或者轮询操作的当前状态，还可取消操作。

Or it can poll the current state of the operation, and also cancel the operation.

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而SNMP、CLI属于主动采集，必须让采集服务器使用轮询操作来及时取得网管数据。

However, SNMP and CLI, belonging to active acquisition, must be polled regularly by polling server.

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使用 incPanelValue 作为探测机制所带来的好处是我们能够以可视化的方式看见 OpenNMS 的检测和轮询操作。

The added advantage of using the operation incPanelValue as the probing mechanism is the fact that we will be able to see the detect or poll action of OpenNMS visually.

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