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BGP route selection with MEDs
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Manage episode 151067186 series 1014225
Content provided by Darrell Root. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Darrell Root or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://staging.podcastplayer.com/legal.
In BGP, MED stands for Multi Exit Discriminator. It is a well-known optional attribute which allows one autonomous system to inject it's IGP route metrics into its BGP advertisements to another BGP autonomous system. This allows the second autonomous system to make intelligent routing decisions regarding which of multiple paths to take to send traffic to a particular destination in the first autonomous system.
…
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Because different AS's use different IGP's and can calculate metrics in different ways, by default MEDs are only compared when multiple paths exist between the same two autonomous systems.
BGP MEDs are fairly late in the BGP route selection process, coming after local-preference and AS-PATH length.
In this episode we show how to inject MEDs into BGP advertisements, and how they are used to influence routing decisions.
41 episodes
MP4•Episode home
Manage episode 151067186 series 1014225
Content provided by Darrell Root. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Darrell Root or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://staging.podcastplayer.com/legal.
In BGP, MED stands for Multi Exit Discriminator. It is a well-known optional attribute which allows one autonomous system to inject it's IGP route metrics into its BGP advertisements to another BGP autonomous system. This allows the second autonomous system to make intelligent routing decisions regarding which of multiple paths to take to send traffic to a particular destination in the first autonomous system.
…
continue reading
Because different AS's use different IGP's and can calculate metrics in different ways, by default MEDs are only compared when multiple paths exist between the same two autonomous systems.
BGP MEDs are fairly late in the BGP route selection process, coming after local-preference and AS-PATH length.
In this episode we show how to inject MEDs into BGP advertisements, and how they are used to influence routing decisions.
41 episodes
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