From: Pavel Bykov (slidersv@gmail.com)
Date: Mon Feb 16 2009 - 04:52:06 ARST
Nope, they rely on actual behaviour of the system.
DOC CD has errors, like any other documentation.
On Mon, Feb 16, 2009 at 6:49 AM, Eduardo Rossettini <
eduardo.rossettini@gmail.com> wrote:
> I assume Ruhann got this task from IEWB Vol 2 / Lab 3 which I was labbing
> up
> yesterday..
>
> Interestingly enough, my solution was "ip multicast ttl-threshold 12"
> according to what I have read on the DocCD.
>
> My question is: would the proctors rely on the DocCD when grading this type
> of task ?
>
>
> On Sun, Feb 15, 2009 at 3:58 AM, ALL From_NJ <all.from.nj@gmail.com>
> wrote:
>
> > Very cool! Many thanks for labbing this.
> >
> > Not that Cisco's commands always make sense to me ... but this makes
> sense
> > IMO. I would however prefer the docs to state "greater to or equal to"
> the
> > configured TTL threshold. Would be a bit more accurate.
> >
> > Oh well ... many thanks for labbing this. Rock on!
> >
> >
> >
> >
> > On Sat, Feb 14, 2009 at 3:05 AM, Hobbs <deadheadblues@gmail.com> wrote:
> >
> > > I have labbed this a few times. I made a post here just a couple days
> ago
> > > too:
> > >
> > > http://ccietobe.blogspot.com/2009/02/multicast-ttl-threshold.html
> > >
> > > Let me know what you think. I used high TTLs in my example but you
> > > should get the idea.
> > >
> > > Referring to Ruhann's task, according to the DocCD it would 12, but
> > > according to lab results it should be 13.
> > >
> > > On Fri, Feb 13, 2009 at 11:44 PM, ALL From_NJ <all.from.nj@gmail.com>
> > > wrote:
> > > > Can someone lab this up? I can tomorrow if no one else can. My
> > thoughts
> > > on
> > > > an easy test:
> > > >
> > > > Use dense mode
> > > > R1 has igmp static groups for a far side interface
> > > > R2 has ttl threshold command with links to R1 and R3
> > > > R3 sends mcast ping. On R3, configure the ttl of the ping to
> increase
> > > with
> > > > each test.
> > > > Test ping first before moving on.
> > > >
> > > > Set the ttl threshnold on R2's link to R1. Increase the configured
> > value
> > > > with each ping.
> > > >
> > > > The ttl threshold is looking at the outgoing packets ... what is the
> > ttl
> > > of
> > > > the outgoing packet? By the time the packet is an 'outgoing' packet,
> > the
> > > > ttl has already been reduced by one ... would be best to lab this
> > though
> > > to
> > > > see the command in action. I can tomorrow if no one else has this
> > > > available.
> > > >
> > > > Also, if my quick test above is 'lame' ... please specify a better
> test
> > > and
> > > > I can try whatever you think is good tomorrow.
> > > >
> > > > From the docs:
> > > >
> > > > Usage Guidelines:
> > > > Only multicast packets with a TTL value greater than the threshold
> are
> > > > forwarded out the interface.
> > > >
> > > > HTH,
> > > >
> > > > TGIF. Have a good night team,
> > > >
> > > > Andrew Lee Lissitz
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > On Sat, Feb 14, 2009 at 1:15 AM, BALA <balavignesh002@gmail.com>
> > wrote:
> > > >>
> > > >> I agree with Hobbs.
> > > >>
> > > >> The question is any thing lesser than 13 (13 should be permitted i
> > > guess)
> > > >> which mean from 12 to 1
> > > >>
> > > >> so the answer is 12.
> > > >>
> > > >> --
> > > >> Thanks & Regards
> > > >>
> > > >> Balavignesh R
> > > >>
> > > >>
> > > >
> > > >
> > > >
> > > > --
> > > > Andrew Lee Lissitz
> > > > all.from.nj@gmail.com
> > > >
> > >
> >
> >
> >
> > --
> > Andrew Lee Lissitz
> > all.from.nj@gmail.com
> >
> >
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> >
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-- Pavel Bykov ---------------- Don't forget to help stopping the braindumps, use of which reduces value of your certifications. Sign the petition at http://www.stopbraindumps.com/Blogs and organic groups at http://www.ccie.net
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