Technical Documentation

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Portable Libraries

show lldp

Syntax

show lldp<detail>

Release Information

Command introduced in Junos OS Release 11.1 for the QFX Series.

Description

Display information about Link Layer Discovery Protocol (LLDP). LLDP is used to learn and distribute device information on network links.

Options

none

—

Display LLDP information for all interfaces.

detail

—

(Optional) Display detailed LLDP information for all interfaces.

Required Privilege Level

view

Related Documentation

List of Sample Output

show lldp
show lldp detail

Output Fields

Table 1 lists the output fields for the show lldp command. Output fields are listed in the approximate order in which they appear.

Table 1: show lldp Output Fields

Field Name	Field Description	Level of Output
LLDP	The LLDP operating state. The state can be enabled or disabled.	All levels
Advertisement interval	The frequency, in seconds, with which LLDP advertisements are sent. The default value is 30 seconds.	All levels
Transmit Delay	The delay between two successive LLDP advertisements. The default value is 2 seconds.	All levels
Hold timer	The multiplier used in combination with the advertisement-intervalvalue to determine the length of time LLDP information is held before it is discarded. The default value is 4 (or 120 seconds).	All levels
LLDP Port Configuration	The LLDP port configuration: Port—The port number. LLDP—The LLDP operating state. The state can be enabled or disabled. Neighbor Count—(detail) The total number of new LLDP neighbors detected since the last system reboot.	All levels
LLDP Vlan export details	The LLDP VLAN information that is advertised: Port—The interface on which LLDP is configured. Vlan-id—The VLAN tag associated with the interface sending LLDP frames. If a port is not a member of a VLAN, the VLAN ID is advertised as 0. Vlan-name—The VLAN name associated with the VLAN ID.	detail
NotificationEnabled	The LLDP event notification information: R—Received. T—Transmitted.	detail
LLDP Basic TLVs Supported	The basic TLVs supported on the QFX Series: Chassis identifier—The MAC address associated with the local system. Port identifier—The port identification for the specified port in the local system. Port Description—The user-configured port description. The port description can be a maximum of 256 characters. System Name—The user-configured name of the local system. The system name can be a maximum of 256 characters. System Description—The system description containing information about the software and current image running on the system. This information is not configurable, but taken from the software. System Capabilities—The primary function performed by the system. The capabilities that system supports are defined; for example, bridge or router. This information is not configurable, but based on the model of the product. Management Address—The IP management address of the local system.	detail
LLDP 802.3 TLVs Supported	The 802.3 TLVs supported on the QFX Series: Power via MDI—A TLV that advertises MDI power support, PSE power pair, and power class information. MAC/PHY Configuration Status—A TLV that advertises information about the physical interface, such as autonegotiation status and support and MAU type. The information is not configurable, but based on the physical interface structure. Link Aggregation—A TLV that advertises whether the interface is aggregated, and its aggregated interface ID. Maximum Frame Size—A TLV that advertises the Maximum Transmission Unit (MTU) of the interface sending LLDP frames. Port Vlan—A TLV that advertises the VLAN name configured on the interface.	detail

Sample Output

show lldp

user@host> show lldp

LLDP                     : Enabled 
Advertisement interval   : 30 seconds
Transmit Delay           : 2 seconds
Hold timer               : 120 seconds

LLDP-MED                 : Enabled
LLDP-MED fast start count: 3

LLDP Port Configuration:
Port 		    LLDP      LLDP-MED
----		   -------   --------
All		   Enabled   Disabled
ge-0/1/0.0	Enabled   Enabled 
ge-0/1/1.0  Enabled   Enabled 
ge-0/1/2.0	Enabled   Disabled
ge-0/1/3.0	Enabled   Disabled
ge-0/1/4.0	Enabled   Disabled
ge-0/1/5.0	Enabled   Disabled
ge-0/1/5.0	Enabled   Disabled
ge-0/1/7.0	Disabled  Disabled

show lldp detail

user@switch> show lldp detail

LLDP                     : Enabled 
Advertisement interval   : 30 seconds
Transmit Delay           : 2 seconds
Hold timer               : 120 seconds

LLDP-MED                 : Enabled
LLDP-MED fast start count: 3

LLDP Port Configuration:
Port 		   LLDP      LLDP-MED    Neighbor count
----		   -------   --------    --------------
All		   Enabled   Disabled    11
ge-0/1/0.0	Enabled   Enabled     1
ge-0/1/1.0  Enabled   Enabled     2
ge-0/1/2.0	Enabled   Disabled    2
ge-0/1/3.0	Enabled   Disabled    2
ge-0/1/4.0	Enabled   Disabled    2
ge-0/1/5.0	Enabled   Disabled    1
ge-0/1/6.0	Enabled   Disabled    1
ge-0/1/7.0	Disabled  Disabled    0


LLDP Vlan export details:
Port        Vlan-id      Vlan-name
----        -------      ---------
ge-0/0/0.0  100          Voice
ge-0/0/1.0  200          Voice

NotificationEnabled: 
-------------------
R(lldpRemTablesChange),T(lldpXMEDTopologyChangeDetected)

LLDP Basic TLVs Supported:
-------------------------
Chassis identifier, Port identifier, Port Description , System Name , System Description, System Capabilities, Management Address.

LLDP 802.3 TLVs Supported:
-------------------------
Power via MDI, MAC/PHY Configuration Status, Link Aggregation, 
Maximum Frame Size, Port Vlan

Published: 2011-06-17

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Technical Documentation

Related Documentation

show lldp

Syntax

Release Information

Description

Options

Required Privilege Level

Related Documentation

List of Sample Output

Output Fields

Sample Output

Published: 2011-06-17