BGP and OSPF redistribution issue

Unanswered Question
Jul 12th, 2007

hi all

I am attaching the diagram.i am using BGP and OSPF in my 7613 router.In ospf i am using default-information originate.So becasue of thsi i am getting a default route in my 6513 switch.So my all lan traffic is forwading to 6513 and it is sending all the traffic to 7613.Now the issue is that if i want to go to my internet, i cannot access it.So suggest me the best solution for this.My internal network is 10.0.0.0.Please suggest me how to design the mutual redistribution at 7613.

thanks in advance

shivlu

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Edison Ortiz Thu, 07/12/2007 - 11:51

When the traffic gets to the 7613 Router (source 10.0.0.0 network) does it get NAT'd before exiting to the internet ?

I don't think you need a mutual redistribution here. 7613 Router knows how to get to the 10.0.0.0 network and the internet, so routing is taking care of - now we need to verify NAT.

shivlu jain Thu, 07/12/2007 - 12:12

alo one more point 7613 is not connected to my internet cloud.it is my mpls/vpn cloud.

shivlu

Edison Ortiz Thu, 07/12/2007 - 12:51

Ok, I see the problem. You have the 7613 Router which is servicing the MPLS at one end but you also have 2 routers providing the internet connection.

You need to configure the 7613 router not to generate a default route into the OSPF domain since this will conflict with the default route from the 2 internet routers.

You need to redistribute the networks you've learned from the BGP cloud (MPLS) into OSPF and viceversa.

under the BGP process, you can do the following:

redistribute ospf [process_id] metric 1

and under the OSPF process on the same router, you can type:

redistribute bgp [as_number] subnets

shivlu jain Sat, 07/14/2007 - 00:17

i donot want to redistribute my bgp in ospf.give me some other solution if u have.

shivlu

Edison Ortiz Sat, 07/14/2007 - 06:00

What's the default route on the 7613 ? If so, the 7613 can re-redirect packets to the desired internet devices while generating a default information originate into OSPF.

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