Cisco Systems Earnings Rise 29 Percent  CHICAGO (Reuters) - Cisco Systems Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=CSCO.O target=/stocks/quickinfo/fullquote"&gt;CSCO.O&lt;/A&gt;, the  biggest maker of equipment that directs data over the Internet,  on Tuesday said quarterly earnings rose 29 percent on stronger  demand for its networking gear.