ospf route update

[shahid_duet]

Dear boss

I m using ospf between HO and Branches for two links. branch router are 2811 and HO router 3845. when i enable ospf at branch i get all branch route like HO router and a default route. My requirment is each branch get only HO but no other branch. I have no default route.

I attached show ip route status for a  branch router.. Pls tell me why default route comes and why all branch's route come ?

Thanking You

shahid

[Branimir Turk]

If every branch is different OSPF area you can use LSA filtering on HQ to filter which routes are sent to particular OSPF area.

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t4/feature/guide/ftabrt3f.html

Also you can use distributed lists at branch to filter whic OSPF routes are installed into routing table. But this is only local.

http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a0080094704.shtml#q12

For default routes, i suppose that you are using some kind of stubby area. How OSPF generates default routes you can find on link bellow.

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094a74.shtml

Hope it helps,

Branimir