Interfaces and Hardware Component Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

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Interfaces and Hardware Component Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

Disable transmission of optional LLDP TLVs

Updated: July 31, 2026

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This topic describes how to suppress transmission of certain optional LLDP TLVs.

Certain TLVs are classified as mandatory in LLDP packets, such as the Chassis ID, Port ID, and Time to Live (TTL) TLVs. These TLVs must be present in every LLDP packet. You can suppress transmission of certain other optional TLVs in LLDP packets.

To disable transmission of optional LLDP TLVs, complete the following steps:

Procedure

1.

Enter global configuration mode.

Example:

Router# configure
2.

(Optional)Use lldp tlv-select tlv-name disable to specify that transmission of the selected TLV in LLDP packets is disabled.

Example:

Router(config)# lldp tlv-select system-capabilities disable

The tlv-name can be one of the following LLDP TLV types:

  • management-address

  • port-description

  • system-capabilities

  • system-description

  • system-name

3.

Save the configuration changes.

Example:

Router(config)# end

or

Router(config)# commit

  • When you issue the end command, the system prompts you to commit changes:

    Uncommitted changes found, commit them before exiting(yes/no/cancel)?
[cancel]:

  • Entering yes saves configuration changes to the running configuration file, exits the configuration session, and returns the router to EXEC mode.

  • Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes.

  • Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes.

  • Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session.