From: Alan Ewer (acewer64@gmail.com)
Date: Thu Dec 13 2007 - 03:03:56 ART
Hi Guys.
I agree that the communication is between a NON-DR/BDR router to the DR/BDR,
doesnt explainwhy a NON-DR/BDR router cannot have the neighbour command and
initiate the adjacency ??
Regds
Alan E
On 12/13/07, Joel Amao <femmy79@hotmail.com> wrote:
>
> You only communicate with the the DR/BDR on NBMA, so assuming you set
> priority to 0 then it can neither be a DR nor a BDR. So the neighbor
> command
> is taken out since we dont need a full neighbor relationship with a non
> DR/BDR.
>
>
>
>
> Thanks,
> Joel Amao
> CCIE#18128
> > Date: Thu, 13 Dec 2007 07:53:27 +1000> From: acewer64@gmail.com> To:
> shiranp3@gmail.com> Subject: Re: OSPF Neighbour config wont stick in
> config ?>
> CC: goglidze@gmail.com; ktokash@hotmail.com; ccielab@groupstudy.com> > Hi
> guys..> Yes I disagree that its not required.. A neighbour command must
> be>
> configured somewhere, why not on the spokes ? Maybe a hole in my>
> understanding of OSPF NBMA but it shouldnt matter where the neighbour>
> command
> is as long as someone statrs the adjacency negotiation... all is> good
> ....correct ??> > Regds> Alan E> Brisbane Australia> > On Dec 13, 2007
> 6:07
> AM, shiran guez <shiranp3@gmail.com> wrote:> > > nice :-)> >> >> >> >> >
> On
> Dec 12, 2007 10:03 PM, George Goglidze <goglidze@gmail.com> wrote:> >> > >
> Hi
> Shiran,> > >> > > That is what happens until you restart your router!!!
> :)))>
> > >> > > try restart it with priority 0, and you'll see that after it
> comes
> up,> > > even if you change your priority the neighbor statement is not
> there
> any> > > more...> > >> > > Regards,> > >> > >> > >> > > On Dec 12, 2007
> 8:45
> PM, shiran guez <shiranp3@gmail.com> wrote:> > >> > > > George> > > >> > >
> >
> try to set it up with the ip ospf prio 0 and the neigbor statement> > > >
> under the ospf process and then only remove the ip ospf prio 0, you will
> see>
> > > > that your neighbor statement is reappearing so it indicate that it
> is
> only> > > > hidden and not removed.> > > >> > > >> > > >> > > >> > > > On
> Dec
> 12, 2007 6:15 PM, George Goglidze <goglidze@gmail.com> wrote:> > > >> > >
> > >
> Hi there,> > > > >> > > > > It's not hidden, it's simply removed as it's
> not
> needed.> > > > >> > > > > when you have NBMA network and you set priority
> 0 on
> non-hub> > > > > routers.> > > > > the neighbor command is removed on next
> reload.> > > > >> > > > > I'm not sure, but I think this could be security
> against> > > > > misconfiguration,> > > > > so that you don't configure
> non-hub -to- non-hub neighbor.> > > > >> > > > > in NBMA mode you just
> configure neighbor on DR and BDR.> > > > >> > > > > that's the only
> neighborship you need anyway.> > > > >> > > > > Regards,> > > > >> > > > >
> On
> Dec 12, 2007 4:21 PM, shiran guez <shiranp3@gmail.com> wrote:> > > > >> >
> > >
> > > the command is hidden not gone, i do not think it is a bug but as> > >
> > >
> > I said> > > > > > before a issue of cosmetics.> > > > > >> > > > > > On
> Dec
> 12, 2007 4:40 PM, keith tokash < ktokash@hotmail.com >> > > > > > wrote:>
> > >
> > > >> > > > > > > Can you test if the command is hidden or simply gone?
> Easy
> way> > > > > > to do this> > > > > > > is to remove the neighbor command
> from
> the hub and see if the> > > > > > neighbors come> > > > > > > up.> > > > >
> >
> >> > > > > > > If there's a valid reason for this I want to know. If it's
> a> >
> > > > > bug, we may> > > > > > > hit it in the lab, and I also want to
> know.
> :)> > > > > > >> > > > > > > With a few exceptions, secrecy is deeply
> incompatible with> > > > > > democracy and> > > > > > > with science.> > >
> > >
> > > --Carl Sagan> > > > > > >> > > > > > > > Date: Wed, 12 Dec 2007
> 14:03:56
> +0200> > > > > > > > From: shiranp3@gmail.com> > > > > > > > To:
> acewer64@gmail.com> > > > > > > > Subject: Re: OSPF Neighbour config wont
> stick in config ?> > > > > > > > CC: ccielab@groupstudy.com> > > > > > >>
> > >
> > > > > >> > > > > > > > well I would say that logically it doesn't make
> sense
> to put> > > > > > there in> > > > > > > the> > > > > > > > first place so
> the
> developers probably made it to be hidden> > > > > > when you put> > > > >
> > >
> the> > > > > > > > interface into prio 0> > > > > > > >> > > > > > > > if
> you
> will remove the ip os prio 0 you will see again your> > > > > > neighbor>
> > >
> > > > > > statement so it was not remove simply hidden to hint you that> >
> > >
> > > it is not> > > > > > > > needed, so it is just cosmetics.> > > > > > >
> >>
> > > > > > > > On Dec 12, 2007 1:01 PM, Alan Ewer < acewer64@gmail.com>> >
> > >
> > > wrote:> > > > > > > >> > > > > > > > > Hi Shiren,> > > > > > > > > yes
> i
> understand that the neighbour command can be on either> > > > > >
> location> >
> > > > > > (> > > > > > > > > but doesnt need to be on both)..> > > > > > >
> >
> >> > > > > > > > > My Question is> > > > > > > > > Why does setting ip
> ospf
> pri 0 .. remove the neighbour> > > > > > command from> > > > > > > the> >
> > >
> > > > > > ospf process configuration ??> > > > > > > > >> > > > > > > > >>
> > >
> > > > > > > Regds> > > > > > > > > Alan E> > > > > > > > >> > > > > > > >
> > On
> Dec 12, 2007 8:53 PM, shiran guez < shiranp3@gmail.com>> > > > > > wrote:>
> > >
> > > > > > >> > > > > > > > > > you do not need a neighbor statement on the
> spoke of the> > > > > > hub. only> > > > > > > on> > > > > > > > > > the
> hub.>
> > > > > > > > > >> > > > > > > > > > if you set ip ospf prio 0 this router
> will never become a> > > > > > DR or BDR> > > > > > > so> > > > > > > > >
> > no
> need to indicate where to unicast> > > > > > > > > >> > > > > > > > > > On
> Dec
> 12, 2007 12:38 PM, Alan Ewer < acewer64@gmail.com >> > > > > > wrote:> > >
> > >
> > > > > >> > > > > > > > > > > Hi All> > > > > > > > > > > I have been
> pondering this little brain teaser ??> > > > > > > > > > >> > > > > > > >
> > >
> > If I have a router configured with the following> > > > > > > > > > >> >
> > >
> > > > > > > > router ospf 1> > > > > > > > > > > router id 1.1.1.1> > > >
> > >
> > > > > > network 1.1.1.0 0.0.0.255 AREA 0> > > > > > > > > > > neighbour
> 1.1.1.2> > > > > > > > > > >> > > > > > > > > > > ok so far right !!> > >
> > >
> > > > > > >> > > > > > > > > > > Int ser 0/0> > > > > > > > > > > ip
> address
> 1.1.1.1 255.255.255.0> > > > > > > > > > > frame map bla bla bla> > > > >
> > >
> > > > > ip ospf prio 0> > > > > > > > > > >> > > > > > > > > > >> > > > >
> > >
> > > > > and bingo the neighbour command disappears from the OSPF> > > > >
> >
> router> > > > > > > config> > > > > > > > > > > ...> > > > > > > > > > >
> Anyone know why ???> > > > > > > > > > >> > > > > > > > > > > Regds> > > >
> > >
> > > > > > Alan E> > > > > > > > > > > Brisbane, Aust> > > > > > > > > > >>
> > >
> > > > > > > > >> > > > > > >> > > > > >
> _______________________________________________________________________> >
> > >
> > > > > > > >> > > > > > > > > > > Subscription information may be found
> at:>
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> > >
> > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > >
> > >
> > > --> > > > > > > > > > Shiran Guez> > > > > > > > > > MCSE CCNP NCE1> >
> > >
> > > > > > > http://cciep3.blogspot.com> > > > > > > > > >
> http://www.linkedin.com/in/cciep3> > > > > > > > >> > > > > > > > >> > > >
> > >
> > > >> > > > > > > >> > > > > > > >> > > > > > > > --> > > > > > > >
> Shiran
> Guez> > > > > > > > MCSE CCNP NCE1> > > > > > > >
> http://cciep3.blogspot.com>
> > > > > > > > http://www.linkedin.com/in/cciep3> > > > > > > >> > > > > >
> > >>
> > > > > >
> _______________________________________________________________________> >
> > >
> > > > > Subscription information may be found at:> > > > > > > >
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> ------------------------------> > > > > > > i'm is proud to present Cause
> Effect, a series about real people> > > > > > making a> > > > > > >
> difference. Learn more<> > > > > >
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> >> >
> > > > >> > > > > >> > > > > >> > > > > > --> > > > > > Shiran Guez> > > >
> > >
> MCSE CCNP NCE1> > > > > > http://cciep3.blogspot.com> > > > > >
> http://www.linkedin.com/in/cciep3> > > > > >> > > > > >> > > > > >
> _______________________________________________________________________> >
> > >
> > > Subscription information may be found at:> > > > > >
> http://www.groupstudy.com/list/CCIELab.html> > > > > >> > > > >> > > > >>
> > >
> >> > > >> > > > --> > > >> > > > Shiran Guez> > > > MCSE CCNP NCE1> > > >
> http://cciep3.blogspot.com> > > > http://www.linkedin.com/in/cciep3> > >
> >> >
> >> > >> >> >> > --> >> > Shiran Guez> > MCSE CCNP NCE1> >
> http://cciep3.blogspot.com> > http://www.linkedin.com/in/cciep3> >
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