Power Classifications and Deployment

The number of PDs that can be supported by the connected SecureStack PoE switch can be estimated by adding up the maximum power requirement of each connected PD according to their Power Classification rating (0 through 4).

Note: Use the highest power rating of PoE Power Class of each PD to calculate the maximum wattage. For example, such as 12.95 for a Class 0 device.

Table 1-1 Powered Device (PD) PoE Power Classifications

 

 

PD Maximum Power

Class

Usage

Range Usage

 

 

 

0

Default

0.44 to 12.95 Watts

 

 

 

1

Optional

0.44 to 3.84 Watts

 

 

 

2

Optional

3.84 to 6.49 Watts

 

 

 

3

Optional

6.49 to 12.95 Watts

 

 

 

4

Not Allowed

Reserved for Future Use

 

 

 

The example of a simple configuration shown in Figure 1‐2 has the 48 Vdc output port from a C2RPS‐POE connected to a SecureStack PoE switch (such as Enterasys Networks’ C2G124‐48P). The C2RPS‐POE connection provides the 48 Vdc and the power supply status (indicates if the power supply is okay) to the SecureStack PoE switch, which manages the 48 Vdc output to the six PDs.

Figure 1-2 Example of a C2RPS-POE Power Configuration

Æ

C2RPS-POE

POWER

 

 

 

 

 

 

 

 

 

 

Ç

 

 

 

 

 

 

 

 

 

 

 

 

 

26È27 28

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

 

17

18

19

20

21

22

23

24

25

29

30

31

32

 

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

17

 

 

 

 

 

 

 

 

 

 

 

 

 

31

33

 

 

 

 

 

 

 

 

 

 

 

 

 

 

47

MGR

RPS

UP

CPU DOWN

2

16

18

32

34

48

45 46 47 48 C2G124-48P

45

47

4648

Console

 

Å

Ä Ã

 Á À

1

Device is non-PoE compliant

6

PD, Class 4

2

PD, no Class rating

7

C2RPS-POE

3

PD, Class 2

8

48 Vdc/Status cable (DFE-POE-CBL-2M)

4

PD, Class 2

9

DTE, N-PoE-compliant switch module

5PD, Class 0

SecureStack C2 Installation Guide 1-3

Page 19
Image 19
Enterasys Networks manual Example of a C2RPS-POE Power Configuration