Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 818

Advertising Extended Power Though dot3-TLVs The 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 inline command 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 in the show power inline command in EXEC mode. The Dell Networking OS does not use Type1 or Type2 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 sync with the PSE. To enable the system or interface to advertise IEEE 802.3 power-via-mdi TLV to advertise its power negotiation 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 command provides advanced power management between LLDP-MED endpoints and network connected devices. It allows an endpoint to communicate more precise required power requirements and enables the port extender to allocate less power to the endpoint, while making more power available to other port extender ports. By default, advertising extended power through dot3-TVLs is disabled. NOTE: The port extender performs Layer 2 classification and participates in LLDP power negotiation only when in Class mode. To use this feature, configure PoE in power management Class mode. For information about Class mode, see Enabling PoE/PoE+ on a Port. • Configure the system or an interface to advertise IEEE 802.3 power-via-mdi TLV to advertise its power negotiation capabilities with the powered devices using LLDP. LLDP CONFIGURATION or INTERFACE LLDP CONFIGURATION mode advertise dot3-tlv power-via-mdi Example of Advertising in LLDP Configuration Mode The following example configures all the interfaces to advertise extended power though dot3-TLVs in configuration mode. Dell(conf-lldp)#advertise dot3-tlv power-via-mdi Example of Advertising in LLDP Interface Configuration Mode The following example configures interface peGigE 0/0/1 to advertise extended power though dot3-TLVs. Dell(conf)#interface peGigE 0/0/1 Dell(conf-if-pegi-0/0/1)#protocol lldp Dell(conf-if-pegi-0/0/1-lldp)#advertise dot3-tlv power-via-mdi 818 Power over Ethernet (PoE)