THE SPECIFICATIONS AND INFORMA TION REGARDI NG THE PRODUCT S IN THIS MA NUAL ARE SUBJEC T TO CHANGE WITHOU T NOTICE. AL L
STATEMENTS, INFORMATION, AND RECOMMEN DATIONS IN THIS MANUAL ARE BELIE VED TO BE ACCUR ATE BUT ARE PRESE NTED WITHOUT
WARRANTY OF ANY KIND, EXPRESS OR I MPLIED. USE RS MUST TAKE F ULL RESPONSI BILITY FOR THEI R APPLICATION OF ANY PRODUCT S.
THE SOFTWARE LICENSE AND LIM ITED WARRANTY FO R THE ACCOMPA NYING PRODUCT ARE SET FORTH IN T HE INFORMATION PACKET THAT
SHIPPED WITH THE PRODUCT AND ARE INCORPORAT ED HEREIN BY THI S REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SO FTWARE LICENSE
OR LIMITED WARRANTY, CONTACT Y OUR CISCO REPR ESENTATIVE F OR A COPY.
The following information is for F CC comp liance of Class A devic es: This equipme nt has been teste d an d found to com ply wi th the lim its f or a Class A digital device, p ursuant
to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equip ment is oper ated in a co mmercial
environment. This equ ipment g enerates, us es, and ca n radiate ra dio-fre quency ene rgy and, if n ot installe d and used in accordan ce with the instruction man ual, may cause
harmful interference to radio communications. Operation of this equipm ent in a residential area is likely to cause h armful interfer ence, in which case users will be required
to correct the interference at their own expense.
The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate radio-fr equency en ergy. If it is no t
installed in accordance with Cisco’s installation instructions, it may cau se interference with radio and tele vision reception. This equipment has been tested and found to
comply with the limits for a Class B digital device in accordance with the specifications in part 15 of the FCC rules. These spec ifications are designed to provide reasonable
protection against su ch interfe rence in a re sidentia l install ation. Howev er, ther e is no guar antee that in terferen ce will not occur in a particular instal lation.
Modifying the equipment without Cisco’s written authorization may res ult in the equipment no longer complyin g with FCC requirements for Class A or Class B digital
devices. In that event, your right t o use the eq uipment ma y be limit ed by FCC reg ulations , and you ma y be require d to correct any interference to radio or television
communications at your own expense.
You can determine whether your equipment is causing interference by turni ng it off. If the interference stops, it was probably caused by the Cisco eq uipment or one of its
peripheral devices. I f the equipm ent cau ses interfe rence to ra dio or televi sion rece ption, tr y to correct th e inter ference by u sing one or more of the following measures:
• Turn the television or radio antenna until the interference stops.
• Move the equipment to one side or the other of the television or radio.
• Move the equipment far ther away f rom the tele vision or radio.
• Plug the equipment into an outlet that is on a different circuit from the televisio n or radio. (That is, make certain the equipment and the television or radio are on circuits
controlled by differen t circuit breakers o r fuses.)
Modifications to this product not authorized by Cisco Systems, Inc. could void the FCC approval and negate your authority to operate the product.
The Cisco implementation of TCP header compression is an adaptation of a progra m developed by the University of California, B erkeley (UCB) as part of UCB’s public
domain version of the UNIX operating system. All rights reserved. Copyrig ht © 1981, Regents of the University of Califor nia.
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www.cisco.com/go/trade marks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership
relationship between Cisco and any other company. (1110R)
Cisco Catalyst 4900M Switch Installation Guide
Copyright © 2008–2012 Cisco Systems, Inc. All rights reserved.