PoE/PoE+ Planning and Implementation Guide 2011-09
1-11
Introduction
PoE Capabilities of the HP Products
Power Redundancy for the E2620 Switches
The internal power supply in these switches provides both the 12V (RPS) and
54V (EPS) circuits. If the 54V portion of the power supply fails, it will only shut
down the PoE connections. However, if the 12V portion of the power supply
fails, it will shut down the entire switch. Therefore it is important to provide
a redundant power supply for both the 12V and 54V circuits. It is recommended
that both EPS and RPS be connected to provide full redundancy.
HP Redundant/External Power Supplies (RPS/EPS) can be connected to the
E2620 Switches for redundant 12 V system power (RPS) and to provide for
additional PoE+ provisioning. For RPS power, the E2620 Switches can be
connected to either an HP 620 RPS/EPS (J8696A) or HP 630 RPS/EPS
(J9443A). For additional PoE+ EPS power, only the 630 can be used. The 620
does not provide 54 V for PoE+, only 50 V for PoE, and the E2620 Switches do
not support connections to the 620 for EPS.
The E2620 Switches provide up to 30W from each port (25.5W for PD, 4.5W
for cable dissipation); the number of ports that can be operated at full power
is limited to 12 ports at full power, and/or 24 ports at 15.4W. To increase the
capacity of the switch, an external power supply can be attached to double
the total system capacity to 24 ports at 30W, or 48 ports at 15.4W.
The power supplies for these switches are optimized to provide the most
efficient and cost effective solution.
HP ProCurve 2910al Switches
The HP ProCurve Switch 2910al-48G-PoE+ (J9148A), has 44 Integrated PoE+
auto-sensing 10/100/1000Base-T RJ-45 ports with four dual-personality Gigabit
Uplink ports.
The HP ProCurve Switch 2910al-24G-PoE+ (J9146A), has 20 Integrated PoE+
auto-sensing 10/100/1000Base-T RJ-45 ports with four dual-personality Gigabit
Uplink ports.
Power
Fault
Locator
Console
LED
Mode
Clear
Reset
PoE+ Integrated 10/100/1000Base-T Ports (1 - 48T) Ports are Auto-MDIX
Test
Tm
p
Status
Dual-Personality Ports: 10/100/1000-T (T) or SFP (S)
!
Use only one (T or S) for each Port
PoE
Fan
45
S
47
S
46
S
48
S
*
Spd mode: off=10 Mbps, 2 flash=100 Mbps, on=1 Gbps, 3 flash=10 Gbps
FDx
Spd
PoE
Act
*
38
40
43
41
39
37
12
10
864
2
119
75
3
1
42
44
Link
Mode
Link Mode
Link
Mode
47
T
45
T
46
T
48
T
Link
Mode
Status of the Back
Mdl RP
SEPS
ProCurve Switch
2910bl- 48G-PoE
J9148A
Link Mode
Link Mode
24
222018
16
14
232119171513
Link Mode
Link
Mode
36
34323028
26
353331292725
Link Mode
Link
Mode
Usr
PoE+
Power
Fault
Locator
Console
Spd mode: off = 10 Mbps
2 flash = 100 Mbps
on = 1 Gbps
3 flash = 10 Gbps
*
LED
Mode
Clear
Reset
PoE+ Integrated 10/100/1000Base-T Ports (1 - 24T) Ports are Auto-MDIX
Test
Tm
p
Status
Dual-Personality Ports: 10/100/1000-T (T) or SFP (S)
!
Use only one (T or S) for each Port
PoE
Fan
21
S
23
S
22
S
24
S
FDx
Spd
PoE
Act
*
14
16
19
17
15
13
18
20
Link Mode
23
T
21
T
22
T
24
T
Link
Mode
Status of the Back
Mdl RP
SEPS
ProCurve Switch
2910bl-24G-PoE
J9146A
Link Mode
Link Mode
12
10864
2
1197531
Link Mode
Link
Mode
Usr
Auxiliary Port
PoE+