Some of the biggest challenges faced in large enterprise environments are bandwidth usage, the allocation and use of IP addresses, and security. In this installment of our series on virtualization, we'll look at how virtualization intersects with each of these three issues in turn.
The bandwidth problem is simple: consolidation means increasing bandwidth requirements beyond what a single or even several GigE links can provide. On the IP address sprawl issue, the sheer size of most computing environments means that many addresses are needed, and the acquisition of other businesses creates either address overlap or address space waste. A small network can easily get away with two or three small address ranges, and that's being generous. Managing a network spanning the globe, with tens of thousands of addresses in use in various subnets is no small feat. Finally, there are varying security concerns, from the very real concerns about segregating traffic in multi-tenant environments to handling local host-level authentication and password management. With that in mind, it can be a real challenge attempting to deploy and integrate a virtualization environment into an already well-developed network. In this part of a five-part series we continue to look at the challenges and some of the steps of deploying a virtualization solution in the enterprise.
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