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Riverbed Scales Up: Page 2 of 4

That's a dig at F5 Networks Inc. (Nasdaq: FFIV), which already claims OC12 (622 Mbit/s) capacity for its WAN acceleration gear. "One of our differentiators has been our ability to scale," says Amit Dhillon, F5's director of product management.

Prices go up to about $119,000 for the 6020 and $50,000 for the Interceptor.

Riverbed is also adding a passel of enhancements with the 3.0 release of its RiOS software. Topping the list is the addition of QOS, using differentiated services (DiffServ) tags to recognize the differences among voice, video, and data.

Riverbed's earlier success was based more on performance -- improving the speeds of enterprise applications -- and on being easy to install. It's now focusing on larger-scale installations. "In the early stage of the adoption curve, scaling isn't the issue," says Wolford.

The idea isn't to supplant router QOS, as Steelhead will continue to honor router QOS markings. But some customers would prefer for Riverbed to do the prioritizing, Wolford says.