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Power Over Ethernet (PoE) Operation
Planning and Implementing a PoE Configuration
Assigning Priority Policies to PoE Traffic
You can use the configurable QoS (Quality of Service) features in the switch
to create prioritization policies for traffic moving through PoE ports. Table 11-
3 lists the available classifiers and their order of precedence.
Table 11-3. Classifiers for Prioritizing Outbound Packets
Priority QoS Classifier
UDP/TCP Application Type (port)
Device Priority (destination or source IP address)
IP Type of Service (ToS) field (IP packets only)
Protocol Priority (IP, IPX, ARP, DEC LAT, AppleTalk, SNA, and NetBeui)
VLAN Priority
Incoming source-port on the switch
Incoming 802.1p priority (present in tagged VLAN environments)
For more on this topic, refer to the chapter titled “Quality of Service: Managing
Bandwidth More Effectively” in the Advanced Traffic Management Guide for
your switch.
PoE Operating Notes
■ Simply disabling a PoE port does not affect power delivery through
that port. To cycle the power on a PD receiving power from a PoE
port on the switch, disable, then re-enable the power to that port. For
example, to cycle the power on a PoE device connected to port 1 on
an xl PoE module installed in slot D:
HPswitch(config)# no interface d1 power
HPswitch(config)# interface d1 power
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