Classless Inter-Domain Routing (continued)

• Pronounced “cider.”

• Explained in RFC 1517 - 1520.

• Uses a generalization of the VLSM.

• Move from traditional Class to a prefix.

• Allows for route aggregation in the Internet routing tables.

  • Reduces the size and therefore increases the speed

• Works on the notion that we are routing arbitrarily sized network address space.

• One entry in a routing table could possibly match millions of addresses.

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