Select routes using policy and reachability
04BGP’s decision process separates received routes, a selected local route, and exported routes.
Related RFCs and changes
“Updates” changes part of an earlier RFC. “Obsoletes” replaces it. This list shows selected related documents.
DIAGRAM§ 9.1 ↗
RFC 4271 · § 9.1EXAMPLE
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Install in Loc-RIB and apply export policy for Adj-RIBs-Out.
Install in Loc-RIB and apply export policy for Adj-RIBs-Out.
Protocol participantThreat or exceptionProtocol controlSimplified drawings · precise section references
Read the updated RFC section ↗
NEXT_HOP must be resolvable for a route to be usable.
- NEXT_HOP must be resolvable for a route to be usable.
- Degree of preference and tie breaking are not equivalent to globally choosing the geographically shortest route.
The drawing is a simplified worked example. Follow the linked RFC and its updates for implementation requirements.
Read the RFC section ↗Diagrams simplify the RFC. Read the linked sections for complete requirements.
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