OSPF (Open Shortest Path First) is a foundational IGP (Interior Gateway Protocol) in Service Provider (SP) networks, offering fast convergence, hierarchical design, and efficient route distribution. Unlike simpler distance-vector protocols, OSPF’s link-state mechanism ensures each router has a complete network topology, leading to optimal path selection. In SP environments, multi-area OSPF design is crucial for scalability, reducing routing overhead and improving stability.
Additionally, OSPF supports MPLS integration, providing IP reachability for label distribution protocols like LDP and RSVP-TE.
With advanced features like LSA filtering, route summarization, and fast SPF calculations, OSPF remains a key component of high-performance carrier-grade networks.
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 |
