Your network started small. Then it grows bigger and bigger. Each department (i.e. Accounting, Sales, etc.) requires more and more IP addresses. You think your company will use up all available IP address pretty soon. What to do?
FYI, your company may not run out IP address just yet. There might be something improper with the company's current network design. The following thread might give you a fresh insight.
»running out of IP addresses
Basically the sample company incorporate "flat network". I refer "flat network" as using the very same /24 subnet for all departments. As illustration, your company uses 10.10.10.0/24 subnet for all departments; where 10.10.10.2 can be in Sales, 10.10.10.5 can be in Accounting, 10.10.10.9 can be in IT, and so on.
As the thread shows, such usage of "flat network" is not suggested. When your company grows as the sample company, then you need to break up your company network into smaller logical network. As example, set 10.10.0.0/24 only for Sales; set 10.10.1.0/24 only for Accounting; and so on. Also as the thread shows, you need either a layer-3 switch or a router with a layer-2 switch that is capable to do inter-VLAN routing and trunking.
Check out the following FAQ for sample implementation
»Cisco Forum FAQ »Should I use Layer-3 switch or router?
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by aryoba 
last modified: 2009-06-17 12:08:44 |
