Explore The BGP Path Selection Attributes [Explained with Labs]

Explore The BGP Path Selection Attributes [Explained with Labs]

BGP Attributes Categories

There are four categories of BGP attributes (CiscoPress):

  • Well-known mandatory: Must be recognized by all BGP routers, present in all BGP updates, and passed on to other BGP routers. For example, AS path, origin, and next hop.
  • Well-known discretionary: Must be recognized by all BGP routers and passed on to other BGP routers but need not be present in an update, for example, local preference.
  • Optional transitive: Might or might not be recognized by a BGP router but is passed on to other BGP routers. If not recognized, it is marked as partial, for example, aggregator, or community.
  • Optional nontransitive: Might or might not be recognized by a BGP router and is not passed on to other routers, for example, Multi-Exit Discriminator (MED), originator ID.


BGP Attributes Explained with configuration examples [Labs]

Next Hop

– AS PATH

– ORIGIN

– Local Preference


Order of BGP Path Attributes

Bilel

0 0 votes
Article Rating
Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments
0
Would love your thoughts, please comment.x
()
x