Cisco Cat 4500 PWR-C45-1000AC-RF Scheda Tecnica
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PWR-C45-1000AC-RF
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DATA SHEET
CISCO CATALYST 4500 SERIES POWER-OVER-ETHERNET
CAPABILITIES AND POWER SUPPLIES
CAPABILITIES AND POWER SUPPLIES
POWER OVER ETHERNET ON THE CISCO CATALYST 4500 SERIES PLATFORM
The Cisco
®
Catalyst
®
4500 Series platform offers line cards, power supplies, and accessories (including an AC power shelf) to support 15.4W per
port simultaneously on every port in any fully loaded Cisco Catalyst 4500 Series Switch. Although all references to “Power over Ethernet” (PoE),
“inline power,” and “voice” power supply and line cards are synonymous, there are only two versions: Cisco prestandard PoE and 802.3af-compliant
PoE. Every Cisco Catalyst 4500 Series chassis and PoE power supply supports the IEEE 802.3af standard and the Cisco prestandard power
implementation, ensuring backward compatibility with existing Cisco powered devices.
All Cisco Catalyst 4500 Series PoE line cards can distinguish an IEEE or Cisco prestandard powered device from an unpowered network interface
card (NIC) to ensure power is applied only when an appropriate device is connected. With a Cisco PoE network, administrators can depend on a
robust network that is safe to deploy and simple to maintain.
PoE
PoE provides –48 VDC power over standard Category 5 unshielded twisted-pair (UTP) cable up to 100 meters when an IEEE 802.3af-compliant or
Cisco prestandard powered device is attached to the PoE line-card port. Instead of requiring wall power, attached devices such as IP phones, wireless
base stations, video cameras, and other IEEE-compliant appliances can use power provided from the Cisco Catalyst 4500 Series PoE line cards. This
capability gives network administrators centralized control over power and eliminates the need to install outlets in ceilings and other out-of-the-way
places where a powered device can be installed. When a switch is connected to an uninterruptible-power-supply (UPS) system, network
administrators can ensure that power outages will not affect network availability.
DEPLOYING PoE ON THE CISCO CATALYST 4500 SERIES
When the Cisco Catalyst 4500 Series is properly configured, implementing PoE is easy when used with a Cisco powered device that supports
Cisco Discovery Protocol. All Cisco Catalyst 4500 Series PoE line cards automatically detect an attached powered device the moment it is installed.
Moreover, the Cisco Catalyst 4500 Series returns unused port power to the system power budget for use by other devices because it supports the
IEEE802.3af optional power classifications.
The Cisco Catalyst 4500 Series offers internal power supplies and external power devices for multiple deployment scenarios. These scenarios include
small and large deployments in AC or DC environments for data-only configurations, and scalability up to 15.4W per port for PoE configurations.
The Cisco Catalyst 4510R (10 slots), Catalyst 4507R (7 slots), Catalyst 4506 (6 slots), and Catalyst 4503 (3 slots) share a common power supply
form factor. Each Cisco Catalyst 4500 Series chassis is designed for 1 + 1 power protection while meeting the needs of PoE demands. In addition to
power resiliency, the Cisco Catalyst 4500 Series includes 1 + 1 supervisor-engine redundancy (Cisco Catalyst 4507R and Catalyst 4510R only) and
software-based fault tolerance. Integrated resiliency in both hardware and software minimizes network downtime, helping ensure workforce
productivity, profitability, and customer success.