From: Divin Mathew John (divinjohn@gmail.com)
Date: Mon Mar 30 2009 - 09:48:02 ART
Yes.! After changing it to Point to Point Network type. the subnets reflect
properly.! u have /16 network...OSPF shows it as /16... and so on.! only for
loopback interafce default config it uses a /32.!
Thanking You
Yours Sincerely
Divin Mathew John
divinjohn@gmail.com
divin@dide3d.com
+91 9945430983
+91 9846697191
+974 5008916
PGP PUBLIC KEY BLOCK @ http://www.dide3d.com/divin_Public_PGP_key.txt
On Mon, Mar 30, 2009 at 5:58 PM, Richard Pickard <rpickard@ipexpert.com>wrote:
> If you do not mind a suggestion --
>
> keep the ip ospf netw point-to-point on the loopback interface but try 3
> different masks [clear the ospf process after each change] /32 /30 /24 &
> notice the defference in the routing table.
>
>
>
>
> Richard L. Pickard CCIE R/S, Sec MCSE CCSE NCA
> Sr. Technical Instructor - IPexpert, Inc.
> Telephone: +1.810.326.1444
> Fax: +1.810.454.0130
> Mailto: rpickard@ipexpert.com
>
>
> On Sun, Mar 29, 2009 at 4:46 PM, Raghav Bhargava <
> raghavbhargava12@gmail.com
> > wrote:
>
> > Hi Experts,
> >
> > For example we have a loopback interface 0 with the Ip address
> 4.4.4.4/24
> >
> > Now when we have to advertise the network in the routing table, which of
> > the
> > following way is correct:-
> >
> > router ospf 1
> > network 4.4.4.4 0.0.0.0 area 4
> >
> > OR
> >
> > router ospf 1
> > network 4.4.4.0 0.0.0.255 area 4
> >
> > coz if we use any of the way we will see this entry in the routing
> table:-
> >
> > *4.0.0.0/32* is subnetted, 1 subnets
> > O 4.4.4.4 [110/2] via 1.1.1.1, 00:00:44, FastEthernet0/0
> >
> > Now another question that I have is if i change the network type of the
> > loopback from LOOPBACK ( which is default ) to point-to-point then the
> > routing table entry changes like this
> >
> > *4.0.0.0/24 *is subnetted, 1 subnets
> > O 4.4.4.4 [110/2] via 1.1.1.1, 00:00:44, FastEthernet0/0
> >
> > Please can some one explain this change in the subnet mask????
> >
> > As far as i know PPP converts the /24 or any other subnet into /32 host
> > routes. Maybe i could be wrong here......:)
> >
> >
> > --
> > Warm Regards
> > Raghav
> >
> >
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