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

Inter-AS MPLS VPN Option A is the simplest approach for establishing MPLS VPN connectivity between different Autonomous Systems (ASes). It involves direct VRF-to-VRF peering between ASBRs, where customer routes are exchanged as traditional IPv4/IPv6 prefixes using eBGP. Since there is no MPLS label exchange between ASes, each AS maintains full control over its routing policies and security, making Option A a highly secure but less scalable solution.

While this method is easy to implement and troubleshoot, it requires separate VRF configurations on both ASBRs, leading to higher operational overhead as the network grows. Due to these limitations,

Option A is best suited for small-scale Inter-AS MPLS deployments where security and control are prioritized over scalability and automation.

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.