170 | Link Layer Discovery Protocol (LLDP)w w w . d e l l . c o m | s u p p o r t . d e l l . c o mTIA-1057 (LLDP-MED) OverviewLink layer discovery protocol—media endpoint discovery (LLDP-MED)—as defined by ANSI/TIA-1057— provides additional organizationally specific TLVs so that endpoint devices and networkconnectivity devices can advertise their characteristics and configuration information; the OUI for theTelecommunications Industry Association (TIA) is 00-12-BB.• LLDP-MED Endpoint Device—any device that is on an IEEE 802 LAN network edge cancommunicate using IP and uses the LLDP-MED framework.• LLDP-MED Network Connectivity Device—any device that provides access to an IEEE 802 LANto an LLDP-MED endpoint device and supports IEEE 802.1AB (LLDP) and TIA-1057 (LLDP-MED).The Dell Force10 system is an LLDP-MED network connectivity device.With regard to connected endpoint devices, LLDP-MED provides network connectivity devices with theability to:• manage inventory• manage Power over Ethernet (PoE)• identify physical location• identify network policyLLDP-MED is designed for, but not limited to, voice over IP (VoIP) endpoints.IEEE 802.3 Organizationally Specific TLVs127 MAC/PHY Configuration/Status Indicates the capability and current setting of the duplex status and bit rate, andwhether the current settings are the result of auto-negotiation. This TLV is notavailable in the FTOS implementation of LLDP, but is available and mandatory(non-configurable) in the LLDP-MED implementation.127 Power via MDI Dell Force10 supports the LLDP-MED protocol, which recommends thatPower via MDI TLV is not implemented, and therefore Dell Force10implements Extended Power via MDI TLV only.127 Link Aggregation Indicates whether the link is capable of being aggregated, whether it is currentlyin a LAG, and the port identification of the LAG. FTOS does not currentlysupport this TLV.127 Maximum Frame Size Detects mis-configurations or incompatibility between two stations withdifferent maximum supported frame sizes.Table 14-2. Optional TLV TypesType TLV Description
