PoE Port Status LEDs
C-2 About PoE (Power over Ethernet)
PoE Port Status LEDs
The
PoE
port
status
of
each
10/100/1000
Mbps
RJ45
port
is
indicated
by
the
two
‐
color
RX
and
TX
LED
display
for
each
port.
To
observe
the
PoE
port
status
indications,
you
must
switch
the
SSA
from
the
default
RX/
TX
status
mode
to
the
PoE
Port
status
mode
using
the
red
PoE
button.
The
switch
operation
and
a
description
of
how
to
use
the
LED
indications
are
described
in
Allocation of PoE Power to Devices
The
S
‐
Series
firmware
determines
the
power
available
in
the
SSA
for
PoE
based
on
power
supply
status
and
power
supply
redundancy
mode.
The
system
calculates
and
reserves
the
correct
amount
of
power
required
by
the
SSA
and
then
makes
the
balance
of
power
available
for
PoE.
When
any
change
is
made
to
the
power
supply
status
or
redundancy
mode,
the
firmware
recalculates
the
power
available
for
PoE.
The
power
available
for
PoE
is
distributed
based
on
the
configured
allocation
mode:
•
Automatic
mode
(default),
in
which
available
power
is
distributed
evenly.
Any
change
in
available
power,
due
to
a
change
in
power
supply
status
or
redundancy
mode,
will
trigger
an
automatic
redistribution
of
power.
•
Manual
mode,
in
which
the
power
budget
is
manually
configured,
using
either
CLI
commands
or
the
MIBs.
The
wattage
configured
cannot
exceed
the
total
power
available
on
the
switch
for
PoE.
The
configured
wattage
assignment
is
used
to
calculate
the
total
available
PoE
power.
If
the
total
available
PoE
power
changes,
a
redistribution
of
available
power
will
occur,
applying
the
calculated
percentage.
If
the
PoE
power
needed
or
requested
exceeds
the
power
available,
the
system
will
generate
an
SNMP
trap
to
notify
the
system
manager.
For
more
information
on
configuring
allocation
mode,
see
the
Enterasys
S
‐
Series
CLI
Reference
Guide
.
Power Distribution Upon Power Supply Removal or Addition
When
a
power
supply
is
removed,
the
SSA
responds
to
the
decrease
in
available
power
by
doing
the
following:
1.
Detecting
the
power
supply
removal
and
recalculating
available
power.
2.
Subtracting
the
power
capacity
for
its
base
system
from
available
power.
3.
Distributing
remaining
power
equally
for
PoE.
4.
Dropping
support
to
PoE
devices
as
necessary
to
stay
within
the
programmed
maximum
power.
When
a
power
supply
is
added,
the
SSA
responds
to
the
increase
in
available
power
by
doing
the
following:
1.
Detecting
the
power
supply
addition
and
recalculating
available
power.
2.
Subtracting
the
power
capacity
for
its
base
system
from
available
power.
3.
Distributing
remaining
power
equally
for
PoE.
Summary of Contents for SSA-G1018-0652
Page 2: ......
Page 12: ...x ...
Page 16: ...xiv ...
Page 20: ...Getting Help xviii About This Guide ...
Page 46: ...Completing the Installation Pin Out Descriptions 2 22 Installation ...
Page 64: ...Using the OFFLINE RESET Button 3 18 Troubleshooting ...
Page 68: ...Regulatory Compliance A 4 Specifications ...
Page 76: ...Management of PoE Power to PDs C 4 About PoE Power over Ethernet ...
