Re: Peice of ADVICE from EXPERTS , 3 days left for LAB !!

I noticed a slight change in your signature :)
I guess that means you are now a Dual JNCIE. Combined with being a Quad CCIE and a CCDE!
Congrats!
Best Regards, Tolulope Ogunsina, CCIE x2 (R&S|Sec)

-----Original Message-----
From: Scott Morris <swm_at_emanon.com>
Sender: nobody_at_groupstudy.com
Date: Sun, 06 Feb 2011 10:01:57
To: <ccielab_at_groupstudy.com>
Reply-To: Scott Morris <swm_at_emanon.com>
Subject: Re: Peice of ADVICE from EXPERTS , 3 days left for LAB !!

Remember that a "bug in IOS on GNS3" is completely different than a "bug
in IOS". Things that you are presented with in the lab are
(intentionally) not brand new technologies.... They've been around for
a while, and the exams have gone through internal testing with multiple
people to assure that they do actually work.

Is it possible to trigger a bug they hadn't anticipated? Sure, because
your ENTIRE config may be different than what they did, and you may do
one thing that affects another. If you suspect anything like that,
involve the proctor ASAP. They may tell you to go look at your configs
again (which typically will tell you that they know what you did wrong
because they've seen it several times before, and it's self-induced).
If you still can't find it, let them know (nicely!) why you think it's a
bug and what you've done. If they agree, they will kick you off your
rack for a little while and will look at your routers/configs and test
it. If it is a bug, they'll let you know and you will likely get lost
time back (if you spent three hours doing this, good luck on that!) but
if they find it's your problem, you lose the time.

You may also decide to skip something any move on if it's not critical
(or band-aid it if it is critical) so that you know exactly which points
you have lost.

That's all part of your time management strategy. But generally
speaking you SHOULDN'T run into bugs.

Best of luck to you!

*Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,

CCDE #2009::D, JNCIE-M #153, JNCIE-ER #102, CISSP, et al.

CCSI #21903, JNCI-M, JNCI-ER

swm_at_emanon.com

Knowledge is power.

Power corrupts.

Study hard and be Eeeeviiiil......

On 2/6/11 4:46 AM, Asfer Shah wrote:
> Just one query, what do you guys suggest, because everyone is saying that
> this
> is a BUG in CISCO IOS
> so in that case what should a person do ?
>
> 1. Just paste the standard working configs verify the solution one by one ,and
> come out of the lab.
> 2. Do a work around which may deduct the marks because both the technologies
> don't work together at the same time
> 3. ask the proctor ? because he must know the bug , but again he can make your
> day worst by guiding you into a wrong way ?
> 4. Just drop one Section, lets say the internet and dont risk the entire
>
> MULTICAST because of that 0.0.0.0 default route :(
>
>
> please reply back since I have less then a week now :(, I hope I don't
> encounter into this situation in the real LAB ?
>
>> From: s_asfar_at_hotmail.com
>> To: scott_ccie_list_at_it-ag.com
>> CC: ccielab_at_groupstudy.com
>> Subject: RE: No SOLUTION till DATE for this SCNERIO ???? Challenging
> MULTICAST TASK ?? Please ADVICE
>> Date: Sun, 6 Feb 2011 06:37:15 +0000
>>
>> Thanks SCOTT,
>> Just one query, what do you guys suggest, because everyone is saying that
> this
>> is a BUG in CISCO IOS
>> so in that case what should a person do ?
>>
>> 1. Just paste the standard working configs verify the solution one by one ,
>> and come out of the lab.
>> 2. Do a work around which may deduct the marks because both the
> technologies
>> don't work together at the same time
>> 3. ask the proctor ? because he must know the bug , but again he can make
> your
>> day worst by guiding you into a wrong way ?
>> 4. Just drop one Section, lets say the internet and dont risk the entire
>> MULTICAST because of that 0.0.0.0 default route :(
>>
>>
>> please reply back since I have less then a week now :(, I hope I don't
>> encounter into this situation in the real LAB ?
>>
> =============================================================================
>> =====================================
>>> CC: markom_at_ipexpert.com; ccielab_at_groupstudy.com
>>> From: scott_ccie_list_at_it-ag.com
>>> To: s_asfar_at_hotmail.com
>>> Subject: Re: No SOLUTION till DATE for this SCNERIO ???? Challenging
>> MULTICAST TASK ?? Please help
>>> Date: Thu, 3 Feb 2011 17:19:57 -0700
>>>
>>> Oh, and also:
>>>
>>> Best luck with your rapidly approaching lab date!!
>>>
>>> ____________________________________________
>>> There are only 10 types of people in the world:
>>> Those who understand binary and those who do not...
>>>
>>> On Feb 3, 2011, at 5:07 , Scott M Vermillion wrote:
>>>
>>>> So I brushed up a little bit on my draft-rosen stuff this afternoon
>>>> (been nearly three years since I even thought about that mess!) and
>>>> then had a closer look at your configs. In truth, it will probably
>>>> take an SP CCIE or SP CCIE candidate to weigh in and help you out but
>>>> I will be happy to try. At the very least, I still feel very strong
>>>> in general mcast, if not MDT, specifically.
>>>>
>>>> Are you perchance running this in a Dynamips environment? If so, I'd
>>>> love to see that .net file. Also, you said you could share further
>>>> details, which would be most helpful. Probably more so to an SP type
>>>> than and R&S guy like myself but the more detail you post, the more
>>>> likely you are to entice someone knowledgeable into the problem! ;-)
>>>>
>>>> ____________________________________________
>>>> There are only 10 types of people in the world:
>>>> Those who understand binary and those who do not...
>>>>
>>>> On Feb 2, 2011, at 7:31 , Asfer Shah wrote:
>>>>
>>>>> Thanks
>>>>> Scoottt, I surely will try to check the tutorials but the problem is
>>>>> that Its
>>>>> very basic thing which is not coming up ?
>>>>> I am trying to run the Multicast in INTRA-AS between my two sites(R9
>>>>> and
>>>>> R7/R8) connected via MPLS - VPN's . (R4 is RP and client & R5 is
>>>>> SOURCE)
>>>>> Everything runs smoothly unless, I introduce the default route from
>>>>> the (R6)
>>>>> which is the internet gateway for my PE's of ABC Vpn's.
>>>>>
>>>>> Whenever the default route is injected my PE outgoing interface
>>>>> donot point
>>>>> towards the tunnel and starts to follow the 0.0.0.0 source !! which
>>>>> breaks my
>>>>> multicast communication and messes everything !
>>>>> I can share the details with you even further, I discussed this
>>>>> scenerio will
>>>>> couple of other CCIE's but somehow no one has managed to answer my
>>>>> solution ?
>>>>> thanks
>>>>>
>>>>> CC: markom_at_ipexpert.com; ccielab_at_groupstudy.com
>>>>> From: scott_ccie_list_at_it-ag.com
>>>>> To: s_asfar_at_hotmail.com
>>>>> Subject: Re: No SOLUTION till DATE for this SCNERIO ???? Challenging
>>>>> MULTICAST
>>>>> TASK ?? Please help
>>>>> Date: Wed, 2 Feb 2011 11:17:11 -0700
>>>>>
>>>>> So it looks as if you've got some vendor's full-scale SP lab up and
>>>>> running
>>>>> there. Lots of layers to an onion like that which are not going to
>>>>> be readily
>>>>> apparent with just a glance over the configs. It's also not evident
>>>>> from your
>>>>> text exactly what was working before the introduction of the default
>>>>> route
>>>>> came along and broke things. I see you've got a couple of 'ip igmp
>>>>> join-group' commands on your CEs but it's not clear to me what you
>>>>> were
>>>>> pinging - and from where - that worked and then later ceased
>>>>> working. What
>>>>> mcast troubleshooting have you done thus far?
>>>>> I try to keep my posts as vendor-neutral as possible but if you
>>>>> google
>>>>> "multicast troubleshooting" you will find a couple of very, very good
>>>>> tutorials out there. If you follow a logical process of validating
>>>>> all of
>>>>> your various control and data plane RPF checks, etc, you are bound
>>>>> to find the
>>>>> problem for yourself quickly...
>>>>> ____________________________________________There are only 10 types
>>>>> of people
>>>>> in the world:
>>>>> Those who understand binary and those who do not...
>>>>> On Feb 2, 2011, at 2:50 , Asfer Shah wrote:
>>>>> thanks for the quick Reply, Actually I am appearing in les than a
>>>>> week time
>>>>> and I am failing to understand this buG !!
>>>>> nothing much I could figure out !!!
>>>>> I am hell stuck,since either multcast or Internet will wok at a
>>>>> single time
>>>>> !!
>>>>>
>>>>> CE1 is dual homed to PE5 and PE3, we have three GRE (MDT) tunnels
>>>>> between PE2
>>>>> , PE 5 and PE3
>>>>> thanks
>>>>>
>>>>>
>>>>> |--------------------------
>>>>> PE5-----
>>>>> -----
>>>>> |
>>>>> |
>>>>>>> INT---------PE1--------PE2--------------------------PE3--------CE1
>>>>>>> | |
>>>>>>> | |
>>>>>>> PE4 CE2
>>>>>
>>>>>
>>>>>> From: markom_at_ipexpert.com
>>>>>> Date: Wed, 2 Feb 2011 10:16:40 +0100
>>>>>> Subject: Re: No SOLUTION till DATE for this SCNERIO ???? Challenging
>>>>> MULTICAST TASK ?? Please help
>>>>>> To: s_asfar_at_hotmail.com
>>>>>> CC: bmcgahan_at_ine.com; scott_ccie_list_at_it-ag.com;
> ccielab_at_groupstudy.com
>>>>>> ;
>>>>> narbikk_at_gmail.com
>>>>>> Can you please post all the relevant configurations to the list so
>>>>>> we
>>>>>> can actually troubleshoot it? :-)
>>>>>>
>>>>>> --
>>>>>> Marko Milivojevic - CCIE #18427
>>>>>> Senior Technical Instructor - IPexpert
>>>>>>
>>>>>> FREE CCIE training: http://bit.ly/vLecture
>>>>>>
>>>>>> Mailto: markom_at_ipexpert.com
>>>>>> Telephone: +1.810.326.1444
>>>>>> Web: http://www.ipexpert.com/
>>>>>>
>>>>>> On Wed, Feb 2, 2011 at 09:03, Asfer Shah <s_asfar_at_hotmail.com>
>>>>>> wrote:
>>>>>>> Hello ,
>>>>>>> I have a Query to which no one have answered so far ??
>>>>>>>
>>>>>>> PE2-PE3 are in AS20 and are MP-iBGP neighbor to each other.
>>>>>>> CE1 and CE2 are two sites connected to PE2 and PE3 respectively
>>>>>>> talking
>>>>>>> through the MPLS VPN cloud.
>>>>>>> The multicast distribution trees are also configured and the Intra-
>>>>>>> AS
>>>>>>> multicast end-to-end is working smoothly fine between CE1-CE2.
>>>>>>>
>>>>>>> I have the below topology in which I have a trouble.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> INT---------PE1--------PE2-------PE3--------CE1
>>>>>>> | |
>>>>>>> | |
>>>>>>> PE4 CE2
>>>>>>>
>>>>>>>
>>>>>>> Now,I have PE1 in AS 10 which is gateway to the internet and is
>>>>>>> peering
>>>>> with
>>>>>>> PE2 for ipv4 (add-fam) only.
>>>>>>> I have PE4 in (AS30) which is peering with PE1 for both ipv4 and
>>>>>>> vpnv4
>>>>>>> (add-families)
>>>>>>> PE4 is Multihop Mp-eBGP neighbor to both the PE2 and PE3.
>>>>>>>
>>>>>>> PE1 is advertising the internet (0.0.0.0 in vpnv4 add family) to
>>>>>>> PE4 and
>>>>> then
>>>>>>> PE4 is throwing it to PE2 and PE3
>>>>>>> After manipulating the Next-Hop , PE2 and PE3 do watch the internet
>>>>> default
>>>>>>> vpnv4 route 0.0.0.0 coming from PE1 and they do access the internet
>>>>> easily.
>>>>>>> At this point when I check back the multicast between CE1 and
>>>>>>> CE2 , it
>>>>> will
>>>>>>> stop working and the traffic is dropped
>>>>>>> The momnet , I remove the 0.0.0.0 route adver in the vpnv4 from
>>>>>>> PE1 , my
>>>>>>> multicast will run perfectly fine.
>>>>>>>
>>>>>>> There is PIM running between PE1 PE2 and PE4 but no solution to the
>>>>> problem
>>>>>>> till date !!
>>>>>>> Can you please help me in this special problem ???
>>>>>>>
>>>>>>>
>>>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>>>
>>>>>>>
>> _______________________________________________________________________
>>>>>>> Subscription information may be found at:
>>>>>>> http://www.groupstudy.com/list/CCIELab.html
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>> <CE1.cfg><CE2.cfg><PE1.cfg><PE2.cfg><PE3.cfg><PE4.cfg><PE5.cfg>
>>>>>
>>>>>
>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>
>>>>>
> _______________________________________________________________________
>>>>> Subscription information may be found at:
>>>>> http://www.groupstudy.com/list/CCIELab.html
>>>>
>>>> Blogs and organic groups at http://www.ccie.net
>>>>
>>>> _______________________________________________________________________
>>>> Subscription information may be found at:
>>>> http://www.groupstudy.com/list/CCIELab.html
>>>
>>> Blogs and organic groups at http://www.ccie.net
>>>
>>> _______________________________________________________________________
>>> Subscription information may be found at:
>>> http://www.groupstudy.com/list/CCIELab.html
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Sun Feb 06 2011 - 15:40:21 ART