Cisco 2960 8TC Hardware Installation Guide - Page 22

Front Panel Description Chapter 1 Product Overview PoE Ports (Only Catalyst 2960 PoE Switches) This section applies only to the Catalyst 2960-24PC-L, 2960-24LT-L, 2960-24PC-S, 2960-24LC-S, 2960 48PST-L, and 2960-48PST-S switches. Warning Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if interconnections are made using uninsulated exposed metal contacts, conductors, or terminals. Avoid using such interconnection methods, unless the exposed metal parts are located within a restricted access location and users and service people who are authorized within the restricted access location are made aware of the hazard. A restricted access area can be accessed only through the use of a special tool, lock and key or other means of security. Statement 1072 • The 10/100 ports on the Catalyst 2960-24PC-L, 2960-48PST-L, 2960-48PST-S, and 2960-24PC-S, switches and ports 1 to 8 of the 10/100 ports on the Catalyst 2960-24LT-L and 2960-24LC-S switches provide PoE support for devices that are compliant with IEEE 802.3af. The Cisco prestandard PoE is also supported for Cisco IP Phones and Cisco Aironet Access Points. • Each of the PoE ports on the Catalyst 2960 switches deliver up to 15.4 W of PoE. The Catalyst 2960-24PC-L, 2960-48PST-L, 2960-48PST-S, and 2960-24PC-S switches deliver a maximum power output of approximately 370-W PoE power. The Catalyst 2960-24LT-L and 2960-24LC-S switches deliver a maximum power output of approximately 124-W PoE power. • On a per-port basis, you can control whether or not a Catalyst 2960 PoE port automatically provides power when an IP phone or an access point is connected. The device manager, Network Assistant, and the CLI provide PoE settings for each 10/100 PoE port: - Auto: When you select the Auto setting, the port provides power only if a valid powered device, such as an IEEE 802.3af-compliant powered device, a Cisco prestandard IP phone, or a Cisco prestandard Cisco access point, is connected. The Auto setting is the default. - Never: When you select the Never setting, the port does not provide power even if a Cisco IP phone or an access point is connected. • You also can connect a Cisco IP Phone or Cisco Aironet Access Point to a Catalyst 2960 PoE switch 10/100 port and to an AC power source for redundant power. The powered device might switch to the AC power source as its primary power source upon being connected to it. In that case, the PoE port becomes the backup power source for the powered device. If the primary source fails, the second power source becomes the primary power source to the powered device. During the power transfer, an IP phone might reboot or reestablish link with the switch. For information about configuring and monitoring PoE ports, see the switch software configuration guide. For information about Cisco IP Phones and Cisco Aironet Access Points, see the documentation that came with your IP phone or access point. Many legacy powered devices, including older Cisco IP phones and access points that do not fully support IEEE 802.3af, might not support PoE when connected to the switches by a crossover cable. 1-12 Catalyst 2960 Switch Hardware Installation Guide OL-7075-09