Command Line Interface
4-212
4
LLDP Commands
Link Layer Discovery Protocol (LLDP) is used to discover basic information about
neighboring devices on the local broadcast domain. LLDP is a Layer 2 protocol that
uses periodic broadcasts to advertise information about the sending device.
Advertised information is represented in Type Length Value (TLV) format according
to the IEEE 802.1ab standard, and can include details such as device identification,
capabilities and configuration settings. LLDP also defines how to store and maintain
information gathered about the neighboring network nodes it discovers. This
information can be used by SNMP applications to simplify troubleshooting, enhance
network management, and maintain an accurate network topology.
Link Layer Discovery Protocol - Media Endpoint Discovery (LLDP-MED) is an
extension of LLDP intended for managing endpoint devices such as Voice over IP
phones and network switches. The LLDP-MED TLVs advertise information such as
network policy, power, inventory, and device location details. LLDP and LLDP-MED
information can be used by SNMP applications to simplify troubleshooting, enhance
network management, and maintain an accurate network topology.
Table 4-1 LLDP Commands
Command Function Mode Page
lldp Enables LLDP globally on the switch GC 4-214
lldp holdtime-multiplier Configures the time-to-live (TTL) value sent in LLDP
advertisements
GC 4-214
lldp medFastStartCount Configures how many medFastStart packets are
transmitted
GC 4-215
lldp notification-interval Configures the allowed interval for sending SNMP
notifications about LLDP changes
GC 4-215
lldp refresh-interval Configures the periodic transmit interval for LLDP
advertisements
GC 4-216
lldp reinit-delay Configures the delay before attempting to re-initialize
after LLDP ports are disabled or the link goes down
GC 4-217
lldp tx-delay Configures a delay between the successive
transmission of advertisements initiated by a change in
local LLDP MIB variables
GC 4-217
lldp admin-status Enables LLDP transmit, receive, or transmit and receive
mode on the specified port
IC 4-218
lldp notification Enables the transmission of SNMP trap notifications
about LLDP changes
IC 4-218
lldp mednotification Enables the transmission of SNMP trap notifications
about LLDP-MED changes
IC 4-219
lldp basic-tlv
management-ip-address
Configures an LLDP-enabled port to advertise the
management address for this device
IC 4-220
lldp basic-tlv
port-description
Configures an LLDP-enabled port to advertise its port
description
IC 4-221
lldp basic-tlv
system-capabilities
Configures an LLDP-enabled port to advertise its
system capabilities
IC 4-221
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