Deploying Ip Phones-Lldp-Med Devices - HP MSM317 Deployment Manual

Deploying IP phones—LLDP-MED devices
IEEE 802.1AB LLDP provides a standards-based method for network devices to discover each other
and exchange information about their functionality. The MSM7xx Controller and MSM317 support
LLDP-MED, which extends the LLDP standard to support advanced features on the network edge for
VoIP endpoint devices with LLDP-MED capabilities. The extensions to LLDP include the specification of
additional TLV (Type, Length, and Value) entries for VoIP management.
LLDP-MED capable VoIP phones do not require manual VLAN tagging. Instead, the phones receive
their voice VLAN, QoS, and DSCP settings from the MSM317 through a network policy TLV and can
immediately begin communication using tagged traffic. For example deployments of LLDP-MED
capable IP phones with the MSM317, see the "VoIP/LLPD-MED Use Cases" section at the end of
this guide.
Figure 12: The MSM7xx Controller lets you define voice TLV settings and enables a Network Policy TLV for voice traffic on the
port. If you plan to use the same voice VLAN across a group of MSM317s, you can enable the TLV at the group level.
Note:
For more information on deploying LLPD-MED IP devices, see the
HP MSM7xx Controllers Management and Configuration Guide, LLDP
chapter, and the HP MSM317 Access Device Installation and Getting
Started Guide, configuration chapter.
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