When you are designing or expanding your network, it is important to know how to manage IP address allocation properly, because this is crucial to the performance and expandability of your network. Here, we cover how to properly allocate IP addresses for a new network — and what to do if your network runs out of IP addresses. Learn that and more in this exciting article from David Davis, CCIE.
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Supernetting was created as a way to solve the problem of routing tables growing beyond our current ability to manage the exhaustion of Class B network address space. Much like one area code represents an aggregation of telephone numbers in an area, supernetting allows one routing table entry to represent an aggregation of networks. If you need to enter a static route to several subnetted networks, you can use network summarization to reference them all in one route. Just the same, you need to understand how to read routes received from other providers. You must also know how to create an access list that references these multiple networks in a single summarized statement. In this tip, you’ll learn more about the IP addressing-related topics of network summarization, supernetting and wildcard masks.
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