Juniper Route Selection Process (BGP)

I’ve had to look this up more than a few times, so I figured I’d throw it here for anyone else looking. Yes, I know it’s all over the Internet, but one more place doesn’t hurt does it?

And remember, the LOCAL PREFERENCE value is the only value where HIGHER is better.

  1. Route Preference (BEFORE BGP Path selection process begins)
  2. Local Preference Value
  3. As Path Length 
  4. Origin (IGP < EGP < Incomplete)
  5. MED
  6. Prefer strictly internal paths
  7. Prefer strictly external paths
  8. Lowest IGP metric
  9. Lowest peer IP address

If you don’t believe me, here’s a link to Juniper’s documentation

Leave a Reply

There aren't any comments at the moment, be the first to start the discussion!