Power Reserve Budget

Power supply equipment (PSEs) can be categorized as either Type 1, Type 2, Type 3, or Type 4 PSEs . Type 3 PSEs support powered devices (PDs) up to class 6. Type 4 PSEs support PDs up to class 8.

ExtremeSwitching X435 Switches Only

The power budget for:
  • X435-24P-4S switches is 370W
  • X435-8P-4S switches is 124W

The power budget for the X435-8P-2T-W switch is based on the two PoE uplink ports.

Source Wattage Output
P9 + P10 Watts
0 + 0 0
30 + 0 0
60 + 0 25
90 + 0 45
0 + 30 0
30 + 30 25
60 + 30 45
90 + 30 65
0 + 60 25
30 + 60 45
60 + 60 65
90 + 60 85
0 + 90 45
30 + 90 65
60 + 90 85
90 + 90 100

ExtremeSwitching X440-G2 Switches Only

ExtremeSwitching X440-G2 has an internal PSU. The power budgets for the X440-G2-48p, X440-G2-24p, and X440-G2-12p are 740W, 380W, and 200W respectively.

ExtremeSwitching X450-G2 Switches Only

The ExtremeSwitching X450-G2 non-PoE+ models support a fixed internal 156W AC/DC PSU, whereas X450-G2 PoE+ models support dual, hot-swappable 1100W/715W/PSUs. 315W is not yet supported in X450-G2.

ExtremeSwitching X460-G2 Switches Only

The ExtremeSwitching X460-G2 supports two PSUs : 1100W and 715W. When 1100W is used, the switch is capable of delivering 850W of power. When 715W is used, the switch is capable of delivering 500W of power.

ExtremeSwitching X620-16p Switches Only

For ExtremeSwitching X620-16p, each internal PSU can provide a maximum of 380W (for 750W PSU) power budget for PoE loadings. The two power supplies are capable for supporting any of the following:
  • 16 ports running at full 802.3af loading (15.4W)
  • 16 ports running at full 802.3at loading (30W)
  • 8 ports running at full 802.3at loading (30W) and 8 ports running at PoE++ (60W)

ExtremeSwitching X465 Switches Only

ExtremeSwitching X465 48P model supports 30W PoE+. ExtremeSwitching X465 24MU-24W, 48W, 24MU, and 24W models support PoE++ Type 3 (60W) and uPoE Type 4 (90W). The following power budgets will be possible on these models:

Table 1. X465 PoE Power Budget
X465-24W X465-48P

X465-48W

X465i-48W

X465-24MU X465-24MU-24W
System pwr: 229W System pwr: 255W System pwr: 285W System pwr: 275W System pwr: 332W
PSU1 PSU2 PoE max PSU1 PSU2 PoE max PSU1 PSU2 PoE max PSU1 PSU2 PoE max PSU1 PSU2 PoE max
2000W

high line

2000W

high line

2160W 2000W

high line

2000W

high line

1440W 2000W

high line

2000W

high line

3515W* 2000W

high line

2000W

high line

1440W 2000W

high line

2000W

high line

3468W*
2000W

high line

2000W

low line

2160W 2000W

high line

2000W

low line

1440W 2000W

high line

2000W

low line

2660W* 2000W

high line

2000W

low line

1440W 2000W

high line

2000W

low line

2613W*
2000W

high line

1100W 2160W 2000W

high line

1100W 1440W 2000W

high line

1100W 2616W* 2000W

high line

1100W 1440W 2000W

high line

1100W 2569W*
2000W

high line

715W 2160W* 2000W

high line

715W 1440W 2000W

high line

715W 2265W* 2000W

high line

715W 1440W 2000W

high line

715W 2218W*
2000W

high line

350W 1989W* 2000W

high line

350W 1440W 2000W

high line

350W 1933W* 2000W

high line

350W 1440W 2000W

high line

350W 1886W*
2000W

high line

0W 1771W* 2000W

high line

0W 1440W 2000W

high line

0W 1715W* 2000W

high line

0W 1440W 2000W

high line

0W 1668W*
2000W

low line

2000W

low line

1861W 2000W

low line

2000W

low line

1440W 2000W

low line

2000W

low line

1805W 2000W

low line

2000W

low line

1440W 2000W

low line

2000W

low line

1758W
2000W

low line

1100W 1817W 2000W

low line

1100W 1440W 2000W

low line

1100W 1761W 2000W

low line

1100W 1440W 2000W

low line

1100W 1714W
2000W

low line

715W 1466W 2000W

low line

715W 1440W 2000W

low line

715W 1410W 2000W

low line

715W 1420W 2000W

low line

715W 1363W
2000W

low line

350W 1134W 2000W

low line

350W 1108W 2000W

low line

350W 1078W 2000W

low line

350W 1088W 2000W

low line

350W 1031W
2000W

low line

0W 871W 2000W

low line

0W 845W 2000W

low line

0W 815W 2000W

low line

0W 825W 2000W

low line

0W 768W
1100W 1100W 1773W 1100W 1100W 1440W 1100W 1100W 1717W 1100W 1100W 1440W 1100W 1100W 1670W
1100W 715W 1422W 1100W 715W 1396W 1100W 715W 1366W 1100W 715W 1376W 1100W 715W 1319W
1100W 350W 1090W 1100W 350W 1064W 1100W 350W 1034W 1100W 350W 1044W 1100W 350W 987W
1100W 0W 871W 1100W 0W 845W 1100W 0W 815W 1100W 0W 825W 1100W 0W 768W
715W 715W 1071W 715W 715W 1045W 715W 715W 1015W 715W 715W 1025W 715W 715W 968W
715W 350W 739W 715W 350W 713W 715W 350W 683W 715W 350W 693W 715W 350W 636W
715W 0W 486W 715W 0W 460W 715W 0W 430W 715W 0W 440W 715W 0W 383W
350W 350W 407W 350W 350W 381W 350W 350W 351W 350W 350W 361W 350W 350W 304W
350W 0W 121W 350W 0W 95W 350W 0W 65W 350W 0W 75W 350W 0W 0W

Guard Band

To reduce the chances of ports fluctuating between powered and non-powered states, newly inserted PDs are not powered when the actual delivered power for the switch is within a preset value below the configured inline power budget for that slot or switch.

This band is called the guard band and the value used is 20 W for all ExtremeSwitching series switches. However, actual aggregate power can be delivered up to the configured inline power budget for the slot or switch (for example, when delivered power from ports increases or when the configured inline power budget for the slot is reduced).

If total consumed power is within the guard band, new ports are not powered up.