Power over Ethernet on the Cisco Catalyst 4500E Series Platform Data Sheet

The Cisco^® Catalyst^® 4500E Series platform offers a variety of choices in power supplies to enable the desired Power over Ethernet (PoE) scale and chassis configuration. Note that the terms “Power over Ethernet” and “inline power” are synonymous and can be used interchangeably. PoE has four versions: Cisco Catalyst 4500 Prestandard PoE (Prestandard PoE), 802.3af-compliant PoE (15W), 802.3at-compliant PoE Plus (PoE+) (30W), and Universal PoE (UPOE) (60W). Every Cisco Catalyst 4500 Series chassis and PoE power supply supports the Cisco Catalyst 4500 Prestandard PoE, the IEEE 802.3af standard PoE, and IEEE 802.3at-compliant PoEP power implementation, helping ensure backward compatibility with existing Cisco powered devices.

All Cisco Catalyst 4500 Series PoE Line Cards can distinguish an IEEE or Cisco Catalyst 4500 Prestandard powered device from an unpowered network interface card (NIC) to help ensure that power is applied only when an appropriate device is connected.

Cisco Catalyst 4500 Prestandard PoE

Cisco Catalyst 4500 Power Supplies have complete support for the Prestandard PoE. The first generation of Cisco Catalyst 4500 Prestandard PoE was designed to power devices such as Cisco IP phones and access points. This prestandard solution had relatively low power requirements (approximately 6 to 7 watts).

IEEE Standard PoE(P)

PoE is the capability to provide up to 15.4W of power over 100m of standard Category 3 (or better) unshielded twisted pair (UTP) cables when an IEEE 802.3 af-compliant device is attached to the PoE line-card port. IEEE 802.3at-compliant PoE+ extends the Power over Ethernet capability to up to 30W over 100m of Category 5e (or better) UTP cables.

UPOE

Universal Power Over Ethernet (UPOE) is an enhancement to the PoEP (802.3at) standard to allow powered devices up to 60W to connect over a single Category 5e cable. Standard PoEP uses only 2 twisted pairs (out of 4) in the Ethernet cable. UPOE uses all 4 twisted pairs to deliver 60W to the port. The additional power that UPOE offers over standard PoE extends the advantages of PoE to next-generation powered workspace devices such as virtual desktop displays, workgroup switches, and physical access controllers. All Cisco Catalyst 4500E Series UPOE Line Cards support standard PoE as well as Cisco Prestandard PoE. When deploying UPOE devices, Category 5e (or better) UTP cable is recommended.

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 help ensure that power outages will not affect network availability.

Deploying PoE on the Cisco Catalyst 4500E Series

PoE deployment is extremely easy on the Cisco Catalyst 4500E Series platform. All Cisco Catalyst 4500 Series PoE Line Cards automatically detect and power all attached powered devices. Moreover, the Cisco Catalyst 4500 Series returns unused port power to the system power budget for use by other devices because it supports the IEEE 802.3optional power classifications. Finer granularity for the budgeted power is achieved on Cisco power devices that support Cisco Discovery Protocol.

The Cisco Catalyst 4500E Series offers several internal power supplies for multiple deployment scenarios, including small and large deployments in AC or DC environments for data-only configurations, and scalability up to 60W per port for PoE, PoEP, and UPOE configurations.

All the Cisco Catalyst E-Series Chassis models share a common power-supply form factor. Each Cisco Catalyst 4500 Series chassis is designed for 1 + 1 power redundancy while meeting the needs of PoE demand. In addition to power resiliency, the Cisco Catalyst 4500 Series includes 1 + 1 supervisor-engine redundancy (Cisco Catalyst 4507R+E, and 4510R+E models only) and software-based fault tolerance. Integrated resiliency in both hardware and software minimizes network downtime, helping ensure workforce productivity, profitability, and customer success.

Table 1 gives an overview of various classes of PoE devices.

Table 1.       Overview of PoE Power Classifications (Measured at the Switch Port)

Comparison between Cisco Prestandard PoE, 802.3af-Compliant PoE, and 802.3at-Compliant PoE

PoE device densities achieved with the Cisco Catalyst 4500 Power Supply vary depending on the classification of PoE device being powered. The difference in PoE scalability with a chosen power supply in 1 + 1 redundancy mode is highlighted in Table 2.

Table 2.       Number of Powered Devices Supported When Using Power Supplies in a 1 + 1 Mode Using IEEE 802.3af-Compliant Line Cards

Cisco Catalyst 4500E Series Power-Supply Options: AC and DC

The Cisco Catalyst 4500E Series offers a variety of power supplies and accessories to meet the diverse needs of enterprise and service provider customers. All available Cisco Catalyst 4500 Series Power Supplies can be used for both PoE and data-only deployments.

The Cisco Catalyst 4500E Series offers several AC power supplies: 1000W (data only), 1400W (data only), 1300W (data and PoE), 2800W (data and PoE), 4200W (data and PoE), 6000W (data and PoE), and 9000W (data and PoE). All Cisco Catalyst 4500 AC power supplies are single-phase and operate between 100 and 240 VAC except the 2800WAV pwr supply which is 200-240VAC input only.

The Cisco Catalyst 4500E Series has two DC power options: one is optimized for data-only deployments in service provider central offices (part number PWR-C45-1400DC), and the other is used for high-power PoE deployments (PWR-C45-1400DC-P). All DC power supplies are designed to operate between -44 and -72 VDC.

Cisco Catalyst 4500E Series Service Provider DC Power Supply

This section is applicable only to the power supply for data-only deployments in service provider central offices (PWR-C45-1400DC). The triple-input 1400-WDC power supply is optimized for service provider central-office deployments. By providing multiple inputs, the service provider DC power supply allows central-office technicians to customize the output power to meet their application needs. Many central-office deployments require only a fraction of the 1400W available in the service provider power supply. With low-current inputs, technicians can connect the supply to smaller fuses and breakers. The service provider power supply makes it possible to deploy a Cisco Catalyst 3-slot chassis with a single 15A circuit. Likewise, it is possible to deploy a fully populated Cisco Catalyst 10-slot chassis with one 15A and two 20A circuits rather than a single 60A connection, which often requires rack rewiring (Table 3).

Table 3.       Triple-Input 1400-WDC Power-Supply Input Modes

Cisco Catalyst 4500E Series Dual-Input AC PoE Power Supplies

There are three modes of operation supported by Cisco Catalyst 4500 Power Supplies. In all the modes the two power supplies need to be of equal wattage and type (AC/DC).

Redundant 1 + 1 Mode

In this mode the Cisco 4500 Chassis supports two power supplies, each fully capable of supporting the entire load of the switch. If one of the power supplies fails, the other power-supply unit in the chassis takes over the entire load without any downtime or discontinuity of operation while providing high availability and system resiliency. The failover is completely transparent.

Redundant N + 1 Mode

The Cisco Catalyst 4500 Chassis also supports N + 1 redundancy with N independent input circuits and safeguards against failure of one (+1) of the circuits as opposed to power supply unit failure.

Combined Mode

In this mode the power available for the entire chassis is equal to the sum of the output power of both of the power supplies times the share ratio.

P = Power output of one power-supply unit

Total combined mode power = P + P^*(share ratio)

The 9000W ACV, 6000W ACV, and 4200W ACV power supplies can also be used in the N + 1 mode of operation in addition to the 1 + 1 and the combined mode of operation. The 9000W ACV power supply offers 5 + 1, whereas the 6000W ACV and 4200W ACV power supplies offer 3 + 1 redundancy (refer to Tables 4 through 9).

9000W AC Power Supply

Table 4.       Triple-Input 9000 WAC Power-Supply Input Mode (Single Power Supply)

Table 5.       Triple-Input 9000 WAC Total Output Power in Combined Mode Power Resiliency

Note:    The 9000W AC power supply also supports a true output power consumption monitoring capability.

6000W AC Power Supply

Table 6.       Dual-Input 6000 WAC Power-Supply Input Mode (Single Power Supply)

Table 7.       Dual-Input 6000 WAC Total Output Power in Combined Mode Power Resiliency

Note:    The 6000W AC power supply also supports a true output power consumption monitoring capability.

Both 9000W ACV and 6000W ACV power supplies have input and output power-monitoring capabilities. Both power supplies can provide not only the input AC power consumed by the switch but also the instantaneous power being used by the system. This setup enables provisioning of the optimal number of power circuits in the wiring closet and accurately size the back-up power (uninterruptible power supply [UPS]) for reduced infrastructure costs. In addition, both of these power supplies are equipped with remote power-cycling functions through a relay to shut down or power-cycle the switch for maintenance when there is no access to the console or switch command-line interface (CLI). This feature helps reduce overall maintenance cost of the switch (Figure 1). A three-position terminal block, located on the lower right quadrant of the power-supply faceplate, provides the interface to the external relay controller box.

4200W AC Power Supply

Table 8.       Dual-Input 4200 WAC Power-Supply Input Mode (Single Power Supply)

Table 9.       Dual-Input 4200 WAC Total Output Power in Combined Mode Power Resiliency

Cisco Catalyst 4500E Series Power Supplies

In any deployment scenario, whether AC or DC, the Cisco Catalyst 4500 Series has the power supplies and external power devices to meet customers' power needs for data, voice, and video applications (Figure 2).

Features

Tables 10 through 12 give information about Cisco Catalyst 4500E Series power-supply specifications.

Table 10.     Cisco Catalyst 4500E Series Power-Supply Specifications (Data-Only Power Supplies)

Table 11.     Cisco Catalyst 4500E Series Power-Supply Specifications (Data and Voice)

Table 12.     Specifications of Cisco Catalyst 4500E Series

Power and MTBF Information

Table 13 gives mean-time-between-failures (MTBF) numbers for the different power supplies.

Table 13.     MTBF Numbers

Ordering Information

To place an order, visit the Cisco Ordering homepage or refer to Tables 14 through 16.

Table 14.     Cisco Catalyst 4500 Power-Supply Ordering Information

Table 15.     Cisco Catalyst 4500 Series Power-Cord Options (Data Only)

Table 16.     Cisco Catalyst 4500 Series Power-Cord Options (Data and Voice)

Cisco Limited Lifetime Hardware Warranty

The Cisco Limited Lifetime Hardware Warranty (LLW) includes 10-day advance hardware replacement for as long as the original end user owns the product. Table 17 describes the lifetime warranty.

Your formal warranty statement, including the warranty applicable to Cisco software, appears in the Cisco information packet that accompanies your Cisco product. We encourage you to review carefully the warranty statement shipped with your specific product before use.
For additional information about warranty terms, visit http://www.cisco.com/go/warranty.

Adding a Cisco technical services contract to your device coverage provides benefits not available with warranty, including access to the Cisco Technical Assistance Center (TAC), a variety of hardware replacement options to meet critical business needs, updates for licensed Cisco IOS Software, and registered access to the extensive Cisco.com knowledge base and support tools. Table 18 describes the benefits and features of Cisco Technical Services.
For information about Cisco Technical Services, go to http://www.cisco.com/go/ts.

Table 17.     Limited Lifetime Hardware Warranty

Cisco and Partner Services

Enable the innovative, secure, intelligent edge in the Borderless Networks Architecture using personalized services from Cisco and our partners. Through a discovery process that begins with understanding your business objectives, we help you integrate the next-generation Cisco Catalyst 4500-E Series Switches into your architecture and incorporate network services onto that platform. Sharing knowledge and leading practices, we support your success every step of the way as you deploy, absorb, manage, and scale new technology. Choose from a flexible suite of support services designed to meet your business needs and help you maintain high-quality network performance while controlling operating costs. Table 18 shows the Cisco Technical Services available for Cisco Catalyst 4500-E Series Switches.

For additional information about Cisco services, visit http://www.cisco.com/go/services.

Table 18.     Cisco Technical Services for Cisco Catalyst 4500-E Series Switches

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