CCIE SP - Inter-AS MPLS VPN Option B Lab - Initial + Full Configs

Inter-AS MPLS VPN Option B is a widely used method for enabling secure and scalable MPLS VPN connectivity between different Autonomous Systems (ASes). Unlike Option A, which requires VRF-to-VRF peering, Option B allows for the exchange of VPN labels via MP-eBGP between ASBRs, reducing operational complexity.

With this approach, service providers can establish direct BGP sessions between ASBRs to advertise labeled VPN routes while keeping the MPLS forwarding plane intact. This method offers better scalability, reduced configuration overhead, and improved routing efficiency compared to Option A.

However, since ASBRs must store and manage customer VPN routes, careful route filtering and policy controls are required to maintain security and optimal performance in multi-provider networks.

You might also be interested in these labs:

• CCIE SP - IS-IS - Initial + Full Configs
• CCIE SP - BGP Lab - Initial + Full Configs
• CCIE SP - Inter-AS MPLS VPN - All Inter-AS Options - Initial + Full Configs
• CCIE SP - Inter-AS MPLS VPN - Carrier Supporting Carrier Lab - Initial + Full Configs
• CCIE SP - Inter-AS MPLS VPN Option D Lab - Initial + Full Configs
• CCIE SP - Inter-AS MPLS VPN Option C Lab - Initial + Full Configs
• CCIE SP - Inter-AS MPLS VPN Option B Lab - Initial + Full Configs
• CCIE SP MPLS Lab 2 - Initial + Full Configs
• CCIE SP - Inter-AS MPLS VPN Option A Lab - Initial + Full Configs
• CCIE SP - H-VPLS - Initial + Full Configs
• CCIE SP - VXLAN - MPLS - EVPN - Initial + Full Configs

The default username and password for images used in this course is as follows, however you will hear new passwords during the course if the instructor changes the credentials: 

** For Cisco XRv you are asked for a username and password in the loading process. You can add any username and password other than admin, root, sysadmin and other reserved usernames. Go with something like Alex/cisco e.g.

Then when completely loaded, you can use cisco/cisco or admin/admin.

***For XRv9K Full image you are asked for a username and password in the loading process. You then login using the username and password that you set.