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NEW YORK, Feb 9 (Reuters) – Network equipment maker Cisco
Systems Inc’s (NASDAQ:CSCO) CEO John Chambers spooked investors for
the third time in as many quarters, warning of dwindling public
spending and weaker margins from tough competition.

Cisco shares fell 10 percent after hours on Wednesday.
Shares of peers such as Juniper Networks Inc (NYSE:JNPR), F5
Networks Inc (NASDAQ:FFIV) and Riverbed Technology Inc (NASDAQ:RVBD) also
declined, but the recurring let-downs raised questions about
whether Cisco is still the industry bellwether it once was.

Chambers upset investors last August with a warning of
"unusual uncertainty," and followed up last quarter with a
weaker-than-expected outlook that he blamed on weak orders from
debt-burdened government agencies.

He offered no relief this quarter.

"Unfortunately, we believe that our concerns in the public
sector will continue to be challenging in the developed world
for the next several quarters," he said, adding that Cisco’s
government accounts in the United States, Europe and Japan had
all been hit in the fiscal second quarter.

"The challenges at state, local, and eventually federal
level in our opinion will worsen over the next several
quarters," he said of the U.S. market.

Chambers is one of Silicon Valley’s longest-serving
executives, and investors take his views on industry trends
seriously. He was one of the first tech executives to flag the
impact of the financial crisis on the sector in late 2007.

Investors have also looked to Cisco for signs of overall
technology spending due to the breadth of its customer base,
which ranges from small U.S. businesses to foreign