Quick Notes - BGP Best Route Selection

[*] BGP Best Route Selection

Once a match is found then the selection process is over

1 - Exclude any route with inaccessible next hop

2 - Prefer highest weight (weight is locally significant)

3 - Prefer highest local preference (globally used in AS)

4 - Prefer routers that were originated by the router

5 - Prefer Shortest AS Path

6 - Prefer lowest origin (IGP, EGP, Incomplete)

7 - Prefer lowest MED (MultiExit Discriminator)

8 - Prefer external paths over internal paths (iBGP)

9 - iBGP path - prefer path through with closest IGP

10 - eBGP path - oldest path

11 - Prefer path with lowest BGP router-id

biOos