* Q3 adj EPS 66 cents vs est 59 cents
* Sees Q4 EPS of 69 cents to 71 cents
* Shares up 6 percent
BANGALORE, July 21 (Reuters) - Network equipment maker F5 Networks Inc (FFIV.O) posted a quarterly profit that topped Wall Street expectations and forecast a strong finish to the year, sending its shares up 6 percent.
Results for the quarter were driven by solid demand for its products that optimize and speed up Internet traffic within a network.
The company reported third-quarter earnings of $40.5 million, or 50 cents a share, compared with $22.8 million, or 29 cents in the year-ago quarter. Excluding stock-based compensation, earnings were 66 cents a share.
Revenue rose 45.7 percent to $230.5 million.
Analysts were expecting the company to earn 59 cents a share on revenue of $218.4 million, according to Thomson Reuters I/B/E/S.
The company expects fourth-quarter earnings of 69 cents to 71 cents a share on revenue of $242 million to $247 million.
Analysts expect earnings of 62 cents a share on revenue of $230.4 million for the period.
Shares of the company, which competes with Cisco Systems (CSCO.O), Citrix Systems (CTXS.O) and Juniper Networks (JNPR.N), rose $4.00 to $77.15 in trading after the bell after closing at $73.11 Wednesday on Nasdaq. (Reporting by Saumyadeb Chakrabarty in Bangalore; Editing by Maju Samuel)