Display Learned LLDP Neighbors

Use this procedure to verify details of the LLDP neighbors learned.

Procedure

  1. Enter Privileged EXEC mode:

    enable

  2. Verify details of LLDP neighbors learned:

    show lldp neighbor

  3. Verify details of LLDP neighbors learned on a specific port:

    show lldp neighbor port {slot/port[/sub-port] [-slot/port[/sub-port]] [,...]}

Example

The following example shows how two switches—an FA Server and an FA Proxy discover each other as LLDP neighbors. Switch A, which is the FA Server is a VSP 7200 Series switch (model VSP 7254XSQ) and switch B which is the proxy device is an ERS 4826GTS switch.

The following examples shows neighbor discovery on non-channelized and channelized ports (if your platform supports channelization).

On the non-channelized port 1/1 on the FA Server, verify neighbor discovery of the proxy switch.

SwitchA:1>en
SwitchA:1#show lldp neighbor 

==========================================================================================
                                      LLDP Neighbor
==========================================================================================

Port: 1/1       Index    : 1 
                Time: 1 day(s), 04:03:52   
                ChassisId: MAC Address        70:30:18:5a:05:00
                PortId   : MAC Address        70:30:18:5a:05:07
                SysName  : 
                SysCap   : Br / Br            
                PortDescr: Port 7
                SysDescr : Ethernet Routing Switch 4826GTS HW:10 FW:5.8.0.1 SW:v6.9.2.027

------------------------------------------------------------------------------------------
Total Neighbors : 1
------------------------------------------------------------------------------------------
Capabilities Legend: (Supported/Enabled)
B= Bridge,    D= DOCSIS,    O= Other,     R= Repeater,
S= Station,   T= Telephone, W= WLAN,      r= Router
Switch:1(config)#

On the proxy switch, verify discovery of the FA Server switch.

SwitchB:1>en
SwitchB:1#show lldp neighbor
-------------------------------------------------------------------------------
                            LLDP neighbor                                      
-------------------------------------------------------------------------------
Port: 7     Index: 71
        Time: 12 days, 21:40:30         
        ChassisId: MAC address        a4:25:1b:52:70:00
        PortId:    MAC address        a4:25:1b:52:70:04
        SysName:   BEB1-7254XSQ
        SysCap:    rB / rB            (Supported/Enabled)
        PortDesc:  Virtual Services Platform 7254XSQ - Gbic1000BaseT Port
1/1
        SysDescr:  VSP-7254XSQ (6.0.0.0_GA) 
-------------------------------------------------------------------------------
Sys capability: O-Other; R-Repeater; B-Bridge; W-WLAN accesspoint; r-Router;
T-Telephone; D-DOCSIS cable device; S-Station only.
Total neighbors: 1

On the channelized port 1/1/1 on the FA Server switch, verify discovery of the proxy switch.

SwitchA:1>en
SwitchA:1#show lldp neighbor 

==========================================================================================
                                      LLDP Neighbor
==========================================================================================

Port: 1/1/1     Index    : 1
                Time: 1 day(s), 04:03:52    
                ChassisId: MAC Address        70:30:18:5a:05:00
                PortId   : MAC Address        70:30:18:5a:05:07
                SysName  : 
                SysCap   : Br / Br            
                PortDescr: Port 7
                SysDescr : FA Proxy 4826GTS HW:10 FW:5.8.0.1  SW:v5.9.2.027

------------------------------------------------------------------------------------------
Total Neighbors : 1
------------------------------------------------------------------------------------------
Capabilities Legend: (Supported/Enabled)
B= Bridge,    D= DOCSIS,    O= Other,     R= Repeater,
S= Station,   T= Telephone, W= WLAN,      r= Router
Switch:1(config)#

Verify neighbor discovery on the proxy switch.

SwitchB:1>en
SwitchB:1#show lldp neighbor
-------------------------------------------------------------------------------
                            LLDP neighbor                                      
-------------------------------------------------------------------------------
Port: 7     Index: 71
        Time: 12 days, 21:40:30         
        ChassisId: MAC address        a4:25:1b:52:70:00
        PortId:    MAC address        a4:25:1b:52:70:04
        SysName:   BEB1-7254XSQ
        SysCap:    rB / rB            (Supported/Enabled)
        PortDesc:  Virtual Services Platform 7254XSQ - 40GbCR4-Channel Port
1/1/1
        SysDescr:  VSP-7254XSQ (6.0.0.0_GA) 
-------------------------------------------------------------------------------
Sys capability: O-Other; R-Repeater; B-Bridge; W-WLAN accesspoint; r-Router;
T-Telephone; D-DOCSIS cable device; S-Station only.
Total neighbors: 1

Variable Definitions

The following table defines parameters for the show lldp neighbor command.

Variable

Value

port {slot/port[/sub-port] [-slot/port[/sub-port]] [,...]}

Identifies the slot and port in one of the following formats: a single slot and port (slot/port), a range of slots and ports (slot/port-slot/port), or a series of slots and ports (slot/port,slot/port,slot/port). If the platform supports channelization and the port is channelized, you must also specify the sub-port in the format slot/port/sub-port.

Displays LLDP neighbor information on the specified port.

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