View LLDP Neighbor Information

Display information about LLDP neighbors to help you configure LLDP for maximum benefit.

About this task

Use this procedure to display LLDP neighbor information.

Procedure

  1. Enter Privileged EXEC mode:

    enable

  2. To view LLDP neighbor information, enter:

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

Examples

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 7254XSQ) and switch B which is the proxy device is an ERS 4826GTS switch.

The following examples show neighbor discovery on non-channelized ports.

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

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

Switch:1>enable
Switch: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

The following examples show neighbor discovery on channelized ports (if your platform supports channelization).

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

Switch:1>enable
Switch: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.

Switch:1>enable
Switch: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]] [,...]}

Displays LLDP neighbor information on the specified 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.

med

Displays LLDP neighbors learned based on LLDP-MED TLV information.

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

Displays the summary of LLDP neighbors of a port or all ports on the switch.

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.
9037602-00 Rev AB