Re: MPLS and OSPF Area 0 Hierarchy

Dear Syed,

I dont think so that two different areas will communicate through MPLS
SuperBackbone Area 0. This Superbackbone Area has different meaning
compared to DMVPN.

Following are the scenarios are possible from CE :

Area 0 to Area 0
Area 0 to Area 1
Area 1 to Area 1

Sham links usually used when we have backdoor links for the same area.

This MPLS SuperBackbone Area 0 used for "Internal OSPF Routes Across
MPLS VPN Backbone" with the help of BGP Extended Communities for OSPF.

Regards,
Anser

On Fri, Feb 5, 2010 at 6:53 PM, Syed Khalid Ali
<khalid_khursheed_at_hotmail.com> wrote:
> Group:
> I need clarification on how area 0 is maintained across MPLS networks between customer network. Some of the example I am going through right now are something like this:
> CE1(OSPF A1)--(PE1)--P1---P2--CE2(OSPF A2)
>
> OSPF (in area 0) is running on SP network (only). Now in a typical DMVPN environment, Area 0 is maintained across the WAN for each site of the customer.Area_1--site_1---Area_0---site_2--Area_2.
> How does it related to this Area 0 concepts?
>
> ThanksKhalid
>
>
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Received on Mon Feb 08 2010 - 16:50:36 ART