How to enable and manage Link Layer Discovery Protocol (LLDP) on Dell Networking Force10 switches

Objectives

1.  Important Points to Remember
2.  Configure LLDP
2.  View LLDP configuration
4.  View Information Advertised by Adjacent LLDP Agents

 

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Important Points to Remember

• LLDP is enabled by default starting at firmware release 9.2.0.2.  Prior versions LLDP is disabled by default.
• Dell Networking systems support up to eight neighbors per interface.
• Dell Networking systems support a maximum of 8000 total neighbors per system.  If the number of interfaces multiplied by eight exceeds the maximum, the system does not configure more than 8000.
• Interface level configurations override all configuration level configurations.

 

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Configure LLDP
 

Command	Purpose
FTOS# configure	Enter configuration mode.
FTOS(config)# protocol LLDP	Enter LLDP mode.
FTOS(config-lldp)# no disable	Disable turns off LLDP globally.  No disable turns on LLDP globally.  Since the protocol was introduced as "disabled" then the negative of that statement turns on the protocol.
FTOS(conf-if-te-0/10)#protocol lldp	The same LLDP mode is found at the interface level.  All specific interface level LLDP mode commands override any globally configured LLDP parameters.

 

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View LLDP Configuration

 

Dell(conf)#protocol lldp

Dell(conf-lldp)#show config

!

protocol lldp

advertise dot1-tlv port-protocol-vlan-id port-vlan-id

advertise dot3-tlv max-frame-size

advertise management-tlv system-capabilities system-description hello 10

no disable

Dell(conf-lldp)#

Dell(conf-lldp)#exit

Dell(conf)#interface gigabitethernet 1/31

Dell(conf-if-gi-1/31)#show config

!

interface GigabitEthernet 1/31

no ip address

switchport

no shutdown

Dell(conf-if-gi-1/31)#protocol lldp

Dell(conf-if-gi-1/31-lldp)#show config

!

protocol lldp

 

Dell(conf-if-gi-1/31-lldp)#

 

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View Information Advertised by Adjacent LLDP Agents
 

Display brief information about adjacent devices.

         show lldp neighbors.

 

Display all of the information that neighbors are advertising.

         show lldp neighbors detail

 

Example of viewing Brief Information Advertised by Neighbors

Dell(conf-if-te-0/3-lldp)#end

Dell (conf-if-te-0/3)#do show lldp neighbors

Loc      PortID      Rem Host Name        Rem Port Id                Rem Chassis Id

-------------------------------------------------------------------------------------------------------

Te 0/1                     -                     TenGigabitEthernet 0/5      00:01:e8:05:40:46

Te 0/2                     -                     TenGigabitEthernet 0/6      00:01:e8:05:40:46

Dell (conf-if-te-0/3)#

 

Example of Viewing Details Advertised by Neighbors

Dell#show lldp neighbors detail

========================================================================

Local Interface Te 0/4 has 1 neighbor

Total Frames Out: 6547

Total Frames In: 4136

Total Neighbor information Age outs: 0

Total Frames Discarded: 0

Total In Error Frames: 0

Total Unrecognized TLVs: 0

Total TLVs Discarded: 0

Next packet will be sent after 7 seconds

The neighbors are given below:

-----------------------------------------------------------------------

Remote Chassis ID Subtype: Mac address (4)

Remote Chassis ID: 00:01:e8:06:95:3e

Remote Port Subtype: Interface name (5)

Remote Port ID: TeGigabitEthernet 2/11

Local Port ID: TenGigabitEthernet 1/21

Locally assigned remote Neighbor Index: 4

Remote TTL: 120

Information valid for next 120 seconds

Time since last information change of this neighbor: 01:50:16

Remote MTU: 1554

Remote System Desc: Dell Networks Real Time Operating System Software

Dell Operating System Version: 1.0.

Dell Application Software Version: 9.4.0.0. Copyright (c) 1999-2014

Build Time: Thu Aug 9 01:05:51 PDT 1999-2014

Existing System Capabilities: Repeater Bridge Router

Enabled System Capabilities: Repeater Bridge Router

Remote Port Vlan ID: 1

Port and Protocol Vlan ID: 1, Capability: Supported, Status: Enabled

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