From: Richard Pickard (rpickard@ipexpert.com)
Date: Mon Mar 30 2009 - 09:28:15 ART
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
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Mon Apr 06 2009 - 06:44:08 ART