RE: Misc. CCIE SP questions

From: Jared Scrivener (jscrivener@ipexpert.com)
Date: Fri Feb 13 2009 - 18:09:57 ARST


Yep, that'd be a safe practice (unless the lab specifies otherwise).

I generally recommend to my students to do it on all IBGP peerings unless
told otherwise so that with the pressure of the lab they aren't thinking
about whether or not it is necessary and trying to troubleshoot unreachable
next-hop issues. It can create sub-optimal routing within an AS though, if
the path to get to the IBGP advertising router is different from the path to
get to the EBGP advertising router (which is why it isn't done by default).

Cheers,

Jared Scrivener CCIE3 #16983 (R&S, Security, SP), CISSP
Technical Instructor - IPexpert, Inc.
Telephone: +1.810.326.1444
Fax: +1.810.454.0130
Mailto: jscrivener@ipexpert.com

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Kasper Adel
Sent: Friday, 13 February 2009 2:34 PM
To: Shaughn Smith
Cc: Cisco certification
Subject: Re: Misc. CCIE SP questions

Thanks guys.

Would it be a safe practice to configure all the bgp neighbors in the exam
with next-hop-self, whether i/e-BGP or i/eMBGP

Regards,
Kas

On Sun, Feb 1, 2009 at 12:40 AM, Shaughn Smith <
Shaughn.Smith@za.verizonbusiness.com> wrote:

> Roman answered the other questions very well, so will leave those alone.
>
>
>
> Answers inline.
>
>
>
>
>
>
>
> 6) What could go wrong if i didnt configure bgp or ospf router-ID ?  *For
> BGP and OSPF on the same router and both being in an "UP State" it is
> recommended that the Router-ID's that are configured are the same for both
> process's. Read RFC 1745 for more details. There are other reasons aswell.
I
> would check the documentation and Cisco's website for more info *
>
>
>
>
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> 7) Could anything go wrong if i didnt configure passive-interface under
RIP
>
>
> or any IGP for interfaces that will not receive routing info?  *Only do
> this if they ask you to. You need to keep in mind any "future" changes in
> the network and how your commands will affect anything going forward. *
>
>
>
> 8) What type of problems could "ip pim dr-priority 0" solve in the exam
>
> other than the obvious (setting the priority)?  *This command is used to
> set the priority for which a router is elected as the designated router*,
> *nothing else. I would assume they would normally tell you which router
> they want to be the DR ***

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