Advertise and withdraw prefixes
02UPDATE messages carry withdrawals, path attributes, and reachable prefixes.
Related RFCs and changes
“Updates” changes part of an earlier RFC. “Obsoletes” replaces it. This list shows selected related documents.
DIAGRAM§ 4.3 ↗
RFC 4271 · § 4.3EXAMPLE
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03
Withdraw the prefix when that reachability is removed.
Withdraw the prefix when that reachability is removed.
Protocol participantThreat or exceptionProtocol controlSimplified drawings · precise section references
Read the updated RFC section ↗
NLRI describes prefixes, not a flat list of individual hosts.
- NLRI describes prefixes, not a flat list of individual hosts.
- Withdrawal removes advertised reachability; it is not a route advertisement with an arbitrary very large metric.
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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