Cisco Catalyst 4500 2800 WAC Power Supply (PoE) PWR-C45-2800ACV Hoja De Datos
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PWR-C45-2800ACV
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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. This is
illustrated by comparing the total number of PoE devices supported by the Cisco prestandard inline power line card and the 802.3af-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
802.3af Class 1
(4W/port)
802.3af Class 2
(7W/port)
802.3af Class 0 & 3
(15.4W/port)
Cisco Pre-Standard
(6.3W/port)
1000 WAC
–
–
–
–
1400 WAC
–
–
–
–
1400 WDC
–
–
–
–
1400 WDC (triple input)
–
–
–
–
1300 WAC
144
102
46
112
2800 WAC
192
179
80
197
AC power shelf
240
240
231
240
2 AC power shelves
336
336
336
336
CISCO CATALYST 4500 SERIES POWER-SUPPLY OPTIONS: AC AND DC
The Cisco Catalyst 4500 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 Series offers AC power with several internal supplies: 1000W (data only), 1400 WAC (data only), 1300W (data and PoE),
and 2800W (data and PoE). When more than 2800W 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.