Jan
08

One of the most important technical protocols on the planet is Open Shortest Path First (OSPF). This highly tunable and very scalable Interior Gateway Protocol (IGP) was designed as the replacement technology for the very problematic Routing Information Protocol (RIP). As such, it has become the IGP chosen by many corporate enterprises.

OSPF’s design, operation, implementation and maintenance can be extremely complex. The 3-Day INE bootcamp dedicated to this protocol will be the most in-depth coverage in the history of INE videos.

This course will be developed by Brian McGahan, and Petr Lapukhov. It will be delivered online in a Self-Paced format. The course will be available for purchase soon for $295.

Here is a preliminary outline:

Day 1 OSPF Operations

●      Dijkstra Algorithm

●      Neighbors and Adjacencies

○   OSPF Packet Formats

○   OSPF Authentication

○   Link-State information Flooding

●      Concept of Areas

○   Notion of ABR

○   Notion of ASBR

●      Network Types

○   Flooding on P2P Links

○   Flooding with DR

○   Topologic Representation

●      The Link State Database

○   LSA Format (Checksum, Seq#, etc)

○   LSA Types

○   LSA Purging

●      The Routing Table

○   How is RIB computed from LSDB

●      Flooding Reduction

○   DNA bit

○   DC Circuits

○   Database Filter

Day 2 Configuring OSPF

●      Basic Configurations

○   Setting Router IDs

○   OSPF and Secondary Addresses

●      NBMA Networks

○   Selecting Network Type

○   Ensuring peer reachability

●      Special Areas

○   Stub Area Types

○   Routing in NSSA Areas

●      OSPF Summarization

○   Internal vs External

●      Virtual Links

○   Transit Capability

○   Summarization and Virtual Links

Day 3 Advanced Topics and Troubleshooting

●      OSPF Fast Convergence

○   L3 and L2 interaction

○   SPF and LSA Throttling

●      OSPF Tuning

○   LSA Pacing

○   Hello Timer Tuning

○   Max-Metric LSA

●      OSPF in MPLS Layer 3 VPNs

○   Superbackbone

○   MP-BGP extensions for OSPF

○   Loop-Prevention Concepts

○   Sham-Link

●      Inter-Area Loop Prevention Caveats

●      Key OSPF Verifications

●      OSPF Troubleshooting Process

○   Adjacency Problems (e.g. MTU issues)

○   Intra-area reachability (e.g. network types mismatch)

○   Inter-area reachability (e.g. summary LSA blocking)

○   Troubleshooting VLs and SLs

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