Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

OSPF splitted Area

Hi,

can anyone explain me the following scenario.

There are two ABRs connected to Area0 and Area 200. The Routers are connected with a L-3 point-to-point link (Area 200). The Loopback Interfaces are in Area 200, too. Each access switch has a redundant connection to each Router. OSPF traffic should only transfer over the p-2-p link, so the Interfaces to the access switches are OSPF passive interfaces.

If the point-to-point link fail, each router receives OSPF LSAs over Area 0, which say´s there are an other Router connected to the same area and networks, but there are no intra area connection to this router !!!

I had test it, and there was always a connection to the access switches, but anyone know what´s in detail the reaction of OSPF in this scenario and is there an other scenario who affected the network connections ???

THX for your help

  • Other Network Infrastructure Subjects
1 ACCEPTED SOLUTION

Accepted Solutions
New Member

Re: OSPF splitted Area

According to RFCs of OSPF, this routing protocol does not record area-id in the backbone router.

So, it works well under the topology like this: Area100---ASBR1---BackBoneRouter(Area0)---ASBR2---Area100.

hope this can be helpful

1 REPLY
New Member

Re: OSPF splitted Area

According to RFCs of OSPF, this routing protocol does not record area-id in the backbone router.

So, it works well under the topology like this: Area100---ASBR1---BackBoneRouter(Area0)---ASBR2---Area100.

hope this can be helpful

109
Views
0
Helpful
1
Replies
This widget could not be displayed.