Cisco Catalyst 4500 1300 WAC Power Supply (PoE) Guia De Especificação
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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
101
45
113
2800 WAC
192
178
80
198
AC power shelf (with 1400W-P)
240
318
144
353
2 AC power shelves
384
384
345
384
4200 WAC
384
384
222
384