Courses / AWS
99. BGP route priority and AS path manipulation
Techniques like local preference and AS path prepend to influence BGP routing decisions with AWS links.
AWS (cloud infrastructure)
BGP route priority and AS path manipulation
Methods for influencing which network path is chosen by BGP by changing local preference and AS path attributes at AWS links.
"I need traffic to leave my VPC over Link A, not Link B, without changing remote networks."
Local Preference sets a preferred eBGP/IBGP path inside an AS; AS-path prepend lengthens the apparent AS path to make a route less preferred by remote peers. Together they steer inbound and outbound traffic without changing addresses.
"I need traffic to leave my VPC over Link A, not Link B, without changing remote networks."
Local Preference sets a preferred eBGP/IBGP path inside an AS; AS-path prepend lengthens the apparent AS path to make a route less preferred by remote peers. Together they steer inbound and outbound traffic without changing addresses.