BGP Route decision-making process

1. If the next hop cannot be reached, do not consider
2. Select a route with the maximum weight.
3. If the route has the same weight, use the route with the highest local priority.
4. If you have the same local priority, the BGP Route from the vrobgp is preferred.
5. If there is no BGP Route from the vrobgp, select the route with the shortest AS length.
6. If all the routes have the same AS length, select the routes with the lowest orign code.
7. If the orign code is the same, select the route with the smallest MED value.
8. If MED is the same, the external route is preferred instead of the internal route.
9. If it is still the same, select the route through the nearest IGP neighbor.
10. If it is still the same, select the route with the smallest vroid ID