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configure lldp ports vendor-specific dot3 power-via-mdi

configure lldp ports [all | port_list] [advertise | no-advertise] vendor-specific dot3 power-via-mdi {with-classification}

Description

Configures the LLDP port to advertise or not advertise Power over Ethernet (PoE) capabilities to its neighbors.

Syntax Description

all Specifies all ports on the switch.
port_list Specifies one or more ports or slots and ports.
advertise Specifies to send the information to neighbors.
no-advertise Specifies not to send the information to neighbors.
with-classification Specifies to use LLDP for Data Link Layer Classification.

This option is available only on PoE+ ports.

Default

No advertise.

Usage Guidelines

When configured, the system includes this TLV. We recommend enabling this TLV only on PoE-capable ports.

The following information is transmitted for LLDP ports with this TLV:

  • Support PoE or not

  • Port class

    • Power sourcing equipment (PSE)

    • Powered device (PD)

  • Power pairs used to supply power

    • Signal

    • Spare

  • Power status

  • Support pairs control or not

  • Power class

    • Class0

    • Class1

    • Class2

    • Class2

    • Class3

    • Class4

Data link layer classification allows fine-grained dynamic re-allocation of power based on changing needs. This feature is enabled by enabling LLDP (transmit and receive) and configuring transmission of the power-via-MDI TLV. The ExtremeXOS software sends an LLDPDU containing a power-via-MDI TLV within 10 seconds of DLL classification being enabled. A PD may request a new power value using an LLDPDU. The allocated power might be changed if a request is received and approved after a power review. The software responds with an allocated power value within 10 seconds of receipt of an LLDPDU with a different requested power from a PD. Power allocation can be controlled to a granularity of 0.1 watts. When DLL classification is enabled, it takes precedence over physical classification.

Note

Note

For more information on advertising power support, see the configure lldp ports vendor-specific med power-via-mdi command.

Example

The following command configures all ports to advertise power capabilities to neighbors:

configure lldp ports all advertise vendor-specific dot3 power-via-mdi

History

This command was first available in ExtremeXOS 11.2.

Platform Availability

This command is available on all platforms.

Published November 2016prev | next

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