LLDP

LLDP View

Table 1 LLDP View

Command	Purpose
show lldp neighbor {summary\|interface interface_name}	Display LLDP neighbors.
showlldp local {summary\|interface interface_name}	Display LLDP configuration.

show lldp neighbor {summary|interface interface_name}

[Command]

show lldp neighbor {summary|interface interface_name}

[Purpose]

Display LLDP neighbors.

[Parameters]

Parameter	Description
interface_name	Interface name (eg.0/1)

[View]

Privileged User View

[Use Cases]

sonic# show lldp neighbor summary
Capability codes: (R) Router, (B) Bridge, (O) Other
LocalPort    RemoteDevice    RemotePortID    Capability    RemotePortDescr
-----------  --------------  --------------  ------------  -----------------
0/48         spine-228       C1              BR            Ethernet0
0/60         sonic       C6              BR            Ethernet68
0/72         sonic-102       C7              BR            0/72
--------------------------------------------------
Total entries displayed:  3
sonic# show lldp neighbor interface 0/48
-------------------------------------------------------------------------------
LLDP neighbors:
-------------------------------------------------------------------------------
Interface:    0/48      , via: LLDP, RID: 1, Time: 1 day, 08:51:31
  Chassis:
    ChassisID:    mac 18:17:25:37:65:40
    SysName:      spine-228
    SysDescr:     Debian GNU/Linux 9 (stretch) Linux 4.9.0-14-2-amd64 #1 SMP Debian 4.9.246-2 (2020-12-17) x86_64
    MgmtIP:       10.250.0.228
    MgmtIface:    2
    Capability:   Bridge, on
    Capability:   Router, on
    Capability:   Wlan, off
    Capability:   Station, off
  Port:
    PortID:       local C1
    PortDescr:    0/0
    TTL:          120
-------------------------------------------------------------------------------

show lldp local {summary|interface interface_name}

[Command]

show lldp local {summary|interface interface_name}

[Purpose]

Display LLDP configuration.

[Parameters]

Parameter	Description
interface_name	Interface name (eg.0/1)

[View]

Privileged User View

[Use Cases]

sonic# show lldp local summary
-------------------------------------------------------------------------------
Global configuration:
-------------------------------------------------------------------------------
Configuration:
  Transmit delay: 30
  Transmit delay in milliseconds: 30000
  Transmit hold: 4
  Maximum number of neighbors: 32
  Receive mode: no
  Pattern for management addresses: 10.250.0.171
  Interface pattern: Ethernet*,eth0
  Permanent interface pattern: (none)
  Interface pattern for chassis ID: eth0
  Override chassis ID with: (none)
  Override description with: SONiC Software Version: SONiC.V3.1R0406P01T08 - HwSku: CX532P-N - Distribution: Debian 11.10 - Kernel: 5.10.0-8-2-amd64
  Override platform with: Linux
  Override system name with: sonic
  Advertise version: yes
  Update interface descriptions: no
  Promiscuous mode on managed interfaces: no
  Disable LLDP-MED inventory: yes
  LLDP-MED fast start mechanism: yes
  LLDP-MED fast start interval: 1
  Source MAC for LLDP frames on bond slaves: local
  Port ID TLV subtype for LLDP frames: unknown
  Agent type:   unknown
-------------------------------------------------------------------------------
sonic# show lldp local interface 0/4
-------------------------------------------------------------------------------
LLDP interfaces:
-------------------------------------------------------------------------------
Interface:    Ethernet4, via: LLDP, Time: 0 day, 09:11:32
  Chassis:
    ChassisID:    mac 74:fe:48:7b:23:1a
    SysName:      sonic
    SysDescr:     SONiC Software Version: SONiC.V3.1R0406P01T08 - HwSku: CX532P-N - Distribution: Debian 11.10 - Kernel: 5.10.0-8-2-amd64
    MgmtIP:       10.250.0.171
    MgmtIface:    2
    Capability:   Bridge, on
    Capability:   Router, on
    Capability:   Wlan, off
    Capability:   Station, off
  Port:
    PortID:       local C2
    PortDescr:    Ethernet4
  TTL:          120
-------------------------------------------------------------------------------

LLDP Config

Table 2 LLDP Config

Command	Purpose
lldp{enable\|disable}	Enable or disable LLDP globally.
lldp message-transmission interval interval-time	Set the LLDP message sending interval.
lldp message-transmission hold hold-multiplier	Set the multiplier for LLDP messages hold time in neighboring devices.
lldp port-id-subtype {local\|mac-addreess\|ifname}	Set the subtype in LLDP messages.
lldp management-address-advertisements enable	Advertise the management IP address in LLDP messages.
lldp capabilities-advertisements enable	Advertise the features supported and enabled by the device in the LLDP message
lldp admin-status {tx\|rx\|txrx\|disable}	Set the operating mode of LLDP for the interface as send-only/receive-only/send and receive/ not send and receive.

lldp {enable|disable}

[Command]

lldp {enable|disable}

[Purpose]

Enable or disable LLDP globally.

[View]

Global Configuration View

[Use Cases]

sonic(config)# lldp enable

lldp message-transmission interval interval-time

[Command]

lldp message-transmission interval interval-time

[Function]

Set the LLDP message sending interval.

[Parameters]

Parameter	Description
interval-time	Interval time, range 1-3600

[View]

Global Configuration View

[Use Cases]

sonic# configure terminal
sonic(config)# lldp message-transmission interval 10

lldp message-transmission hold hold-multiplier

[Command]

lldp message-transmission hold hold-multiplier

[Function]

Set the multiplier for LLDP messages hold time in neighboring devices.

[Parameters]

Parameter	Description
hold-multiplier	Multiplier of hold time, range 1-100

[View]

Global Configuration View

[Notes]

Calculation formula for multiplier of LLDP message hold time: TTL = Min (65535, (interval × hold))

[Use Cases]

sonic# configure terminal
sonic(config)# lldp message-transmission hold 10

lldp port-id-subtype {local|mac-addreess|ifname}

[Command]

lldp port-id-subtype {local|mac-addreess|ifname}

[Function]

Set the subtype in LLDP messages.

[View]

Global Configuration View

[Use Cases]

sonic# configure terminal
sonic(config)# lldp port-id-subtype local

lldp management-address-advertisements enable

[Command]

lldp management-address-advertisements enable

[Function]

Advertise the management IP address in LLDP messages.

[View]

Global Configuration View

[Notes]

The default configuration is to enable management IP address advertisement. Run command no lldp management-address-advertisements enable command to disable the advertisement of management IP address in LLDP messages.

[Use Cases]

sonic# configure terminal
sonic(config)# lldp management-address-advertisements enable

lldp capabilities-advertisements enable

[Command]

lldp capabilities-advertisements enable

[Function]

Advertise the features supported and enabled by the device in the LLDP message

[View]

Global Configuration View

[Notes]

The default configuration is to enable LLDP capabilities-advertisements Run command no lldp capabilities-advertisements enable to disable LLDP capabilities-advertisements.

[Use Cases]

sonic# configure terminal
sonic(config)# lldp capabilities-advertisements enable

lldp admin-status {tx|rx|txrx|disable}

[Command]

lldp admin-status {tx|rx|txrx|disable}

[Purpose]

Set the operating mode of LLDP for the interface as send-only/receive-only/send and receive/not send and receive.

[View]

Physical Interface Configuration View

[Notes]

The default mode is txrx.

[Use Cases]

sonic(config)# interface ethernet 0/0
sonic(config-if-0/0)# lldp admin-status rx