Explains handling errors in BGP update messages to maintain routing stability and integrity.
BGP update message error management is a feature that
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handles error update messages to avoid session reset
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classifies BGP update errors into categories based on factors such as severity, likelihood of update errors, or attribute type, and
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handles errors in each category according to the Internet Engineering Task Force (IETF) Inter-Domain Routing (IDR) draft, I-D:draft-ietf-idr-error-handling.
The base BGP specification requires a BGP speaker that receives an update message containing a malformed attribute to reset the session. This action affects both the routes with the malformed attribute and other valid routes exchanged over the session, which is undesirable.
The update message error handling implementation classifies BGP update errors into categories based on factors such as severity, likelihood of update errors, or attribute type.
Errors in each category are handled according to the draft.
The system avoids session reset as much as possible during error handling.
Error handling for some categories is controlled by configuration commands that enable or disable the default behavior.