Management and Configuration Guide K/KA/KB.15.15

supply) can also be connected to the 5400zl/8200zl switches to provide extra or redundant PoE
power.
For example, if the 5406zl has two 24-port PoE modules (J8702A) installed, and all ports are
using 15.4 watts, then the total wattage used is 739.2 watts (48 x 15.4.) To supply the necessary
PoE wattage a J8713A power supply is installed in one of the power supply slots.
To gain redundant power, a second J8713A must be installed in the second power supply slot. If
the first power supply fails, then the second power supply can supply all necessary power.
See the HP PoE Planning and Implementation Guide for detailed information about the PoE/PoE+
power requirements.
Assigning PoE ports to VLANs
If your network includes VLANs, you may want to assign various PoE-configured ports to specific
VLANs. For example, if you are using PoE telephones in your network, you may want to assign
ports used for telephone access to a VLAN reserved for telephone traffic.
Applying security features to PoE configurations
You can utilize security features built into the switch to control device or user access to the network
through PoE ports in the same way as non-PoE ports.
Using Port Security, you can configure each switch port with a unique list of MAC addresses for
devices that are authorized to access the network through that port. For more information, see the
Access Security Guide for your switch.
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. The available classifiers and their order of precedence
are show in Table 7 (page 123).
Table 7 Classifiers for prioritizing outbound packets
QoS classifierPriority
UDP/TCP application type (port)1
Device priority (destination or source IP address)2
IP type of service (ToS) field (IP packets only)3
VLAN priority4
Incoming source-port on the switch5
Incoming 802.1 priority (present in tagged VLAN environments)6
For more on this topic, see the Advanced Traffic Management Guide.
About PoE operation
Using the commands described in this chapter, you can:
• Enable or disable PoE operation on individual ports.
• Monitor PoE status and performance per module.
• Configure a non-default power threshold for SNMP and Event Log reporting of PoE consumption
on either all PoE ports on the switch or on all PoE ports in one or more PoE modules.
• Specify the port priority you want to use for provisioning PoE power in the event that the PoE
resources become oversubscribed.
About PoE operation 123