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Beginner

Layer 3 MPLS VPN Inter-AS peering

I am investigating available strategies/methods two different ISPs can employ to peer their Layer 3 mpls vpns in order to provider a customers an end-to-end connection between its two sites, where site 1 is connected to ISP 1 and site 2 is connected to ISP 2. With emphasis on how the class of service would be handled across both ISP's network for guaranteed service level

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Cisco Employee

Hi Ibrahim,THere are

Hi Ibrahim,

THere are different solutions available for Inter-AS MPLS VPN. When the ISPs belong to different administration, it is common to see the use of "Inter-AS Option B" to provide VPN service to a customer with sites connected to different providers.

 

Below is the sample configuration for IOS-XE (and IOS):

http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_l2_vpns/configuration/xe-3s/mp-l2-vpns-xe-3s-book/mp-inter-as-option-b.html

 

In any of those options, the class of service ideally depends on how the provider agrees to handle. 

 

-Nagendra

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