RE: OSPF on NBMA Networks

From: Robert Wagner (rwagner@logosinc.com)
Date: Fri Mar 07 2003 - 15:52:31 GMT-3


When configuring Frame-relay on a Multipoint subinterface, you must use neighbor statements, or use the "ip OSPF network type" command on the interface. You should use a priority of 1 to set the DR router. This should be the router with a PVC to all of it's neighbors. I hope this helps.

Robert Wagner

-----Original Message-----
From: Tony Schaffran [mailto:tschaffran@cconlinelabs.com]
Sent: Friday, March 07, 2003 11:47 AM
To: c ,; scotsman@rediffmail.com; ccielab@groupstudy.com
Subject: Re: OSPF on NBMA Networks

I seem to recall, that did not work on the Frame Relay network without the
"non-broadcast". I could be wrong. What is the default?

Tony Schaffran
Network Analyst
CCIE #11071
CCNP, CCNA, CCDA,
NNCSS, NNCDS, CNE, MCSE

www.cconlinelabs.com
"Your #1 choice for Cisco rack rentals."

----- Original Message -----
From: "c ," <ccie1@hotmail.com>
To: <tschaffran@cconlinelabs.com>; <scotsman@rediffmail.com>;
<ccielab@groupstudy.com>
Sent: Friday, March 07, 2003 8:36 AM
Subject: Re: OSPF on NBMA Networks

>
>
> What about ip ospf network point-multipoint?
>
> The quwstion didnt say you couldnt use those.
>
>
>
>
>
> >From: "Tony Schaffran" <tschaffran@cconlinelabs.com>
> >Reply-To: "Tony Schaffran" <tschaffran@cconlinelabs.com>
> >To: "Scot Peter" <scotsman@rediffmail.com>, <ccielab@groupstudy.com>
> >Subject: Re: OSPF on NBMA Networks
> >Date: Thu, 6 Mar 2003 11:15:47 -0800
> >
> >This is a perfect example of not reading too deep into it. Keep it
simple.
> >If the scenario tells you "Don't configure Network type Broadcast or
> >non-broadcast" and you can use neighbor statements, why not just use
> >neighbor statements?
> >
> >Remember, you don't get extra points for creativity.
> >
> >
> >
> >Tony Schaffran
> >Network Analyst
> >CCIE #11071
> >CCNP, CCNA, CCDA,
> >NNCSS, NNCDS, CNE, MCSE
> >
> >www.cconlinelabs.com
> >"Your #1 choice for Cisco rack rentals."
> >
> >
> >----- Original Message -----
> >From: "Tony Schaffran" <tschaffran@cconlinelabs.com>
> >To: "Scot Peter" <scotsman@rediffmail.com>; <ccielab@groupstudy.com>
> >Sent: Thursday, March 06, 2003 10:36 AM
> >Subject: Re: OSPF on NBMA Networks
> >
> >
> > > It sounds like you just need the neighbor statements.
> > >
> > >
> > >
> > > Tony Schaffran
> > > Network Analyst
> > > CCIE #11071
> > > CCNP, CCNA, CCDA,
> > > NNCSS, NNCDS, CNE, MCSE
> > >
> > > www.cconlinelabs.com
> > > "Your #1 choice for Cisco rack rentals."
> > >
> > >
> > > ----- Original Message -----
> > > From: "Scot Peter" <scotsman@rediffmail.com>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Thursday, March 06, 2003 4:54 AM
> > > Subject: OSPF on NBMA Networks
> > >
> > >
> > > > Hello Group
> > > >
> > > > If we need to configure OSPF on a Multipoint interface with the
> > > > following condition,
> > > > - R1 should use Multipoint interfaces,
> > > > - R2, R3 should not use subinterfaces,
> > > > - All three routers should be in the same Network.
> > > > - Don't configure Network type Broadcast or non-broadcast.
> > > >
> > > > R1
> > > > / \
> > > > R2 R3
> > > >
> > > > I am not sure about configuring "ip ospf network
> > > > point-to-multipoint" (As the question mentions not to configure
> > > > Non-broadcast) or do we need to configure using "neighbor"
> > > > command? Please advice me on this.
> > > >
> > > > Regards
> > > > Pet
>
>
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