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Link Layer Discovery Protocol (LLDP)
Issue 4 August 2006 97
A 4600 Series IP Telephone initiates LLDP after receiving an LLDPDU message from an
appropriate system. Once initiated, the telephones send an LLDPDU every 30 seconds with the
following contents:
Table 8: LLDPDU Transmitted by the 4600 Series IP Telephones
Category TLV Name (Type) TLV Info String (Value)
Basic Mandatory Chassis ID IPv4 IP address of telephone.
Basic Mandatory Port ID MAC address of the telephone.
Basic Mandatory Time-To-Live 120 seconds.
Basic Optional System Name The Host Name sent to the DHCP server in
DHCP option 12.
Basic Optional System Capabilities Bit 2 (Bridge) will be set in the System
Capabilities if the telephone has an internal
Ethernet switch. If Bit 2 is set in Enabled
Capabilities then the secondary port is
enabled.
Bit 5 (Telephone) will be set in the System
Capabilities. If Bit 5 is set in the Enabled
Capabilities than the telephone is registered.
Basic Optional Management Address Mgmt IPv4 IP address of telephone.
Interface number subtype = 3 (system port).
Interface number = 1.
OID = SNMP MIB-II sysObjectID of the
telephone.
IEEE 802.3
Organization
Specific
MAC / PHY
Configuration / Status
Reports autonegotiation status and speed of
the uplink port on the telephone.
TIA LLDP MED LLDP-MED
Capabilities
Media Endpoint Discovery - Class III - IP
Telephone.
TIA LLDP MED Network Policy Tagging Yes/No, VLAN ID for voice, L2 Priority,
DSCP Value.
TIA LLDP MED Inventory – Hardware
Revision
MODEL - Full Model Name.
TIA LLDP MED Inventory – Firmware
Revision
BOOTNAME.
TIA LLDP MED Inventory – Software
Revision
APPNAME.
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