Power over Ethernet on the Cisco Catalyst 4500 E-Series Platform
The Cisco® Catalyst® 4500 E-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 E-Series switch. Although all references to "Power over Ethernet" (PoE), "inline power," and "voice" power supply and line cards are synonymous, there are three versions: Cisco prestandard PoE, 802.3af-compliant PoE and PoEP (30W). Every Cisco Catalyst 4500 Series chassis and PoE power supply supports the IEEE 802.3af standard, the Cisco prestandard and PoEP power implementation, helping ensure backward compatibility with existing Cisco powered devices. PoEP is standard on Cisco Catalyst 4500 E-Series platform.
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 help ensure that 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(P)
PoE provides -48-VDC power over standard Category 5 unshielded twisted-pair (UTP) cable up to 100 meters when an IEEE 802.3 af-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. PoEP extends the power over ethernet cable to up to 30W per port.
Deploying PoE on the Cisco Catalyst 4500 E-Series
When the Cisco Catalyst 4500 E-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 they are 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 E-Series offers internal power supplies and external power devices for multiple deployment scenarios, including small and large deployments in AC or DC environments for data-only configurations, and scalability up to 30W per port for PoE and PoEP configurations.
The Cisco Catalyst 4510R-E (10 slot), 4507R-E (7 slot), 4506-E (6 slot), and 4503-E (3 slot) models as well as non-E-Series classic chassis 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-E/4507R and 4510R-E/4510R 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 IEEE 802.3af power classifications.
Table 1. Overview of IEEE 802.3af Power Classifications (Measured at the Switch Port)
IEEE 802.3af Class
Power Available at the Switch Port
0
15.4W: Default class
1
4W
2
7W
3
15.4W
4
Future expansion
Cisco prestandard PoE
6.3W
Comparison Between Cisco Prestandard PoE and 802.3af-Compliant PoE
From a power perspective, there are several significant differences between the Cisco prestandard and 802.3af-compliant line cards. The differences are illustrated by comparing the total number of PoE devices supported by the Cisco prestandard inline power line card and the 802.3 af-compliant line cards (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
Standard 802.3af Class 1 (4W per port)
(Standard 802.3af Class 2 (7W per port)
Standard 802.3af Classes 0 and 3 (15.4W per port)
PoEP
(30W Per Port)
Cisco Prestandard (6.3W perport)
1000 WAC
-
-
-
-
-
1400 WAC
-
-
-
-
-
1400 WDC
-
-
-
-
-
1400 WDC (triple input)
-
-
-
-
-
1300 WAC
186
106
48
24
118
2800 WAC
325
186
84
43
206
AC power shelf (with 1400W-P)
384
332
150
77
384
2 AC power shelves
384
384
301
155
384
4200 WAC
384
384
223
114
384
6000 WAC
384
384
289
148
384
Cisco Catalyst 4500 E-Series Power-Supply Options: AC and DC
The Cisco Catalyst 4500 E-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 data-only deployments, which typically require just a few hundred watts. For deployments that dictate support for PoE power, Cisco offers several options.
The Cisco Catalyst 4500 E-Series offers AC power with several internal supplies: 1000W (data only), 1400W (data only), 1300W (data and PoE), 2800W (data and PoE), 4200W (data and PoE), and 6000W (data and PoE). When 5500W or less are required, the 4200W power supply can provide 5500W while protecting the chassis from a power or power-supply sub-unit failure. When more than 5500W of redundant data and PoE are required for a Cisco Catalyst 4500 Series chassis in an AC-powered environment, Cisco offers an external AC power shelf that houses two 2500-WAC power supplies. When two power shelves are combined, they can produce 7500W-the remaining 2500W supply can be used for N + 1 protection. All Cisco Catalyst 4500 AC power supplies are single phase.
The Cisco Catalyst 4500 E-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).
Cisco Catalyst 4500 E-Series External AC Power Shelf and 1400-WDC Power Supply with Integrated Power Entry Module
The Cisco Catalyst 4500 E-Series external AC power shelf must be used in conjunction with the 1400-WDC-P power supply. In addition to providing power for the chassis, fans, and non-PoE line cards, the 1400-WDC power supply contains a power entry module (PEM). The PEM is used to pass additional power through to the chassis backplane, power demanded by the PoE line cards. The chassis power trace used for PoE is independent from the one used by the supervisor engine(s), fan tray, and backplane components. The 1400-WDC power supply can accept up to 7500 WDC for data and PoE applications. Up to 1400W can be dedicated for data (supervisor[s], fan tray, etc.), while the remaining power is passed through the PEM and is used for PoE.
When only one external AC power shelf is used (with two 2500-WAC power supplies), it provides the 1400-WDC power supply with 5000W of DC power. When two AC power shelves are strapped together, the Cisco Catalyst 4500 Series can provide up to 7500W of DC power (3 + 1 redundant).
Cisco Catalyst 4500 E-Series Service Provider DC Power Supply
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 4503 with a single 15A circuit. Likewise, it is possible to deploy a fully populated Cisco Catalyst 4510R with one 15A and two 20A circuits rather than a single 60A connection, which often requires rack rewiring (Table 3).
Cisco Catalyst 4500 E-Series Dual Input AC PoE Power Supplies
The 6000W ACV and 4200W ACV power supplies feature combined Mode Power Resiliency as an extension of the traditional combined mode power-supply behavior. Each power supply contains two smaller power supplies (called sub-units). In Combined Mode Power Resiliency the system relies only on power from three out of four power-supply sub-units. When using 200 VAC, this feature helps ensure that maximum power is available while the switch is protected against a single input power failure or sub-unit component failure.
Table 7. Total Output Power in Combined Mode Power Resiliency
PS1-1
PS1-2
PS2-1
PS2-2
Total Output Power
110V
110V
110V
110V (hot standby)
2200W
220V
220V
220V
220V (hot standby)
4700W
Cisco Catalyst 4500 E-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 1).
Figure 1. Cisco Catalyst 4500 Series Power Supplies
Features
For information on Catalyst 4500 E-Series power-supply specifications, see Tables 8 through 11.
Note: If you purchased a Cisco Catalyst 4500 E-Series PoE line card or power supply before May 1, 2009, it is covered by the Cisco 90-Day Limited Hardware Warranty. For more information, see this document on Cisco.com: http://www.cisco.com/en/US/docs/general/warranty/English/901DEN__.html
Service and support
Cisco offers lifecycle service and support for the Cisco Catalyst 4500 Series, directly and for resale through Cisco distributors. From implementation to operation and optimization, Cisco offers advanced service and technical support.
Advanced service
Cisco Total Implementation Solutions (TIS) offers a full range of implementation solutions, including project management, project engineering, configuration, and staging and rollout coordination; Cisco TIS helps ensure correct installation and deployment. For more information about Cisco TIS, visit: http://www.cisco.com/en/US/partner/products/svcs/ps11/services_segment_category_home.html
Technical support
Cisco SMARTnet® Online and telephone support augments the customer's operations-staff resources. Support includes the ability to refresh system software at will as well as a range of Advance Replacement hardware options. Cisco SMARTnet Onsite support adds the services of a field engineer, services that can be critical when customer staffing is insufficient or unavailable for parts-replacement activities. For more information about Cisco SMARTnet support, visit: http://www.cisco.com/en/US/partner/products/svcs/ps3034/serv_category_home.html
Ordering Information
To place an order, visit the Cisco Ordering Home Page or refer to Tables 9 through 11.
Table 11. Cisco Catalyst 4500 Power-Supply Ordering Information
Part Number
Product Name
PWR-C45-1000AC
Cisco Catalyst 4500 1000 WAC Power Supply (data only)
PWR-C45-1400AC
Cisco Catalyst 4500 1400 WAC Power Supply (data only)
PWR-C45-1300ACV
Cisco Catalyst 4500 1300 WAC Power Supply (PoE)
PWR-C45-2800ACV
Cisco Catalyst 4500 2800 WAC Power Supply (PoE)
PWR-C45-1400DC-P
Cisco Catalyst 4500 1400 WDC Power Supply with PEM (PoE)
Cisco Catalyst 4500 Auxiliary Power Shelf (2 slot), including 1 (part number PWR-4502)
PWR-4502
Cisco Catalyst 4500 Auxiliary Power Shelf Redundant Power Supply
CAB-4502-DC-2M
Cisco Catalyst 4500 2 meter DC Cable set for auxiliary power shelf
CAB-4502-DC-60CM
Cisco Catalyst 4500 60 cm DC Cable set for auxiliary power shelf
Table 12. Cisco Catalyst 4500 Series Power-Cord Options (Data Only)
Power Supply
1000 WAC
1400 WAC
1400 WDC
Region/Product ID
PWR-C45-1000AC
PWR-C45-1400AC
-
Europe
CAB-7KACE=
CAB-7513ACE=
-
International
-
-
-
United States
CAB-7KAC=
CAB-7513AC=
-
Australia
CAB-7KACA=
CAB-7513ACA=
-
Italy
CAB-7KACI=
CAB-7513ACI=
-
United Kingdom
CAB-7KACU=
CAB-7513ACU=
-
Argentina
CAB-7KACR=
CAB-7513ACR=
-
South Africa
-
CAB-7513ACSA=
-
Table 13. Cisco Catalyst 4500 Series Power-Cord Options (Data and Voice)
Power Supply
1300 ACV
2800 WACV
4200 WACV
6000 WACV
1400 WDC-P
External Power
Region and Product ID
PWR C45 1300ACV
PWR C45 2800ACV
PWR C45-4200ACV
PWR C45-6000ACV
PWR C45-1400DC-P
2500W PWR-4502
Europe
CAB-7513ACE=
CAB-AC-2800W-EU=
CAB-CEE77-C19-EU
CAB-CEE77-C19-EU
-
CAB-4502AC-EU
International
N/A
CAB-AC-2800W-INT=
CAB-I309-C19-INT
CAB-I309-C19-INT
-
-
United States
CAB-7513AC=
CAB-AC-2800W-TWLK=
CAB-AC-2800W-6-20=
CAB-US515P-C19-US
CAB-L620P-C19-US
CAB-US620P-C19-US
CAB-US515P-C19-US
CAB-L620P-C19-US
CAB-US620P-C19-US
-
CAB-4502AC-US
Australia
CAB-7513ACA=
Same as international
CAB-A3112-C19-AUS
CAB-A3112-C19-AUS
-
-
Italy
CAB-7513ACI=
Same as international
CAB-C2316-C19-IT
CAB-C2316-C19-IT
-
-
United Kingdom
CAB-7513ACU=
Same as international
CAB-BS1363-C19-UK
CAB-BS1363-C19-UK
-
CAB-4502AC-UK
Argentina
CAB-7513ACR=
Same as international
Same as international
Same as international
-
-
South Africa
CAB-7513ACSA=
Same as international
Same as international
Same as international
-
-
Israel
-
-
CAB-S132-C19-ISRL
CAB-S132-C19-ISRL
-
-
* The 1300-WACV and 1400-WAC power supplies can use the power cords for the 2800-WAC power supply.
** When connecting the 1400-WDC power supply to the Cisco external AC power shelf, a Cisco cord is required. When connecting directly to a DC power source, consult local codes; the cord must not be longer than 10 meters.
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