Sent: Saturday, August 04, 2007 8:32 PM
Subject: RE: Is BGP full connectivity required?
> As a twist, say one is supposed to filter received routes so a few routers
> do not have full visibility anymore. And the question doed not state that
> this is ok (intentional, as it conflicts the ful connectivity
> 'directive').
> But BGP could reinstate connectivity...
>
> My take on the matter is: If in doubt check whether you've not missed
> anything and ask the proctor. (And don't ask open questions)
>
> But what is the general take here? Should IGP provide full connectivity
> and
> is BGP a bolt on (EGP only). Or is iBGP a valid substitute for the
> 'lacking'
> 'IGP' route distribution...
>
> Djerk
>
>> -----Original Message-----
>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
>> Behalf Of Toh Soon, Lim
>> Sent: zaterdag 4 augustus 2007 10:24
>> To: ccielab@groupstudy.com
>> Subject: Is BGP full connectivity required?
>>
>> Hi All,
>>
>> Say, at the beginning of the lab it is stated that upon
>> completion of this
>> lab you should have full IP connectivity.
>>
>> I take it to mean full connectivity in IGP. Should I also consider
>> configuring full connectivity for BGP routes? However, it is
>> not mentioned
>> explicitly under the BGP section that we need to.
>>
>> Please advise.
>>
>>
>> Thank you.
>>
>> B.Rgds,
>> Lim TS
>>
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