Re: SP LAB Done - Update – Very important read

Very good info and helpfull
thanks for posting such a useful words
once again congrats for passing

Prakash Kalsaria
http://prakashkalsaria.wordpress.com

On Tue, Jun 15, 2010 at 1:56 AM, Dayaa Al Zoubi <cciecool_at_gmail.com> wrote:

> Hi Group
>
> Would like to thank all those who replied to my post , going forward I
> would like to update my post and make it beneficial to every member .
>
> *First OEQ *
>
> Mpls , please read the MPLS fundamental for at least 3 times
>
> BGP , how it behaves in unicast , multicast and VPN , MBGP and multi
> hope
> BGP ,
>
> Lab it up and see the next hope , send aggregate address and see how it
> looks in different areas , know how to use BGP attributes , BGP label size
> ,
> RR , confederation and label binding
>
> ISIS expect a question from this protocol foe sure since it is more
> relevant to SP than OSPF , so please cover it well , ISIS levels , circuit
> ,
> areas , system ID , difference of L1 / L2/L1-L2 hello , DIS , I mean as
> much as you can of this protocol
>
> Ospf - Areas , DR , net types , how it behaves when redistributed in
> bgp throw
> the VPN with different process ID and domain ID , LSA types , sham link ,
> and .
>
> TE , QOS and multicast
>
> Frame relay , know the DLCI defaults and ranges , DE , how it is carried
> In
> the SP network , connectivity to sp , LMI , encapsulation and ..
>
> AT M , many in this protocol , however focus more on what relevant to SP ,
> like atm types AAL , UNI NNI , ILMI , PNNP , ATM integration with MPLS ,
> and
>
> Please do not visit the SP lab without minimum knowing the above .
>
>
>
> *Second the LAB *
>
> I am sure those who are ready for the lab have solved a complex labs ,
> like
> how to configure IGP , MPLS , BGP , VRF , TE , PPPOE , ATM , MBGP and ,
> three options of the inter- AS , multicasting and RPF failure , please
> understand this well specially when it is coupled with TE , so multicast
> and
> you have a tunnel , why u would have RPF failure and how to solve it .
> intra as multicast , VPN multicast , QOS , security .
>
> Once u have practiced this u will go to the lab and find a strange behavior
> , examples
>
> 1. MPLS configured correct but no labels
>
> 2. VRF not working
>
> 3. Your LDP broke sudden
>
> 4. The switch not working correct
>
> 5. ISIS behaving strange
>
> 6. No error but show run , then the command is not set ( OHHH ) ,
> like you configure a parameter under the interface and no error reporting
> , then immediately sh run int , will not show the command entered
>
> So you will panic and losing the control .
>
> My advice
>
> Most of what been mentioned above is a bugs in cisco OS and will appear
> only
> in a special case , like when you configure ISIS and then you put TE , or
> any two or three options together .
>
> They designed the lab in a way to reproduce those bugs so they will drive
> the candidate like a victim to reproduce the bug .
>
> Solution is to lab it in a similar os , use online racks and see what will
> be different than it is in your dynamips .
>
> Many problems can be solved by a reload , like you configure MPLS correct
> but you cannot see the labels , so please reload , I would say I have
> reloaded 5 times .
>
> Finally learn how to use the notepad , most of the lab is preconfigured so
> you need just to go throw the config and know the problems .
>
> I have managed to finish before the lunch and I left the lab more than hour
> before tha lab finish because I was so focus in the first 4 hours and
> lost
> my energy .
>
> Smokers please reduce your dependence on the segarate before the lab ,
> you
> are not allowed to smoke for 8 and half hours
>
> Sleep very very very well
>
> Manage your stress and do not let a bug out you down , move forward and
> once you are done with the full section reload and verify .
>
> Verify after each section to be sure you have meet the expectations .
>
> Remove any unnecessary config , I have seen this working in R&S but not in
> SP , like do not keep unused ACL , ip community list , Rout map ,
>
> Remove the aliase . , you do not want to any think to stop the script or
> the script to give a mismatch .
>
> Hope it will be a beneficiary for all folks who are ready for the SP .
>
> Good luck
>
> Dayaa
>
> Ccie 21450 R&S SP
>
>
>
>
>
>
>
>
>
> * *
>
>
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>
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Received on Tue Jun 15 2010 - 11:28:39 ART