It turns out the same report in which Cisco is ranked second in WAN optimization controllers (WOCs) also shows Cisco losing market share and revenues in the first quarter of 2007 in the related area of application delivery controllers (ADCs).
In the taxonomy for Gartner's report titled "Market Share: Application Acceleration Equipment, Worldwide, 1Q07," WOCs are described as devices that improve application access over a WAN. Cisco's WAAS is a WOC offering. According to Gartner, so is its ACNS (Application Content Delivery Services) software, which runs on the same WAE (Wide-Area Application Engine) as its WAAS software.
ADCs, in contrast, are basically application load balancers that manage app traffic from the data center. Cisco's ACE module for its Catalyst 6500 routers -- which is marketed alongside its WAAS -- is included in Gartner's ADC count. So are Cisco's Content Services Switches (CSSs) for Web insfrastructures and the Content Switching Module (CSM) for the Catalyst 6500.
For the first quarter 2007, according to Gartner, Cisco posted $68 million in revenues for its ADCs, a 13.9 percent sequential decline. While it's still in second place after F5 Networks in ADCs, its market share dropped from 30.1 percent in the last quarter of 2006 to 27.2 percent in the first quarter this year.