When you enable the advertise med power-via-mdi command in CONFIGURATION mode,advertisement is enabled for all the interfaces. To enable advertisement for a specific interface, useINTERFACE Configuration mode.NOTE: If you also configure LLDP to use the 802.3 TLV format, 802.3 overrides the advertise medpower-via-mdi settings. For more information, see Advertising Extended Power Though dot3–TLVs.Parameterspower-via-mdi — Enter the keyword power-via-mdi to advertise IEEE 802.1ab MED Extended power-via-mdi TLV.• Configure the system or an interface to advertise IEEE 802.1ab extended power-via-mdi TLV.LLDP CONFIGURATION or INTERFACE LLDP CONFIGURATION modeadvertise med power-via-mdiExample of Advertising the Extender Power through MDI TLVs in LLDP Configuration ModeThe following example configures all the interfaces to advertise IEEE 802.1ab power through MDI.Dell(conf-lldp)#advertise med power-via-mdiExample of Advertising the Extender Power through MDI TLVs in Interface LLDP Configuration ModeThe following example configures interface peGigE 0/0/1 to advertise IEEE 802.1ab power through MDI.Dell(conf)#interface peGigE 0/0/1Dell(conf-if-pegi-0/0/1)#protocol lldpDell(conf-if-pegi-0/0/1-lldp)#advertise med power-via-mdiAdvertising Extended Power Thoughdot3–TLVsThe power device sends the following information in the IEEE 802.3 power-via-mdi TLV.1 Power Class — Dell Networking OS honors and displays the power class in the show power inlinecommand in EXEC mode (the PD-requested power value must be within the class max watts limit).2 Type — Dell Networking OS uses type only when the type is Type1 or Type2 PD and displays the type inthe show power inline command in EXEC mode. The Dell Networking OS does not use Type1 orType2 PSE requests.3 Priority — Dell Networking OS uses priority for priority calculation.4 PD requested power value — Dell Networking OS uses this value for power allocation.5 PSE allocated power value — Dell Networking OS uses this value to check whether the PD is in syncwith the PSE.To enable the system or interface to advertise IEEE 802.3 power-via-mdi TLV to advertise its powernegotiation capabilities with the powered devices using LLDP, use the advertise dot3–tlv power—via—mdi command. You can configure this command either on a specific interface or globally. This commandprovides advanced power management between LLDP-MED endpoints and network connected devices. Itallows an endpoint to communicate more precise required power requirements and enables the portPower over Ethernet (PoE) 881
