Instead of taking its eye off the ball, Cisco movement into new markets is making the company more vulnerable to market share and profit margin erosion, and competition, Metzler says. Cisco's entry into the data centre server market in 2009 cut off two channels for its product: IBM Corp. and Hewlett-Packard Co. IBM is reselling Juniper gear and also acquired blade switch maker Blade Network Technologies; HP bought 3Com and EDS, which also used to resell Cisco gear but now pushes HP's networking equipment.