From: Hobbs (deadheadblues@gmail.com)
Date: Wed Nov 05 2008 - 02:11:51 ARST
This is how I started to tackle it...
1) Break it down:
Mark it, Classify it, Police/Shape it
2) Then lab it:
Make a small lab (dynamips!), perhaps 3 routers on a LAN with one as the
"gateway" to another router.
R1 ------R3------R4
R2 /
Then practice different ways of marking traffic from R1 and R2 (using port
numbers (copy tftp/http, telnet, ip addresses, TOS byte) use extended ping.
Learn how to prioritize. Making labs like this REALLY helped get a grasp on
QoS. Start SMALL then make your lab more progressive incorporating MQC and
other methods like FRTS, etc.
3) Read DoCCD, that QoS cert book
also, if you have specific scenarios, please post them to the group or even
unicast me. to be honest, i made a determined effort to learn qos until my
head popped. and my head hasn't popped yet and i feel smarter
On Mon, Nov 3, 2008 at 10:13 PM, Scott M Vermillion <
scott_ccie_list@it-ag.com> wrote:
> QoS is as "down-in-the-weeds" as any networking concept/topic gets, IMHO.
> Problem is that it's so complex in its actual implementation, that we have
> to resort to talk of non-existent "buckets" and so forth. Thus, if you
> don't have a *very solid* command of the theory that lies beneath the
> surface, absolutely no amount of lab time will get you over the hump. It's
> simply one of those aspects of the CCIE that demand both hard-core book
> time
> and hard-core lab time, period without exception.
>
> I can't imagine having stepped into the lab without a couple of good
> cover-to-cover reads of "Cisco QoS Exam Certification Guide" (now in second
> edition by Wendell Odom). The graphics are as good as any that have ever
> been rendered in support of complex technical theory. Naturally you also
> need your fair share of time on the CLI following this (or some equivalent)
> read. But just trying to somehow muscle your way through QoS sans the
> investment in theory is quite a long-shot in my view. You're almost
> certain
> to be thrown by the devil in the details of the task language in all but
> the
> simplest of cases.
>
> Incidentally, if you just can't, for whatever reason, bring yourself to
> invest the time or the cash in this book, Cisco's documentation of QoS is
> also worthy of its share of your lab prep investment. Something like this,
> at a very brief 32 pages, could keep you busy for hours on end:
>
>
> http://www.cisco.com/en/US/docs/internetworking/technology/handbook/QoS.html
>
> But for every one thing you learn from the above, you'd learn a hundred
> from
> the book (and subsequent lab time).
>
> Finally, I'd like to suggest "Inside Cisco IOS Software Architecture" as an
> "if you can possibly find the time" book to consider. I don't think I got
> around to reading it until after the lab, but it does help to tie together
> some things and to demystify some of the more abstract concepts. Not
> strictly speaking necessary by any stretch of the imagination, but I can
> certainly see where some of the insight on offer would build confidence
> heading into the lab.
>
> Come to think of it, I might just hit both of the above recommended texts
> in
> the coming handful of weeks...
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Administrator
> Sent: Monday, November 03, 2008 8:01 AM
> To: ccielab@groupstudy.com
> Subject: QOS Advice
>
> Hi there, I am looking for advice and I feel this is the best place for
> it.
>
> I am horrible with QOS, it is a weakness that I have always had. I feel
> like
> I may always have it. In my daily job I use QOS everyday, but use
> Packeteers
> instead of the CISCO CLI. What is the best way to approach QOS in order to
> really learn it. Should I take a global knowledge course, or the CCIE 360,
> or
> CCIE 2.0, or what.
>
> I am looking at getting my R&S, have tried and failed it a couple of times.
> My big weakeness is QOS and more and more, I really want to nail QOS. I
> just
> dont know how to go about it anymore. I am sort of a lab rat, I dont know
> that I can read a book and snap my fingers and have it all. I just dont
> seem
> to retain things from a book alone. I need something dynamic. I dont
> know
> what I need actually. I know I need to learn QOS and I have been at this
> so
> long, that I have become frustrated lost when it comes how to learn again
> !!
>
> I am really energized about the CCIE 2.0 because I think it may do what I
> need, and target my weakness.
>
> I would like to hear what the group says.
>
> Thanks for the help.
>
>
> Blogs and organic groups at http://www.ccie.net
>
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