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Configuration Guide - Device Management

S2720, S5700, and S6720 V200R013C00

This document describes the configurations of Device Management, including device status query, hardware management, Stack, SVF, cloud-based management, PoE, monitoring interface, OPS, energy-saving management, information center, fault management, NTP, synchronous ethernet, PTP.

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LLDP Neighbor Change Event Subscription

LLDP Neighbor Change Event Subscription

Interface Name

LLDP neighbor change event subscription

Application Phase

Subscription phase

API Prototype

result1_value, result2_description = ops.lldp.subscribe(tag, event, interfaceName, neighborType)






Indicates conditions.

The value is a string of 1 to 12 case-insensitive characters, consists of letters, digits, and underscores (_), and starts with a letter. The value cannot be one of the following: "", None, and, or, andnot. The value cannot contain \0.


Indicates an LLDP neighbor change event.

The value is of the enumerated type:

  • ops.lldp.LLDP_NEIGHBOR_EVENT_ADD: An LLDP neighbor is added.

  • ops.lldp.LLDP_NEIGHBOR_EVENT_DEL: An LLDP neighbor is deleted.


Indicates the interface name consisting of the interface type and number.

The value is a string of characters.

  • A complete interface name (GigabitEthernet0/0/1, for example), or an abbreviation of an interface name (Gi0/0/1, for example).

  • INTERFACE_ALL: all interfaces.


Indicates the LLDP neighbor device type.

The value is of the enumerated type:

  • ops.lldp.LLDP_NEIGHBOR_TYPE_PHONE: IP phone

  • ops.lldp.LLDP_NEIGHBOR_TYPE_SWITCH: switch

  • ops.lldp.LLDP_NEIGHBOR_TYPE_ROUTER: router


  • ops.lldp.LLDP_NEIGHBOR_TYPE_OTHER: other devices

Return Value

The result1_value and result2_description in the API prototype indicate return values.

The result1_value is the first return value, 0 indicates success, and 1 indicates failure.

The result2_description is the second return value, indicating the failure cause. It is returned only when the first return value is 1.

Usage Description

If multiple simple events are defined using the ops.lldp.subscribe API in the subscription phase, but the simple events are not combined through the Multi-Condition Combination API, the Python script assistant cannot be configured.

Using the LLDP neighbor change event subscription, you can subscribe to LLDP neighbor changes on an interface.


When a new LLDP neighbor on GE0/0/1 is a switch, the corresponding action is triggered.

value, descri_str = ops.lldp.subscribe("neighbor", ops.lldp.LLDP_NEIGHBOR_EVENT_ADD, "GigabitEthernet0/0/1", ops.lldp.LLDP_NEIGHBOR_TYPE_SWITCH)
Updated: 2019-04-20

Document ID: EDOC1100065674

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