What is the role of route preference?
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A. B. C. D.A
Route preference refers to the process of assigning priorities to different routes in a routing table. When multiple routes to the same destination exist in a routing table, the route preference value is used to determine the best path for forwarding traffic.
Route preference is used for the following purposes:
A. Tiebreaking: When multiple routes to the same destination are available through different routing protocols, the route preference value is used as a tiebreaker to select the best path. In this case, the route with the lowest preference value is preferred over the route with a higher preference value.
B. Determining the preferred path: Route preference is used to determine the preferred path to a given destination. The preferred path is selected based on the route preference value and the routing metrics associated with the path, such as the cost, bandwidth, delay, and reliability of the link.
C. Selecting the best route: Route preference is also used to select the best route among multiple equal-cost paths to a given destination. In this case, the route with the lowest preference value is preferred over the other equal-cost paths.
D. Selecting the routing table: In some cases, the route preference value is used to select which routing table to use for forwarding traffic. This is particularly relevant in multi-table routing scenarios where different routing tables are used for different types of traffic or based on other criteria, such as the source or destination address of the traffic.
In summary, route preference is an important factor in determining the best path for forwarding traffic. It is used to select the best route among multiple paths based on routing metrics and other criteria, such as the source and destination addresses of the traffic.