From: Ajaz Nawaz (anawaz@xxxxxxxxx)
Date: Sat Oct 13 2001 - 16:34:50 GMT-3
>If you use 0.0.0.0, your neighbor statements will not appear and you
>will never be able to make a neighbor (this is on the hub router of a point
>to multipoint interface).
If you use the router ospf command 'net 11.11.11.11 0.0.0.0 area 0' this
associates the router ospf process to 11.11.11.11. In other words you have
just enabled OSPF on that interface with the IP address of 11.11.11.11.
I have used this configuration (no ip ospf network commands) and
neighborships DO appear - are we talking about the same issue here ? Please
can you shed some more light on your explanation i.e. 'If you use 0.0.0.0,
your neighbor statements will not appear and you will never be able to make
a neighbor ' ?
regs
jaz
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
John Elias
Sent: 13 October 2001 15:28
To: elouie@yahoo.com; xpranax@hotmail.com; bosoro@hotmail.com
Cc: ccielab@groupstudy.com
Subject: Re: why not to use 0.0.0.0 in OSPF
What I have noticed, if you are using frame relay and you are NOT using
the 'ip ospf network' statement, you need to specify the exact wildcard
mask. If you use 0.0.0.0, your neighbor statements will not appear and you
will never be able to make a neighbor (this is on the hub router of a point
to multipoint interface).
John E.
CCIE #8150
>From: "routerjocky" <elouie@yahoo.com>
>Reply-To: "routerjocky" <elouie@yahoo.com>
>To: "Brian Lodwick" <xpranax@hotmail.com>, <bosoro@hotmail.com>
>CC: <ccielab@groupstudy.com>
>Subject: Re: why not to use 0.0.0.0 in OSPF
>Date: Fri, 12 Oct 2001 19:00:55 -0700
>
>Am I just dense, or can someone else explain how specifying the host
>address
>and host wildcard mask in the ospf network stmt have anything to do with
>the
>OSPF forwarding address?
>
>default route is 0.0.0.0 as the network address, rarely if ever used in an
>ospf net statement as the network (unless the entire router is an internal
>router, and one doesn't care what networks are installed on it, it'll still
>be in the same area
>
>0.0.0.0 is also a host wildcard mask (as in net 171.68.1.1 0.0.0.0 area 0)
>
>hellllppppp me... I've fallen and I can't get up
>-e-
>
>----- Original Message -----
>From: "Brian Lodwick" <xpranax@hotmail.com>
>To: <bosoro@hotmail.com>
>Cc: <ccielab@groupstudy.com>
>Sent: Friday, October 12, 2001 5:00 PM
>Subject: why not to use 0.0.0.0 in OSPF
>
>
> > I have finally found one reason for not using the individual host
>(0.0.0.0)
> > for the network command.
> > I've gotta go home, but check out this issue with the "OSPF Forwarding
> > Address" if you use the 0.0.0.0 network command on the ASBR external
> > interface.
> > http://www.cisco.com/warp/customer/104/10.html
> >
> > >>>Brian
> >
> > >From: "Bryan Osoro" <bosoro@hotmail.com>
> > >Reply-To: "Bryan Osoro" <bosoro@hotmail.com>
> > >To: "'Ben-Shalom, Omer'" <omer.ben-shalom@intel.com>,
> > ><ccielab@groupstudy.com>
> > >Subject: RE: OSPF interface - a non related question
> > >Date: Fri, 12 Oct 2001 17:25:49 -0600
> > >
> > >My personal habit is to use the individual host, so I can assure that
>no
> > >other interfaces are grabbed and put into the process. I have yet to
> > >see actual advantages for any either way that are backed with
> > >documentation.
> > >
> > >Bryan
> > >
> > >
> > >-----Original Message-----
> > >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > >Ben-Shalom, Omer
> > >Sent: Friday, October 12, 2001 3:52 PM
> > >To: ccielab@groupstudy.com
> > >Subject: OSPF interface - a non related question
> > >
> > >regarding the below:
> > >
> > > >>network 10.10.10.1 0.0.0.0 area 1, network 10.10.10.1 0.0.0.63 area
>1,
> > >or
> > > >>network 10.0.0.0 0.255.255.255 area 1
> > > >>
> > > >>
> > > >>
> > > >>That should fix you right up
> > > >>
> > > >>
> > >
> > >I am pretty certain all of the above will, indeed work fine as the idea
> > >is
> > >to get the interface considered in the OSPF domain.
> > >
> > >Is one of the forms (the interface address specifically, the subnet it
> > >belongs to or a supernet/classful net) considered a better form/just
> > >better
> > >for any reason or is using any of them just as good.
> > >
> > >Personally I find using the subnet the most intuitive as it is a
> > >'network'
> > >statement so using a host there seems awkward and the classful one can
> > >match
> > >interfaces I don't want included in the same area, but I see not real
> > >reason
> > >why this would be better.
> > >
> > >Omer.
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