While there is some validity to the argument that security can be handled effectively above the physical layer, the reality is a physical cable is more secure than a radio signal that has no physical limitations. Interception of data, penetration of the network and misuse of network resources by unauthorized users can expose the corporate network to theft of bandwidth and information. Implementation of applications such as SSL/SSH, VPN, 802.11i and Network Access/Admission Control on wireless networks can reduce these risks.

The obvious aspect where a wireless network excels above wired is mobility. Having the ability to connect anywhere, anytime is a powerful motivator for wireless. If the risks and bandwidth issues can be mitigated to an acceptable level for the intended use of the network, wireless may be the way to go. Remember, this is not purely a technological decision, and the technology is only a tool towards a desired result.

Costs and management

A networking rule of thumb is that the costs for cabling are primarily rooted in the labor. A purely wireless client network would still entail some Cat6 cabling, but only to the access points (or, in the case of a mesh design, only some of the access points) so a wireless design cabling costs are much lower.

Costs can also be lowered by implementing "thin" wireless access points, particularly in larger networks. Traditional wireless deployments utilize "fat" access points where each are configured individually. Centralized management system, such as the Enterasys' RoamAbout Switch System, moves all intelligence from the access points to one appliance. Because of the benefits described below, centralized access point management has become a popular method of wireless installation.