Re: OSPF router-id and net 0.0.0.0 in the LAB

I always obey what the lab says. If it doesn't specify, then I check to
see if other Loopbacks are required (because they could change router-ids
later); if not; I do not specify a routerid...

On Wed, Aug 11, 2010 at 7:08 AM, Anthony Sequeira <asequeira_at_ine.com> wrote:

> Yeah - I should have pointed out how I handle things if I am the lab
> canidate.
>
> If they have me do nothing with Router ID - I do nothing. I am comfortable
> with this as I am keenly aware of when they might create an issue with it.
>
> As for network 0.0.0.0 255.255.255.255 area X, I never use this command
> unless I am forced to. Some students do use it when appropraite, however.
>
> ________________________________________
> From: Marko Milivojevic [markom_at_ipexpert.com]
> Sent: Wednesday, August 11, 2010 12:18 AM
> To: Anthony Sequeira
> Cc: Kambiz Agahian; Jack Router; Cisco certification
> Subject: Re: OSPF router-id and net 0.0.0.0 in the LAB
>
> I'm with Anthony on this one. I wouldn't count on being explicitly
> told what to do with router-id. Sometimes things need to be understood
> to be solved correctly. There are things that can interfere with OSPF
> router-id selections and those interferences are fair game for the lab
> exam.
>
> Now, as far as the original question about setting router-id manually,
> my recommendation is: Unless you are explicitly told NOT to set it
> manually, do it. If you are told NOT to do it - don't.
>
> Using "network 0.0.0.0 255.255.255.255 area X" is dangerous, as others
> have pointed out. If you are certain that there will not be additional
> interfaces later in the lab that are not supposed to be advertised
> into OSPF, this is a perfectly valid solution of the task.
>
> --
> Marko Milivojevic - CCIE #18427
> Senior Technical Instructor - IPexpert
>
> FREE CCIE training: http://bit.ly/vLecture
>
> Mailto: markom_at_ipexpert.com
> Telephone: +1.810.326.1444
> Web: http://www.ipexpert.com/
>
> On Wed, Aug 11, 2010 at 01:51, Anthony Sequeira <asequeira_at_ine.com> wrote:
> > First of all - the word ALWAYS and the CCIE lab tasks simply do not often
> get along - thank goodness.
> >
> > Second of all - when I am a proctor and we have written a lab that does
> not ever mention Router ID for OSPF and a candidate asks me what to do about
> it - my answer - "keep it simple".
> >
> > So I am afraid I cannot agree with either statement provided here.
> >
> > Sent from my iPhone
> >
> > On Aug 10, 2010, at 9:21 PM, "Kambiz Agahian" <aussiecert_at_gmail.com>
> wrote:
> >
> >> Jack,
> >>
> >> The OSPF router-id is one of the things that they always tell you what
> to do
> >> about. If not then that's a fair proctor question.
> >>
> >> HTH
> >> Kambiz Agahian
> >>
> >> CCIE Instructor/Consultant
> >> M.Eng Telecom, CCIE# 25341, CCSI# 33326, MCSE, MCSA
> >>
> >>
> >> On Tue, Aug 10, 2010 at 1:57 PM, Jack Router <pan.router_at_gmail.com>
> wrote:
> >>
> >>> Hello,
> >>>
> >>> In the LAB:
> >>> Is it safe to assign OSPF router id on a router even if not instructed
> ?
> >>> Also, if task just says "configure R1 in OSPF area 0", is it safe to
> type
> >>> "net 0.0.0.0 0.0.0.0 are 0"
> >>> Did you or will you use those commands ?
> >>>
> >>> Thanks,
> >>>
> >>>
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> >>>
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> >>
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> >
> >
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>
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Received on Wed Aug 11 2010 - 13:03:38 ART