I am trying to understand BGP BEST PATH SELECTION criteria 3 & 5
Selection 3: Prefer the path that was locally generated using Network / redistribute / aggregate command
Selection 5: Prefer the path with Lowest origin type IGP < EGP < INCOMPLETE
In selection 3 REDISTRIBUTE also make the route with SYMBOL (?), selection 5 also states INCOMPLETE (?)
I find difficult to understand the concept. can you please explain with example so that i can understand this better
Thanks in advance
You should understand this the following way:
Step 3 in the BGP path selection process is executed if there are multiple paths with the same weight and local preference attributes (step 1 and step 2)
Step 5 in the BGP path selection process is executed if there are multiple paths with the same weight, local preference and AS_Path attributes and the paths are not originated by the local router (step 1 through step 4).
So the point is to go over the path selection process step by step until a tie breaker can be found.