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Configuring the Switch
3-184
3
CLI
– This example shows statistics for port 13.
Power Over Ethernet Settings
The switch can provide DC power to a wide range of connected devices, eliminating
the need for an additional power source and cutting down on the amount of cables
attached to each device. Once configured to supply power, an automatic detection
process is initialized by the switch that is authenticated by a PoE signature from the
connected device. Detection and authentication prevent damage to non-802.3af
compliant devices.
The switch’s power management enables total switch power and individual port
power to be controlled within a configured power budget. Port power can be
automatically turned on and off for connected devices, and a per-port power priority
can be set so that the switch never exceeds its allocated power budget. When a
device is connected to a switch port, its power requirements are detected by the
switch before power is supplied. If the power required by a device exceeds the
power budget of the port or the whole switch, power is not supplied.
Ports can be set to one of three power priority levels, critical, high, or low. To control
the power supply within the switch’s budget, ports set at critical or high priority have
power enabled in preference to those ports set at low priority. For example, when a
device is connected to a port set to critical priority, the switch supplies the required
power, if necessary by dropping power to ports set for a lower priority. If power is
Console#show interfaces counters ethernet 1/13
4-231
Ethernet 1/13
Iftable stats:
Octets input: 868453, Octets output: 3492122
Unicast input: 7315, Unitcast output: 6658
Discard input: 0, Discard output: 0
Error input: 0, Error output: 0
Unknown protos input: 0, QLen output: 0
Extended iftable stats:
Multi-cast input: 0, Multi-cast output: 17027
Broadcast input: 231, Broadcast output: 7
Ether-like stats:
Alignment errors: 0, FCS errors: 0
Single Collision frames: 0, Multiple collision frames: 0
SQE Test errors: 0, Deferred transmissions: 0
Late collisions: 0, Excessive collisions: 0
Internal mac transmit errors: 0, Internal mac receive errors: 0
Frame too longs: 0, Carrier sense errors: 0
Symbol errors: 0
RMON stats:
Drop events: 0, Octets: 4422579, Packets: 31552
Broadcast pkts: 238, Multi-cast pkts: 17033
Undersize pkts: 0, Oversize pkts: 0
Fragments: 0, Jabbers: 0
CRC align errors: 0, Collisions: 0
Packet size <= 64 octets: 25568, Packet size 65 to 127 octets: 1616
Packet size 128 to 255 octets: 1249, Packet size 256 to 511 octets: 1449
Packet size 512 to 1023 octets: 802, Packet size 1024 to 1518 octets: 871
Console#
Summary of Contents for 6152PL2 FICHE
Page 2: ......
Page 6: ...vi ...
Page 8: ...viii ...
Page 32: ...Tables xxxii ...
Page 38: ...Figures xxxviii ...
Page 56: ...Initial Configuration 2 10 2 ...
Page 378: ...Configuring the Switch 3 322 3 ...
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