Cisco Cisco 2106 Wireless LAN Controller 白皮書
Total Economic Impact Study of Unified Wireless Network
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• Mitigating security risk was another major catalyst for migrating to a centrally managed,
wireless architecture. By allowing the system to detect and shut down rogue access points,
organizations can proactively find and eliminate potential security or ad hoc interferences;
which is critical in many organizations especially where compliance with data security
standards is concerned. It also simplifies any investigation effort and reduces the costs
associated with periodic site survey audits.
organizations can proactively find and eliminate potential security or ad hoc interferences;
which is critical in many organizations especially where compliance with data security
standards is concerned. It also simplifies any investigation effort and reduces the costs
associated with periodic site survey audits.
TEI Framework
Introduction
From the information provided in the in-depth interviews, Forrester has constructed a TEI
framework for those organizations considering implementation of a Cisco Unified Wireless Network.
The objective of the framework is to identify the cost, benefit, flexibility, and risk factors that impact
the investment decision.
framework for those organizations considering implementation of a Cisco Unified Wireless Network.
The objective of the framework is to identify the cost, benefit, flexibility, and risk factors that impact
the investment decision.
Composite Organization
Based on the interviews with the four existing customers provided by Cisco, Forrester constructed a
TEI framework, a composite company, and an associated ROI analysis that illustrates the areas
impacted financially:
TEI framework, a composite company, and an associated ROI analysis that illustrates the areas
impacted financially:
• The composite organization that Forrester synthesized from these results represents a US-
based organization with 5,000 employees.
• Prior to migration, the total number of access points reached 750 distributed across four
campuses: 500 access points in headquarters, and 100, 100, and 50 in each of three
regional campuses. The organization expects to use WLAN-based voice and location
services in the future.
regional campuses. The organization expects to use WLAN-based voice and location
services in the future.
• Two years ago, the organization’s IT staff migrated its WLAN deployment from autonomous
wireless solutions to a centrally managed, wireless architecture. By centrally managing the
implementation, the organization gained operational efficiency within IT and its business
units. To complete the migration, the organization used the free software to upgrade its
existing 700 802.11a/b/g standalone access points to operate as 802.11a/b/g lightweight
access points. The remaining 50 Aironet access points that could not be migrated using the
free software upgrade were traded in for new Aironet 802.11 a/b/g lightweight access
points.
implementation, the organization gained operational efficiency within IT and its business
units. To complete the migration, the organization used the free software to upgrade its
existing 700 802.11a/b/g standalone access points to operate as 802.11a/b/g lightweight
access points. The remaining 50 Aironet access points that could not be migrated using the
free software upgrade were traded in for new Aironet 802.11 a/b/g lightweight access
points.
Framework Assumptions
Table 2 lists the discount rate used in the PV and NPV calculations and time horizon used for the
financial modeling.
financial modeling.
Table 2: General Assumptions
General assumptions
Value
Discount rate
10%
Length of analysis
Three years
Source: Forrester Research, Inc.