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Lldp-med capabilities, Extended power-via-mdi information – Brocade FastIron Ethernet Switch Administration Guide User Manual

Page 197

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LLDP-MED attributes advertised by the Brocade device

LLDP-MED attributes are only advertised on a port if LLDP-MED is enabled (which is done by enabling
the LLDP-MED capabilities TLV), the port operating mode is receive and transmit (the default), and the
port has received an LLDP-MED advertisement from an Endpoint. By default, the Brocade device will
automatically advertise the following LLDP-MED attributes when the above criteria are met:

• LLDP-MED capabilities
• Location ID
• Network policy
• Power-via-MDI information

NOTE
Although the Location ID and Network policy attributes are automatically advertised, they will have no
effect until they are actually defined.

LLDP-MED capabilities

When enabled, LLDP-MED is enabled, and the LLDP-MED capabilities TLV is sent whenever any other
LLDP-MED TLV is sent. When disabled, LLDP-MED is disabled and no LLDP-MED TLVs are sent.

The LLDP-MED capabilities advertisement includes the following information:

• The supported LLDP-MED TLVs
• The device type (Network Connectivity device or Endpoint (Class 1, 2, or 3))

By default, LLDP-MED information is automatically advertised when LLDP-MED is enabled. To disable
this advertisement, enter a command such as the following.

device(config)#no lldp advertise med-capabilities ports e 2/4 to 2/12

NOTE
Disabling the LLDP-MED capabilities TLV disables LLDP-MED.

To re-enable the LLDP-MED Capabilities TLV (and LLDP-MED) after it has been disabled, enter a
command such as the following.

device(config)#lldp advertise med-capabilities ports e 2/4 to 2/12

The LLDP-MED capabilities advertisement will appear similar to the following on the remote device, and
in the CLI display output on the Brocade device (show lldp local-info ).

+ MED capabilities: capabilities, networkPolicy, location, extendedPSE MED device

type : Network Connectivity

Syntax: [no] lldp advertisemed-capabilities ports ethernet port-list | all

Extended power-via-MDI information

The extended Power-via-MDI TLV enables advanced power management between LLDP-MED
Endpoints and Network Connectivity Devices. This TLV provides significantly more information than the
802.1AB Power-via-MDI TLV referenced in

802.3 capabilities

on page 185. For example, this TLV

LLDP-MED attributes advertised by the Brocade device

FastIron Ethernet Switch Administration Guide

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