I am getting some conflicting info when looking up how a cisco router chooses the best route to get a packet to its destination. I believe what I am reading says that when a router gets a packet from a source destined to 10.0.1.50 & see's multiple routes to destination 10.0.1.50 it will use the route with the lowest AD number first.
If 2 of the routes to the same destination have the same AD number the router will check which path has the best metric & choose that route first.
And last, if all AD numbers are the same & no metrics are defined, the router will choose the route with the most specific prefix first.
Does this make sense? I also heard the route with the lowest AD always gets picked first no matter what & if the AD numbers are the same the route with the most specific prefix gets picked second. Please Help!
