Quit lldpcli.

Display general help or help about a command. Also, you can get help using the completion or by pressing the ? key. Completion and inline help may be unavailable, however, if lldpcli was compiled without readline support but help command is always available.

Display information about each neighbor known by lldpd(8) daemon. With summary, only the name and the port description of each remote host will be displayed. On the other hand, with details, all available information will be displayed, giving a verbose view. When using hidden, also display remote ports hidden by the smart filter. When specifying one or several ports, the information displayed is limited to the given list of ports.

Display information about each local interface known by lldpd(8) daemon. With summary, only the name and the port description of each local interface will be displayed. On the other hand, with details, all available information will be displayed, giving a verbose view. When using hidden, also display local ports hidden by the smart filter. When specifying one or several ports, the information displayed is limited to the given list of ports.

Display information about local chassis. With summary, most details are skipped. On the other hand, with details, all available information will be displayed, giving a verbose view.

Watch for any neighbor changes and report them as soon as they happen. When specifying ports, the changes are only reported when happening on the given ports. hidden, summary and details have the same meaning as previously described. If limit is specified, lldpcli will exit after receiving the specified number of events.

Display global configuration of lldpd(8) daemon.

Report LLDP-related statistics, like the number of LLDPDU transmitted, received, discarded or unrecognized. When specifying ports, only the statistics from the given port are reported. With summary the statistics of each port are summed.

Make lldpd(8) update its information and send new LLDP PDU on all interfaces.

Override system hostname with the provided value. By default, the system name is the FQDN found from the resolved value of uname -n. As a special value, use "." (dot) to use the short hostname instead of a FQDN.

Do not override system hostname and restore the use of the node name.

Override chassis description with the provided value instead of using kernel name, node name, kernel version, build date and architecture.

Do not override chassis description and use a value computed from node name, kernel name, kernel version, build date and architecture instead.

Override chassis ID with the provided value instead of using MAC address from one interface or host name.

Do not override chassis ID, but instead use a value computed from one of the interface MAC addresses (or host name if none is found).

Override platform description with the provided value instead of using kernel name. This value is currently only used for CDP.

Do not override platform description and use the kernel name. This option undoes the previous one.

Override system capabilities with the provided value instead of using kernel information. Several capabilities can be specified, separated by commas. Only available capabilities can be enabled. Valid capabilities are: Here is an example of use:

Do not override capabilities, but instead use the kernel information. This option undoes the previous one.

Specify as comma separated values (CSV) which interfaces to listen upon and send LLDPDU from. Without this option, lldpd will use all available physical interfaces. This option can use wildcards. Several interfaces can be specified separated by commas. It is also possible to remove an interface by prefixing it with an exclamation mark. It is possible to allow an interface by prefixing it with two exclamation marks. An allowed interface beats a forbidden interface which beats a simple matched interface. For example, with eth*,!eth1,!eth2 lldpd will only use interfaces starting with eth with the exception of eth1 and eth2. While with *,!eth*,!!eth1 lldpcli will use all interfaces, except interfaces starting with eth with the exception of eth1. When an exact match is found, it will circumvent some tests. For example, if eth0.12 is specified, it will be accepted even if this is a VLAN interface.

Remove any previously configured interface pattern and use all physical interfaces. This option undoes the previous one.

Specify interfaces whose configuration is permanently kept by lldpd. By default, lldpd disregards any data about interfaces when they are removed from the system (statistics, custom configuration). This option allows one to specify a pattern similar to the interface pattern. If an interface disappears but matches the pattern, its data is kept in memory and reused if the interface reappears at some point. For example, on Linux, one could use the pattern eth*,eno*,enp*, which should match fixed interfaces on most systems.

Remove any previously configured permanent interface pattern. Any interface removed from the system will be forgotten. This option undoes the previous one.

Some OSes allow the user to set a description for an interface. Setting this option will enable lldpd to override this description with the name of the peer neighbor if one is found or with the number of neighbors found.

Do not update interface description with the name of the peer neighbor. This option undoes the previous one.

Enable promiscuous mode on managed interfaces.

When the interface is not managed any more (or when quitting lldpd), the interface is left in promiscuous mode as it is difficult to know if someone else also put the interface in promiscuous mode.

This option is known to be useful when the remote switch is a Cisco 2960 and the local network card features VLAN hardware acceleration. In this case, you might not receive LLDP frames from the remote switch. The most plausible explanation for this is that the frame is tagged with some VLAN (usually VLAN 1) and your network card filters VLANs. This is not the only available solution to work around this problem. If you are concerned about performance issues, you can also tag VLAN 1 on each interface instead.

Currently, this option has no effect on anything other than Linux. On other OSes, either disable VLAN acceleration, tag VLAN 1 or enable promiscuous mode manually on the interface.

Do not set promiscuous mode on managed interfaces. This option does not disable promiscuous mode on interfaces already using this mode.

Specify the management addresses of this system as comma separated values (CSV). As for interfaces (described above), this option can use wildcards and inversions. Without this option, the first IPv4 and the first IPv6 are used. If an exact IP address is provided, it is used as a management address without any check. If only negative patterns are provided, only one IPv4 and one IPv6 address are chosen. Otherwise, many of them can be selected. To remove IPv6 addresses, use !*:*. If an interface name is matched, the first IPv4 address and the first IPv6 address associated with this interface will be chosen.

Unset any specific pattern for matching management addresses. This option undoes the previous one.

Set the type of src mac in lldp frames sent on bond slaves

Valid types are:

Default value for bond-slave-src-mac-type is local. Some switches may complain when using one of the two other possible values (either because 00:00:00:00:00:00 is not a valid MAC or because the MAC address is flapping from one port to another). Using local might lead to a duplicate MAC address on the network (but this is quite unlikely).

Change the maximum number of neighbors accepted (for each protocol) on an interface. This is a global value. The default is 32. This setting only applies to future neighbors.

The destination MAC address used to send LLDPDU allows an agent to control the propagation of LLDPDUs. By default, the 01:80:c2:00:00:0e MAC address is used and limits the propagation of the LLDPDU to the nearest bridge (nearest-bridge). To instruct lldpd to use the 01:80:c2:00:00:03 MAC address instead, use nearest-nontpmr-bridge instead. To use the 01:80:c2:00:00:00 MAC address instead, use nearest-customer-bridge instead.

Enable advertisements of the chassis capabilities TLV. Currently the default.

Disable advertisements of the chassis capabilities TLV.

Enable advertisements of the management address TLV. Currently the default.

Disable advertisements of the management address TLV.

Force port ID subtype. By default, lldpd will use the MAC address as port identifier and the interface name as port description, unless the interface has an alias. In this case, the interface name will be used as port identifier and the description will be the interface alias. With this command, you can force the port identifier to be the interface name (with ifname), the MAC address (with macaddress) or a local value (with value). In the latest case, the local value should be provided.

Force port description to the provided string.

Change transmit delay to the specified value in seconds. The transmit delay is the delay between two transmissions of LLDP PDU. The valid range is 1 through 3600 in seconds. The default value is 30 seconds. Note: lldpd also starts another system based refresh timer on each port to detect changes such as a hostname. This is the value of the tx-interval multiplied by 20.

You can specify an interval value in milliseconds by appending a "ms" suffix to the figure (e.g. "configure lldp tx-interval 1500ms" is 1.5s, not 1500s). In this case the TTL for received and sent LLDP frames is rounded up to the next second. Note: the effective interval can be limited by the operating system capabilities and CPU speed.

Change transmit hold value to the specified value. This value is used to compute the TTL of transmitted packets which is the product of this value and of the transmit delay. The valid range is 1 through 100. The default value is 4 and therefore the default TTL is 120 seconds.

Configure the administrative status of the given port. By default, all ports are configured to be in rx-and-tx mode. This means they can receive and transmit LLDP frames (as well as other protocols if needed). In rx-only mode, they won't emit any frames and in tx-only mode, they won't receive any frames. In disabled mode, no frame will be sent and any incoming frame will be discarded. This setting does not override the operational mode of the main daemon. If it is configured in receive-only mode (with the -r flag), setting any transmit mode won't have any effect.

Configure the given port to send LLDP frames over a specified VLAN. With VLAN Identifier (VID) as vlan_id, Priority Code Point (PCP) as priority, and Drop Eligible Indicator (DEI) as dei. lldpd accepts LLDP frames on all VLANs.

Emit a custom TLV for OUI oui, with subtype subtype and optionally with the bytes specified in content. Both oui and content shall be a comma-separated list of bytes in hex format. oui must be exactly 3 bytes long. If add is specified then the TLV will be added. This is the default action. If replace is specified then all TLVs with the same oui and subtype will be replaced.

When no oui is specified, remove all previously configured custom TLV. When OUI oui and subtype subtype is specified, remove specific instances of custom TLV.

Configure LLDP-MED fast start mechanism. When a new LLDP-MED-enabled neighbor is detected, fast start allows lldpd to shorten the interval between two LLDPDU. enable should enable LLDP-MED fast start while tx-interval specifies the interval between two LLDPDU in seconds. The valid interval range is 1 through 3600 in seconds. The default interval is 1 second. Once 4 LLDPDU have been sent, the fast start mechanism is disabled until a new neighbor is detected.

Disable LLDP-MED fast start mechanism.

Advertise a coordinate based location on the given ports (or on all ports if no port is specified). The format of latitude is a decimal floating point number followed either by N or S. The format of longitude is a decimal floating point number followed either by E or W. altitude is a decimal floating point number followed either by m when expressed in meters or f when expressed in floors. A space is expected between the floating point number and the unit. datum is one of those values:

• WGS84
• NAD83
• NAD83/MLLW

A valid use of this command is:

Advertise a civic address on the given ports (or on all ports if no port is specified). country is the two-letter code representing the country. The remaining arguments should be paired to form the address. The first member of each pair indicates the type of the second member which is a free-form text. Here is the list of valid types:

• language
• country-subdivision
• county
• city
• city-division
• block
• street
• direction
• trailing-street-suffix
• street-suffix
• number
• number-suffix
• landmark
• additional
• name
• zip
• building
• unit
• floor
• room
• place-type
• script

A valid use of this command is:

Advertise the availability of an ELIN number. This is used for setting up emergency calls. If the provided number is too small, it will be padded with 0. Here is an example of use:

Advertise a specific network policy for the given ports (or for all ports if no port was provided). Only the application type is mandatory. application should be one of the following values:

• voice
• voice-signaling
• guest-voice
• guest-voice-signaling
• softphone-voice
• video-conferencing
• streaming-video
• video-signaling

The unknown flag tells that the network policy for the specified application type is required by the device but is currently unknown. This is used by Endpoint Devices, not by Network Connectivity Devices. If not specified, the network policy for the given application type is defined.

A VLAN specified with vlan tells which 802.1q VLAN ID has to be advertised for the network policy. A valid value is between 1 and 4094. tagged tells that the VLAN should be tagged for the specified application type.

priority allows one to specify IEEE 802.1d / IEEE 802.1p Layer 2 Priority, also known as Class of Service (CoS), to be used for the specified application type. This field is usually ignored if no VLAN is specified. The names match 802.1D-2004 standard (table G-2). Some more recent standards may use different labels. Only the numeric values should be relied upon. The accepted labels are:

dscp represents the DSCP value to be advertised for the given network policy. DiffServ/Differentiated Services Code Point (DSCP) value as defined in IETF RFC 2474 for the specified application type. Value: 0 (default per RFC 2475) through 63. Note: The class selector DSCP values are backwards compatible for devices that only support the old IP precedence Type of Service (ToS) format. (See the RFCs for what these values mean)

A valid use of this command is:

Override hardware-revision with the provided value. By default, the hardware-revision is fetched from /sys/class/dmi

Do not override hardware-revision and restore the use of the /sys/class/dmi value.

Override software-revision with the provided value. By default, the software-revision is fetched from uname

Do not override software-revision and restore the use of the uname value.

Override firmware-revision with the provided value. By default, the firmware-revision is fetched from /sys/class/dmi

Do not override firmware-revision and restore the use of the /sys/class/dmi value.

Override serial-number with the provided value. By default, the serial-number is fetched from /sys/class/dmi

Do not override serial-number and restore the use of the /sys/class/dmi value.

Override manufacturer with the provided value. By default, the manufacturer is fetched from /sys/class/dmi

Do not override manufacturer and restore the use of the /sys/class/dmi value.

Override model with the provided value. By default, the model is fetched from /sys/class/dmi

Do not override model and restore the use of the /sys/class/dmi value.

Override asset with the provided value. By default, the asset is fetched from /sys/class/dmi

Do not override asset and restore the use of the /sys/class/dmi value.

Advertise the LLDP-MED POE-MDI TLV for the given ports or for all interfaces if no port is provided. One can act as a PD (power consumer) or a PSE (power provider). No check is done on the validity of the parameters while LLDP-MED requires some restrictions:

• PD shall never request more power than physical 802.3af class.
• PD shall never draw more than the maximum power advertised by PSE.
• PSE shall not reduce power allocated to PD when this power is in use.
• PSE may request reduced power using conservation mode
• Being PSE or PD is a global parameter, not a per-port parameter. lldpcli does not enforce this: a port can be set as PD or PSE. LLDP-MED also requires a PSE to have only one power source (primary or backup). Again, lldpcli does not enforce this. Each port can have its own power source. The same applies for PD and power priority. LLDP-MED MIB does not allow this kind of representation.

Valid types are:

Valid sources are:

Valid priorities are:

value should be the total power in milliwatts required by the PD device or available by the PSE device.

Here is an example of use:

Advertise Dot3 POE-MDI TLV for the given port or for all ports if none was provided. One can act as a PD (power consumer) or a PSE (power provider). This configuration is distinct from the configuration of the transmission of the LLDP-MED POE-MDI TLV but the user should ensure the coherency of those two configurations if they are used together.

supported means that MDI power is supported on the given port while enabled means that MDI power is enabled. paircontrol is used to indicate whether pair selection can be controlled. Valid values for powerpairs are:

When specified, class is a number between 0 and 4.

The remaining parameters are in conformance with 802.3at and are optional. type should be either 1 or 2, indicating whether the device conforms to 802.3at type 1 or 802.3at type 2. Values of source and priority are the same as for LLDP-MED POE-MDI TLV. requested and allocated are expressed in milliwats.

Here are two valid uses of this command:

Pause lldpd operations. lldpd will not send or receive any more frames. This can be undone with resume command. This only works interactively as lldpd asks lldpcli to unpause after reading the configuration file.

Resume lldpd operations. lldpd will start to send and receive frames. This command is issued internally after processing the configuration but can be used at any time if a manual pause command is issued.