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HP ProCurve 2520 Planning And Implementation Manual: Procurve 2910al-48g-poe+ Configuration

Procurve power over ethernet (poe/poe+).
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Planning and Implementation for the 2910al PoE+ Switches
Planning Your PoE Configuration

ProCurve 2910al-48G-PoE+ Configuration

PoE+ power requirements are figured differently for the 2910al-48G-PoE+
switch, see PoE+ Power on
contains entries that show the PoE+ power available for the 2910al-48G-PoE+
switch.
In the default configuration PoE+ power priority is determined by port
number, with the lowest numbered port (port 1) having the highest priority,
and the highest numbered port (port 48) having the lowest priority.
N o t e
It is the ports configured with the highest priority of either bank (1-24 or
25-48) that will receive PoE+ power first. For example, if the highest priority
ports have been re-configured to be 23, 24 and 47, 48, then they will receive
PoE+ power before the lower priority ports.
*
Status of the Back
Spd mode:
off=10 Mbps,
Mdl
EPS
RPS
ProCurve Switch
3
5
7
2910bl-48G-PoE
Link
1
Mode
J9148A
PoE+
Power
Fault
Act
Status
Locator
PoE
FDx
LED
Mode
Tmp
Spd
*
Fan
PoE
Test
Usr
Console
Link
2
4
6
8
Mode
Reset
Clear
12 ports can receive up to 30
watts of PoE+ power
Figure 7-3. Example of a 2910al-48G-PoE+ Switch
Internal PoE+
Power
Supply
For example, the switch starts with 382 watts. It takes 360.0 watts to fully
provision 12 ports at 30 watts per port (plus 6 watts to account for load
fluctuations), leaving 22 watts to be returned to the pool of available watts.
Since a port requires 33 watts to power up a PoE+ device, there is not enough
available power to power another device.
7-4
2 flash=100 Mbps,
on=1 Gbps,
3 flash=10 Gbps
PoE+ Integrated 10/100/1000Base-T Ports (1 - 48T) — Ports are Auto-MDIX
9
11
Link
13
Mode
15
17
19
21
23
10
12
Link
14
16
18
20
22
24
Mode
or
All 24 ports can receive up to 15.4
watts of PoE power
Source of
Watts
Power
Available
382
page
2-15. The table in this example configuration
Link
25
Mode
27
29
31
33
35
Link
Link
26
28
30
32
34
36
Mode
Link
or
48 ports can receive up to 7.0
# of Ports Powered and
Average watts/Port
12 @ average 30 W each
24 @ average 15.4 W each
48 @ average 7.5 W each
48 @ average 4.0 W each
Dual-Personality Ports: 10/100/1000-T (T) or SFP (S)
37
Mode
39
41
43
45
47
Link
45
Mode
47
T
T
S
38
40
42
44
46
48
46
48
Mode
T
T
Link
S
Mode
watts of PoE power
Redundant # of Ports
Powered and Average watts/
Port
None
S
S

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