IS-IS Versus OSPF—A Closer Look

Table 7-2 provides concise point-by-point highlights of the differences between Integrated IS-IS and OSPF. The following section discusses in detail these differences and their relative merits between the two protocols. Where necessary, achitectural details are provided to elaborate the discussions. The discussions are organized in the following topics:

  • Encapsulation

  • Packet Formats and Encoding Issues

  • Neighbor Discovery and Adjacency Maintenance

  • Distribution of Routing Information

  • Route Characteristics and Metric Information

  • Robustness and Reliability Issues

  • Network Architecture

  • Stabilility, Convergence, and Scalability

  • Security

  • Operations: Maintenance and Troubleshooting

  • Conclusions: Which Protocol Is Better?

Encapsulation ...

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