Cisco Catalyst WS-C2960PD-8TT-L-M WS-C2960PD-8TT-L-M Manuale Utente
Codici prodotto
WS-C2960PD-8TT-L-M
Q&A
© 2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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Cisco Catalyst 2960 Series Switches
Product Overview
Q.
What is the Cisco Catalyst 2960PD-8TT-L compact switch?
A.
The Cisco
®
Catalyst
®
2960PD-8TT-L switch has eight 10/100 Mbps ports and receives power
over the Gig uplink port from an upstream power over Ethernet (PoE) switch. The Cisco
Catalyst 2960 powered device (PD) switch is ideal for deployments outside the wiring closet
such as conference rooms and classrooms with spacing and wiring constraints.
Q.
How can the Cisco Catalyst 2960PD-8TT-L compact switch be powered?
A.
The Cisco Catalyst 2960PD-8TT-L can be powered by another PoE switch, a power adaptor or
power injectors that support 802.3af, including AIR-PWRINJ4. The Cisco Catalyst 2960PD-
8TT-L switch prioritizes the power adaptor over PoE input when both the power adaptor and
the PoE input port are activated. The Cisco Catalyst 2960PD-8TT-L power adaptor and power
cord are optional and sold separately
Q.
What are the benefits of Power over Ethernet ?
A.
Power over Ethernet can provide a lower total cost of ownership for deployments that
incorporate Cisco IP phones and Cisco Aironet
®
wireless LAN access points, as well as any
IEEE 802.3af compliant end device. Power over Ethernet removes the need for wall power to
each PoE-enabled device and eliminates the cost for additional electrical cabling that would
otherwise be necessary in IP phone and wireless LAN deployments. PoE switches also
eliminate the need for power injectors and PoE mid-spans for powering IP devices.
Q.
How many devices can the Cisco Catalyst 2960 Series power?
A.
The Cisco Catalyst 2960-48PST-L can support 48 PoE ports with total PoE power output
capacity at 370W. Taking advantage of Cisco Catalyst Intelligent Power Management, the
Cisco Catalyst 2960-48PST-L configuration can deliver the necessary power to support 24
ports at 15.4W, 48 ports at 7.7W, or any combination in between. The Cisco Catalyst 2960-
24PC-L can support 24 simultaneous full-powered PoE devices at 15.4W for maximum
powered-device support. The Cisco Catalyst 2960-24LT-L can support eight PoE devices at
15.4W.
Q.
Can Cisco Catalyst 2960 LAN Base switches support devices that require more than
15.4W?
A.
No, Cisco Catalyst 2960 LAN Base switches support only up to 15.4W on PoE ports. The
Cisco Catalyst 2960-24PC-L can support 24 simultaneous full-powered PoE port at 15.4W for
maximum powered-device support. The Cisco Catalyst 2960-24LT-L24 has 24 10/100 ports
with 8 simultaneous full-powered PoE ports at 15.4W. For support of higher than 15.4W,
Cisco Catalyst 3560-E and 3750-E series switches are recommended.
Q.
Does the Cisco Catalyst 2960 Series support standards-based Power over Ethernet?
A.
Yes. The Cisco Catalyst 2960 Series supports IEEE 802.3af, and it provides investment
protection for the installed base of Cisco IP phones and Cisco Aironet wireless LAN access
points by also supporting the Cisco pre-standard Power over Ethernet (inline power).