Link Layer Discovery Protocol (LLDP) | 649
Extended Power via MDI TLV
The Extended Power via MDI TLV enables advanced PoE management between LLDP-MED endpoints
and network connectivity devices. Advertise the Extended Power via MDI on all ports that are connected
to an 802.3af powered, LLDP-MED endpoint device.
• Power Type: there are two possible power types: Power Sourcing Entity (PSE) or Power Device (PD).
The Dell Force10 system is a PSE, which corresponds to a value of 0, based on the TIA-1057
specification.
• Power Source: there are two possible power sources: Primary and Backup. The Dell Force10 system
is a Primary Power Source, which corresponds to a value of 1, based on the TIA-1057 specification.
• Power Priority: there are three possible priorities: Low, High, and Critical. On Dell Force10 systems,
the default power priority is “High,” which corresponds to a value of 2 based on the TIA-1057
specification. You can configure a different power priority through the CLI, Dell Force10 also honors
the power priority value sent by the powered device. However, the CLI configuration takes
precedence.
• Power Value: Dell Force10 advertises the maximum amount of power that can be supplied on the
port. By default it is 15.4W, which corresponds to a Power Value of 130, based on the TIA-1057
specification. You can advertise a different Power Value using the
max-milliwatts option with the power
inline auto
| static command. Dell Force10 also honors the power value (power requirement) sent by the
powered device when the port is configured for
power inline auto.
Figure 30-6. Extended Power via MDI TLV
Configuring LLDP
Configuring LLDP is a two-step process:
1. Enable LLDP globally.
2. Advertise TLVs out of an interface.
Related Configuration Tasks
• Viewing the LLDP Configuration
• Viewing Information Advertised by Adjacent LLDP Agents
• Configuring LLDPDU Intervals
• Configuring Transmit and Receive Mode
• Configuring a Time to Live
• Debugging LLDP
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