Building the BGP Table - Injecting Routes/Prefixes into the BGP table - Manual Summaries and the AS_PATH Path attribute
9 important questions on Building the BGP Table - Injecting Routes/Prefixes into the BGP table - Manual Summaries and the AS_PATH Path attribute
What are the four different components of the AS_PATH PA?
AS_SET
AS_CONFED_SEQ (short for AS Confederation Sequence)
AS_CONFED_SET
What does the AS_PATH AS_SET segment solve when the summary route has a null AS_SEQ (aggregate-address)? What is the IOS command?
aggregate-address x.x.x.x 255.0.0.0 summary-only AS-SET
When there's a aggregate address created. Does BGP create a summary when there are no NLRI routes in the BGP table inside the summary?
It does not create summary route when BGP table does not have any routes for NLRI inside the summary
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When there's a aggregate address created. How is the NEXT_HOP address listed in the LOCAL BGP table?
When there's a aggregate address created. How is the NEXT_HOP address advertised to neighbors?
When there's a aggregate address created and If the component subnets inside the summary differs. How is the summary route's AS_SEQ to be set?
When there's a aggregate address created. What does the router create when the AS-SET command is set?
When there's a aggregate address created. What does the AS_SET include?
When there's a aggregate address created and the summary-only key word is used. What is the behaviour of this command?
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