Re: SP LAB Done - Update – Very important read

Nice recap!

On Tue, Jun 15, 2010 at 3:58 PM, Prakash Kalsaria <
kalsaria.prakash_at_gmail.com> wrote:

> 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
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > * *
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
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>
>
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Received on Wed Jun 16 2010 - 00:21:36 ART