Users Guide

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Advertising the Extended Power through MDI
The power device sends the following information in the LLDP-MED extended power-via-MDI TLV.
1. Power Requirement: Dell Networking OS uses it for power allocation
2. Power Priority — Critical, High, or Low: Dell Networking OS uses it for power priority calculation.
3. External Power Source: Dell Networking OS does not use this information. IEEE 802.3at power-via-
mdi TLV
To configure the system or an interface to advertise IEEE 802.1ab extended power-via-mdi TLV, use the
advertise med power-via-mdi command.
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, use
INTERFACE Configuration mode.
NOTE: If you also configure LLDP to use the 802.3 TLV format, 802.3 overrides the advertise
med power-via-mdi
settings. For more information, see Advertising Extended Power Though
dot3–TLVs.
Parameters
power-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 mode
advertise med power-via-mdi
Example of Advertising the Extender Power through MDI TLVs in LLDP Configuration Mode
The following example configures all the interfaces to advertise IEEE 802.1ab power through MDI.
Dell(conf-lldp)#advertise med power-via-mdi
Example of Advertising the Extender Power through MDI TLVs in Interface LLDP Configuration
Mode
The following example configures interface peGigE 0/0/1 to advertise IEEE 802.1ab power through
MDI.
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 med power-via-mdi
Power over Ethernet (PoE)
817