LLDP

LLDP (Link Layer Discovery Protocol) is an IEEE 802.1AB standard protocol that enables network devices to advertise and discover information about their directly connected neighbors, providing vendor-neutral network topology discovery capabilities. It periodically transmits Type-Length-Value (TLV) formatted messages containing device identification, capabilities, management addresses, port descriptions, and system information to facilitate network mapping and troubleshooting. LLDP operates independently of network layer protocols and supports both IPv4 and IPv6 management addresses, making it essential for network documentation, asset management, and automated network discovery tools.

Diagram

Classes

configuration (iosxe.devices)

Name	Type	Constraint	Mandatory	Default Value
lldp	Class	`[lldp]`	No

lldp (iosxe.devices.configuration)

Name	Type	Constraint	Mandatory
run	Boolean	`true`, `false`	No
holdtime	Integer	min: `0`, max: `65535`	No
timer	Integer	min: `5`, max: `65534`	No
ipv4_management_addresses	List	IP	No
ipv6_management_addresses	List	IP	No
management_vlan	Integer	min: `1`, max: `4095`	No
system_names	List	`[system_names]`	No

system_names (iosxe.devices.configuration.lldp)

Name	Type	Constraint	Mandatory	Default Value
switch_id	Integer	min: `0`, max: `17`	Yes
name	String		No

Examples

iosxe:
  devices:
    - name: Device1
      configuration:
        lldp:
          run: true
          holdtime: 120
          timer: 30
          ipv4_management_addresses:
            - 192.168.1.10
            - 10.0.0.1
          ipv6_management_addresses:
            - 2001:db8::1
            - fe80::1
          management_vlan: 100
          system_names:
            - switch_id: 1
              name: Switch-1-Stack-Member
            - switch_id: 2
              name: Switch-2-Stack-Member