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RFC 2328 / PROTOCOL MECHANISMS

Synchronize the link-state database

02

Database Description summaries reveal missing or older LSAs before full database synchronization.

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RFC 2328 · § 10.6 — Database exchangeEXAMPLE
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Synchronize the link-state databaseDatabase Description summaries reveal missing or older LSAs before full database synchronization.DB: LSA A, BDB: LSA A, CDatabase Description summariesRequest missing LSAsA, B, CA, B, CFULLExchange → Loading → Full: synchronize advertisements
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Reach Full when required database synchronization is complete.

Reach Full when required database synchronization is complete.

Protocol participantThreat or exceptionProtocol controlSimplified drawings · precise section references
KEY POINT

Neighbors pass through Exchange and Loading toward Full.

  • Neighbors pass through Exchange and Loading toward Full.
  • Link State Requests obtain needed advertisements rather than copying an arbitrary global routing table.
DETAILS

The drawing is a simplified worked example. Follow the linked RFC and its updates for implementation requirements.

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All chapters in this RFC
  1. Discover neighbors and form adjacencies
  2. Synchronize the link-state database
  3. Flood a newer link advertisement
  4. Compute a shortest-path tree
  5. Separate areas through the backbone
RFC 9700 / CHAPTERS

Chapters

For full details, tables, algorithms, and exceptions, read the original RFC.

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