Networking company Cisco Systems said it has agreed to buy NeoPath Networks for an undisclosed amount.

NeoPath, of Santa Clara, Calif., improves the performance of network storage systems.

Cisco was an investor in Neopath, along with venture capital firms August Capital, DCM-Doll Capital Management, Gabriel Venture Partners and Dot Edu Ventures. They invested more than $23 million.

Cisco is also a strategic partner of NeoPath.