From: ccie2be (ccie2be@nyc.rr.com)
Date: Thu Jul 15 2004 - 14:03:07 GMT-3
Hey Ken,
Personally, I wouldn't worry about sub-optimal routing ( of course, I
haven't yet passed the lab, so maybe I should be concerned about that). If,
but only if, the issue arises, I would ask the proctor.
As many here have said repeatedly, don't over think or read into the
requirements. If you require reachability and ahve achieved reachability,
you've fulfilled the task requirements whether or not you've optimized
routing.
But, if in doubt, ask the proctor. Personally, I suspect candidates don't
ask the proctors enough questions. True, you may have to take a moment to
figure out how to phrase your question so that the proctor can give you
useful info, but I think that's well worth the time.
HTH
----- Original Message -----
From: "Kenneth Wygand" <KWygand@customonline.com>
To: "Kenneth Wygand" <KWygand@customonline.com>; <ccielab@groupstudy.com>
Sent: Thursday, July 15, 2004 12:40 PM
Subject: Re: Suboptimal Routing?
> Surely someone has an opinion on this or can explain why this is (or
should be) done.
>
> Thanks in advance,
> Ken
> --------------------------
> Sent from my BlackBerry Wireless Handheld
>
>
> -----Original Message-----
> From: nobody@groupstudy.com <nobody@groupstudy.com>
> To: ccielab@groupstudy.com <ccielab@groupstudy.com>
> Sent: Wed Jul 14 20:57:34 2004
> Subject: Suboptimal Routing?
>
> I have a generic question regarding suboptimal routing on the CCIE lab.
>
> Suppose I have both RIP and OSPF running in my network. I have two
routers that are running both RIP and OSPF (on the RIP/OSPF border). One of
these routers is mutually redistributing RIP and OSPF (let's call this
"Router 1"). Without changing distances or filtering, routes that originate
in RIP and are redistributed by "Router 1" into OSPF will be received by
"Router 2" in OSPF. So now Router 2 will know of routes from the RIP domain
through both it's own RIP routes and also through the OSPF routes. Of
course, the distance of OSPF is less than RIP, so it will default to choose
the routes that "go all the way around the world" to get back into the RIP
domain.
>
> This is a clear case of "suboptimal routing" but still provides full IP
connectivity. Every single practice lab I've ever come across has always
"treated" this situation by using some mechanism (filtering, distance, etc)
to cause the native RIP routes to be preferred through RIP as opposed to the
"all the way around the world" OSPF routes.
>
> However, none of these labs ever say "ensure you avoid suboptimal
routing". I've also heard many times that the lab is "not testing
real-world best practices, only that you meet the requirements of the
question". Well, if the question states I must have IP reachability, then
why should I bother fixing suboptimal routing. Sure, it will display to the
proctor that I understand it and I know what I'm doing, but
why -specifically- do I have to do it to get points on my exam? If it
doesn't say to avoid this, why should I waste my time?
>
> Thanks in advance, as I really look forward to your responses.
> Ken
>
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