NOTE: 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 information
on this topic, see the "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. For more information,
see Advertising device capability, network policy, PoE status and location data on page 189.
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 (see Configuring location data for LLDP-MED devices on page 193.)
• 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
configuration 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 currently supports.(Default: enabled)
This TLV cannot be disabled unless the network_policy, poe, and location_id
TLVs are already disabled.
network_policy
This TLV enables the switch port to advertise its configured network policies (voice
VLAN, Layer 2 QoS, Layer 3 QoS), and allows LLDP-MED endpoint devices to
autoconfigure the voice network policy advertised by the switch. This also enables
the use of SNMP applications to troubleshoot statically configured endpoint network
policy mismatches.(Default: Enabled)
Network policy is advertised only for ports that are configured as members of the
voice VLAN. If the port belongs to more than one voice VLAN, the voice VLAN with
the lowest-numbered VID is selected as the VLAN for voice traffic. Also, this TLV
cannot be enabled unless the capability TLV is already enabled.
For more information, see Network policy advertisements on page 190.
Table Continued
Chapter 8 Configuring for Network Management Applications 191
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