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MPLS without Redistributing

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Hi all SP guys

Can you tell me how it can be done to make an mpls network which has ospf between CE and PE,work without redistributing between ospf and bgp?

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doesn't work.. bgp is need to transport your VPN routes

 

How can a tunnel help here?Or how can we remove at least one of the two redistributions and use another solution?

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How can a tunnel help here?Or how can we remove at least one of the two redistributions and use another solution?

 

 

u should be able to remove both redistributions, Create Tunnel in vrf At both ends and form OSPF Adjecency over tunnel on MPLS Backbone.

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u should be able to remove both redistributions, Create Tunnel in vrf At both ends and form OSPF Adjecency over tunnel on MPLS Backbone.

 

creating tunnel in vrf .. how!

 

how it will be propagate throw the MP-BGP

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.

 

infact this a strange requirement, but can be achieved by creating tunnel in both side vrf's and using source and destinations to bgp peering addresses, GRE Trepasses all the VRF rules.. hehe he, Hope make sense.

 

thanks

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infact this a strange requirement, but can be achieved by creating tunnel in both side vrf's and using source and destinations to bgp peering addresses, GRE Trepasses all the VRF rules.. hehe he, Hope make sense.

 

thanks

 

 

thnx for the fast responce,,,, anyhow i will try it

 

and i will tell u if it make anysence or not

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infact this a strange requirement, but can be achieved by creating tunnel in both side vrf's and using source and destinations to bgp peering addresses, GRE Trepasses all the VRF rules.. hehe he, Hope make sense.

 

thanks

 

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Dear Gurru,

I m going to appear in CCIE SP written , I think the soultion provided by you will work but is it will be IP MPLS VPN or tunnel just serve as a bridge between two Customer sides i.e no adjacency with PE but directly with other end CE.

 

Hi brother I m new at the forum if question looks silly plz donot mind.

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Dear Gurru,

I m going to appear in CCIE SP written , I think the soultion provided by you will work but is it will be IP MPLS VPN or tunnel just serve as a bridge between two Customer sides i.e no adjacency with PE but directly with other end CE.

 

Hi brother I m new at the forum if question looks silly plz donot mind.

Hi Mate,

 

See, situation is, if you not do mutual redistribute on PE BGP and CE IGP, then there is no way to make vpn work.

 

so, if they are not allowing you to do redistribution, there is no way to make vpn work than GRE Tunnel.

 

You got my point?

 

now let see what will be happen with traffic:

 

Both PE routres will have adjecency via GRE in VRF of VPN.

 

Both sites will get ospf routes via GRE not via MPBGP.

 

Keep tunnel destination both PE BGP peering address.

 

in this case packets of both destinations will be label switched.

 

But this is definately not MPLS L3 VPN, this is GRE making work for VRF Lite.

 

Hope make sense.

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HI Gurru,

Thanks for the very good explanation. I was also expecting same thing.

 

Hi Mate,

 

See, situation is, if you not do mutual redistribute on PE BGP and CE IGP, then there is no way to make vpn work.

 

so, if they are not allowing you to do redistribution, there is no way to make vpn work than GRE Tunnel.

 

You got my point?

 

now let see what will be happen with traffic:

 

Both PE routres will have adjecency via GRE in VRF of VPN.

 

Both sites will get ospf routes via GRE not via MPBGP.

 

Keep tunnel destination both PE BGP peering address.

 

in this case packets of both destinations will be label switched.

 

But this is definately not MPLS L3 VPN, this is GRE making work for VRF Lite.

 

Hope make sense.

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