LLDP Commands
4-341
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.
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 4-86 LLDP Commands
Command
Function
Mode
Page
lldp
Enables LLDP globally on the switch
GC
4-343
lldp holdtime-multiplier
Configures the time-to-live (TTL) value sent in LLDP
advertisements
GC
4-343
medFastStartCount
Configures how many medFastStart packets are transmitted GC
4-344
lldp notification-interval
Configures the allowed interval for sending SNMP
notifications about LLDP changes
GC
4-344
lldp refresh-interval
Configures the periodic transmit interval for LLDP
advertisements
GC
4-345
lldp reinit-delay
Configures the delay before attempting to re-initialize after
LLDP ports are disabled or the link goes down
GC
4-345
lldp tx-delay
Configures a delay between the successive transmission of
advertisements initiated by a change in local LLDP MIB
variables
GC
4-346
lldp admin-status
Enables LLDP transmit, receive, or transmit and receive
mode on the specified port
IC
4-347
lldp notification
Enables the transmission of SNMP trap notifications about
LLDP changes
IC
4-347
lldp mednotification
Enables the transmission of SNMP trap notifications about
LLDP-MED changes
IC
4-348
lldp basic-tlv
management-ip-address
Configures an LLDP-enabled port to advertise the
management address for this device
IC
4-349
lldp basic-tlv
port-description
Configures an LLDP-enabled port to advertise its port
description
IC
4-349
lldp basic-tlv
system-capabilities
Configures an LLDP-enabled port to advertise its system
capabilities
IC
4-350
lldp basic-tlv
system-description
Configures an LLDP-enabled port to advertise the system
description
IC
4-350
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