Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 1913)

LLDP, LLDP-MED and Voice VLAN Introduction and Configuration
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C 70.9
LLDP-MED Operation
When LLDP is enabled, LLDP-MED is enabled by default, and uses the same LLDP
transmission and reception process described in
Table 70-3 . When LLDP receives an
advertisement indicating a newly connected LLDP-MED-capable device on a port, it
transmits one LLDP-MED advertisement per second via this port, a configurable number
of times (the fast start count). Thereafter, it sends regular advertisements at the LLDP
transmit interval. When the last advertisement for an LLDP-MED-capable device
connected to the port times out, it stops sending LLDP-MED advertisements via the port.
If LLDP-MED notifications are enabled for a port, and SNMP traps for LLDP are enabled,
LLDP-MED generates a Topology Change Notification (LLDP-MED lldpXMedTopology
ChangeDetected) when a new LLDP-MED compliant IP telephony device is connected to a
port or removed from a port. This notification includes the following information:
■ IP Phone Chassis ID and Chassis ID sub-type (IP address)
■ LLDP Endpoint Device Class
■ Switch Chassis ID (MAC address) and Port ID where the device is attached.