Inter-AS MPLS VPN enables secure and scalable VPN connectivity between different Autonomous Systems (ASes), allowing service providers to extend MPLS-based VPNs beyond a single AS. It supports multiple deployment models—Option A (back-to-back VRFs), Option B (MP-eBGP label exchange), Option C (end-to-end label switching with BGP Labeled Unicast), and Option D (enhanced Option C with SR or RSVP-TE)—each offering trade-offs in complexity, scalability, and operational overhead.
These solutions help large-scale ISPs and enterprises achieve seamless, multi-AS connectivity while maintaining traffic separation and QoS policies.
Mastering Inter-AS MPLS VPNs is essential for network engineers working on global-scale MPLS architectures and cross-provider VPN services.
You might also be interested in these labs:
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:
Image name | Username | Password |
IOL images | No username | No password |
CSR1000v | Admin | Admin |
C8000v | Admin | admin |
Viptela devices | Admin | admin |
Windows Server | Administrator | Test123 |
IOS-XR | Admin | Enter new password |
Cisco ASA 802 | no username | no passwd, hit enter |
Cisco ASA 8.4.2, 9.1.5 | no username | no passwd, hit enter |
Cisco ASAv | no username | no passwd, hit enter |
Cisco IPS | cisco | ciscoips123 |
Cisco WSA | admin | ironport |
Cisco ESA | admin | ironport |
Cisco WAAS | admin | default |
Cisco XR9K | Cisco | Cisco |
Cisco NX9K | admin | admin |
