Re: OER/PfR at lab exam?

Thanks Mohammad

On Wed, Apr 11, 2012 at 4:12 PM, Mohammad Khalil <eng_mssk_at_hotmail.com>wrote:

> One of the best resources for OER/PfR
> http://docwiki.cisco.com/wiki/PfR:Home
>
> Best Regards,
> Mohammad
>
> > Date: Wed, 11 Apr 2012 13:35:21 +0400
> > From: bdennis_at_ine.com
> > To: ccielab_at_groupstudy.com
> > Subject: Re: OER/PfR at lab exam?
> >
> > Since PfR/OER is relatively new to the lab exam it's not covered as much
> > as a topic like OSPF, MPLS VPNs, etc in most products. That being said
> > I currently spend at least one full day covering it in my 10 Day R&S
> > bootcamps and I cover it in-depth as getting 5 or 6 points on it in the
> > lab exam can be the difference between passing or failing. I start from
> > the basics (i.e. load balancing, PfR static & BGP route manipulation,
> > etc ) and work into the more advanced configurations (i.e. link groups,
> > fast mode, jitter probes, delay, PBR based upon DSCP, using PfR for sink
> > holing traffic, etc).
> >
> > To be honest there are a ton of strange, for lack of a better term,
> > quirks with PfR that can cause trouble when someone is just starting out
> > learning PfR. So although it may seem like a good idea for me to just
> > throwing you the labs from my bootcamp, that isn't going to be what you
> > really need to truly understand it. It would be like saying to me "Hey
> > Brian I want to learn MPLS VPNs" and I say "Here are a couple labs. Good
> > luck!". Think that will work? No.
> >
> > Here is just a few example of quirks with PfR: An access-list used with
> > a learn list can not match IP addresses but an access-list with a
> > oer-map should match IP addresses. When using fast mode with a learn
> > list you need to use a prefix list when also matching with an
> > access-list. Or how to configure PfR to do PBR unconditionally without
> > any OOP condition, etc, etc, etc.
> >
> > As I mentioned there are a lot of pitfalls with learning PfR due to the
> > fact it's a newer technology and went through a lot of changes in IOS
> > 12.4T. PfR is an awesome technology and I personally love it but it can
> > be complicated to learn for anyone starting out. I would venture to say
> > that is it one of the most complicated of any technology currently
> > covered in the lab exam. The documentation is 33% bigger than the OSPF
> > documentation and it's only getting larger with QoS being added and PfR
> > domains in future releases.
> >
> > I started a blog series on it (http://goo.gl/yH0ip) but have since
> > decided to just write a whole document covering PfR as the topic is just
> > too big to cover in a few blog posts. I currently have over 100 pages
> > and I'm hoping to release it around the end of the month. If anyone
> > would like a copy, free of charge of course, just let me know.
> >
> > Lastly if anyone wants to come see me cover PfR in person free of charge
> > just contact INE sales and ask to audit one day of my bootcamp. It's
> > normally covered on the 8th day of my bootcamp. I'm in Dubai this week
> > and covered PfR yesterday and have a private bootcamp next week but
> > after that I'm teaching in Washington, DC and Seattle next so feel free
> > to stop by.
> >
> > --
> > Brian Dennis, CCIEx5 #2210 (R&S/ISP-Dial/Security/SP/Voice)
> > bdennis_at_ine.com
> >
> > Internetwork Expert, Inc.
> > http://www.INE.com
> >
> > On 04/11/2012 02:35 AM, Ivan Hrvatska wrote:
> > > Hi,
> > >
> > > I just purchased ciscopress ccie r&s exam cert guide 4th edition,
> > > since I had 3rd in which there was nothing about OER and PfR. I must
> > > say that the quality of that subject in new edition of the book is
> > > really poor. One config example without any explanations and without
> > > any topology diagrams. Nothing that can help someone to understand the
> > > topic.
> > > So, my question is how deep this subject goes in potential task at
> > > exam? How much time should I spend on it since it can be very complex
> > > feature? The book says:
> > > "As you will see as you explore PfR more deeply, it is remarkably
> > > powerful. As you would expect, it also has many configuration options.
> > > For the CCIE R&S qualifying exam, you should understand the concepts
> > > of PfR and how it operates and its core functionality."
> > >
> > > Thanks.
> > >
> > >
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> > >
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Received on Wed Apr 11 2012 - 16:23:47 ART