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

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
> > >>
> > >>
Received on Sun Feb 06 2011 - 09:46:19 ART