D-Link DWS-4026 Product Manual - Page 263

Software User Manual 12/10/09 D-Link Unified Access System MANAGING LLDP The IEEE 802.1AB defined standard, Link Layer Discovery Protocol (LLDP), allows stations residing on an 802 LAN to advertise major capabilities and physical descriptions. This information is viewed by a network manager to identify system topology and detect bad configurations on the LAN. LLDP is a one-way protocol; there are no request/response sequences. Information is advertised by stations implementing the transmit function, and is received and processed by stations implementing the receive function. The transmit and receive functions can be enabled/disabled separately per port. By default, both transmit and receive are disabled on all ports. The application is responsible for starting each transmit and receive state machine appropriately, based on the configured status and operational state of the port. D-Link allows LLDP to have multiple LLDP neighbors per interface. The number of such neighbors is limited by the memory constraints. A product-specific constant defines the maximum number of neighbors supported by the switch. There is no restriction on the number of neighbors supported on a per LLDP port. If all the remote entries on the switch are filled up, then the new neighbors are ignored. In case of multiple VOIP devices on a single interface, the 802.1ab component sends the Voice VLAN configuration to all the VoIP devices. The LLDP folder contains links to the following page: • "Global Configuration" • "Interface Configuration" • "Interface Summary" • "Statistics" • "Local Device Information" • "Local Device Summary" • "Remote Device Information" • "Remote Device Summary" • "LLDP-MED" Document 34CSFP6XXUWS-SWUM100-D7 Managing LLDP Page 263