From: routerjocky (elouie@xxxxxxxxx)
Date: Fri Oct 12 2001 - 23:00:55 GMT-3
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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