Shares of Cisco (CSCO - Get Report) are down more than 6% after hours Wednesday after the networking-technology giant's guidance came up just short of expectations. 

The San Jose, Calif., company reported adjusted fiscal-fourth-quarter earnings of 83 cents a share against the FactSet-derived analyst estimate of 82 cents. Revenue reached $13.4 billion, an adjusted 6% year-over-year increase. Analysts had pegged revenue at $13.38 billion. 

For the first quarter, however, the company expects to earn 80 cents to 82 cents a share, compared with analysts' 83-cent expectations. Revenue is seen between flat and up 2% year over year, or between $13.07 billion and $13.33 billion. 

Analysts are expecting revenue of $13.4 billion. 

"We are committed to providing our customers ongoing value through differentiated solutions, and we are well positioned to take advantage of the long-term growth opportunities ahead," CEO Chuck Robbins said. 

For the fourth quarter, the company reported a 4% rise in service revenue while product revenue rose 6% in the quarter, led by a 14% revenue in its security division.