Management and Configuration Guide K/KA/KB.15.15

To support rapid LLDP-MED device configuration, the lldp fast-start-count command
temporarily overrides the refresh-interval setting for the fast-start-count advertisement
interval. This results in the port initially advertising LLDP-MED at a faster rate for a limited time.
Thus, when the switch detects a new LLDP-MED device on a port, it transmits one LLDP-MED
advertisement per second out the port for the duration of the fast-start-count interval. In
most cases, the default setting should provide an adequate fast-start-count interval.
(Default: 5 seconds)
NOTE: This global command applies only to ports on which a new LLDP-MED device is detected.
It does not override the refresh-interval setting on ports where non-MED devices are detected.
Enabling or Disabling TLVs controlled by 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
• 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.
This TLV enables the switch to determine:capabilities
• 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)
NOTE: This TLV cannot be disabled unless the network_policy, poe, and
location_id TLVs are already disabled.
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
network-policy
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)
NOTE: 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.
This TLV enables the switch port to advertise its configured location data (if
any.)
location_id
(Default: Enabled)
228 Configuring for Network Management Applications