Turn off collection of port data for SNMP network devices

task australia Updated Sep 10, 2026 1 min read t_TurnOffCollectionOfPortData.md

In some environments you may not want to collect the port data for SNMP network devices.

Before you begin

Role required: admin

About this task

Network devices can contain an extremely large number of ports. If each individual port's information is not critical to the overall management of the devices, you may not want to collect the port data for SNMP network devices. This would affect records from being created in the Switchports table (dscy_switchport). This process only impacts probe discovery.

Procedure

Navigate to Discovery Definition > Probes.
Go to the SNMP - Switching probe.
In the SNMP Fields tab, find the field named ports, double-click the value in the Active column, and change the value to false.

The collection and processing of ports information for switches is then disabled. The ports field for the switch CI should have the correct ports count even though the related list switchports is empty.
Click the check mark to save the change.

Parent Topic:Network switch and router discovery

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---
title: Turn off collection of port data for SNMP network devices
description: In some environments you may not want to collect the port data for SNMP network devices.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/it-operations-management/itom-visibility/t\_TurnOffCollectionOfPortData.html
release: australia
product: ITOM Visibility
classification: itom-visibility
topic_type: task
last_updated: "2026-09-10"
reading_time_minutes: 1
breadcrumb: [Network switch and router, Network device discovery, Data collected by ITOM Visibility, ITOM Visibility reference, ITOM Visibility, IT Operations Management]
---

# Turn off collection of port data for SNMP network devices

In some environments you may not want to collect the port data for SNMP network devices.

## Before you begin

Role required: admin

## About this task

Network devices can contain an extremely large number of ports. If each individual port's information is not critical to the overall management of the devices, you may not want to collect the port data for SNMP network devices. This would affect records from being created in the Switchports table \(dscy\_switchport\). This process only impacts probe discovery.

## Procedure

1. Navigate to **Discovery Definition** &gt; **Probes**.

2. Go to the **SNMP - Switching** probe.

3. In the **SNMP Fields** tab, find the field named **ports**, double-click the value in the **Active** column, and change the value to **false**.

The collection and processing of ports information for switches is then disabled. The **ports** field for the switch CI should have the correct ports count even though the related list **switchports** is empty.

4. Click the check mark to save the change.

**Parent Topic:**[Network switch and router discovery](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-operations-management/itom-visibility/r_DataCollDiscoNWRouteAndSwitch.md)