Configuring for Network Management Applications

LLDP (Link-Layer Discovery Protocol)

N o t e s

A codepoint must have an 802.1p priority before you can configure it for use

 

in prioritizing packets by VLAN-ID. If a codepoint you want to use shows No

 

Override in the Priority column of the DSCP policy table (display with show qos­

 

dscp map, then use qos-dscp map < codepoint > priority < 0 - 7 > to configure a

 

priority before proceeding. For more on this topic, refer to the chapter titled

 

“Quality of Service (QoS): Managing Bandwidth More Effectively” in the

 

Advanced Traffic Management Guide for your switch.

 

Enabling or Disabling medTlvEnable. In the default LLDP-MED

 

 

configuration, the TLVs controlled by medTlvEnable are enabled.

Syntax: [ no ] lldp config < port-list> medTlvEnable < medTlv >

Enables or disables advertisement of the following TLVs on the specified ports:

device capability TLV

configured network policy TLV

configured location data TLV (Refer to “Configuring Location Data for LLDP-MED Devices” on page 13-62.)

current PoE status TLV

(Default: All of the above TLVs are enabled.)

Helps to locate configuration mismatches by allowing use of an SNMP application to compare the LLDP-MED con­ figuration on a port with the LLDP-MED TLVs advertised by a neighbor connected to that port.

capabilities

This TLV enables the switch to determine:

which LLDP-MED TLVs a connected endpoint can discover

the device class (1, 2, or 3) for the connected endpoint

This TLV also enables an LLDP-MED endpoint to discover what LLDP-MED TLVs the switch port cur­ rently supports.

(Default: enabled)

Note: This TLV cannot be disabled unless the network_policy, poe, and location_id TLVs are already disabled.

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