What is classless-inter domain routing (CIDR) or supernetting?
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meda Changed status to publish 16/07/2022
Supernetting, also called Classless Inter-Domain Routing (CIDR), is a way to aggregate multiple Internet addresses of the same class. It is mostly used to combine Class C network addresses and is the basis for most routing protocols currently in use. The main goal of supernetting is routing efficiency. It was created as a means of providing a solution to the exhaustion of Class B network address space. Moreover, it allows one routing table entry to represent an aggregation of networks.
Benefits of classless addressing and routing over the class-based addressing include:
- Efficient address space allocation
- Class imbalance elimination
- Efficient routing entries
- No requirement of separate subnetting method
- Eliminates the notion of IP address classes
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the_cyberguy Answered question 30/06/2022