Networking / Beginners

IP Address Management

The key to a successful hierarchical network structure is proper IP address management. If addresses are assigned appropriately, it is possible to summarize routing information. The two significant reasons to summarize routes follows:

  • Summarization localizes the effects of topology changes and thus contributes to network stability.
  • Summarization reduces the amount of routing information that is carried by all routers.

These reasons simplify network administration and troubleshooting, in addition to reducing the resources that are consumed by the routing protocol (CPU, memory, and so on).

TIP Each area used by OSPF or integrated IS-IS should have a contiguous set of network or subnet numbers assigned to it. The area border routers should summarize that set of addresses with an address mask. Summarization provides substantial benefits for your network.

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