Configure an alternate port for vCenter

---
title: Configure an alternate port for vCenter
description: Specify an alternate port for the VMware - vCenter datacenters probe.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/it-operations-management/discovery/t\_ConfigureAlternatePortForVCenter.html
release: australia
product: Discovery
classification: discovery
topic_type: task
last_updated: "2026-09-10"
reading_time_minutes: 1
keywords: [Configure vCenter, configure port vCenter]
breadcrumb: [Configure for VMware Discovery, Configuring Discovery, Discovery, ITOM Visibility, IT Operations Management]
---

# Configure an alternate port for vCenter

Specify an alternate port for the VMware - vCenter datacenters probe.

## Before you begin

Role required: Discovery admin or VMware admin responsible for vCenter and ESXi hosts

## About this task

To establish proper connectivity for Discovery to vCenter, alternate ports are required if default ports are unavailable or customized.

By default, vCenter discovery initiates on these ports:

-   **vmapp6\_https**: 9443
-   **vmapp\_https**: 5480

When these ports are detected, the VMWare - vCenter datacenters probe is triggered.

## Procedure

1.  Hard code the port from your ServiceNow instance.

    1.  Navigate to **All** > **Configuration** > **VMware** > **vCenter**.

    2.  Select the specific instance from the list of instances.

    3.  Edit the **URL** field and include the port.

        For example, `https://10.0.0.1:444`

    4.  Select **Update**.

2.  Specify an alternate port number for vCenter in the VMWare - vCenter datacenters probe.

    1.  Navigate to **All** > **Discovery Definition** > **Probes**.

    2.  Open the VMware - vCenter Datacenters probe record.

    3.  In the Probe Parameters related list, select **New**.

    4.  In the **Name** field of the Probe parameter record, enter `vcenter_port`.

    5.  In the **Value** field, enter your alternate port number.

    6.  Select **Submit**.

3.  Activate the VMWare - vCenter Classify probe.

    **Important:** This configuration is only required when vCenter is on port 443.

    1.  Navigate to **All** > **Discovery Definition** > **Port Probes**.

    2.  Open the http port probe record.

    3.  In the Trigger Probes related list, select the **false** link for the VMWare - vCenter Classify classification probe.

    4.  Select the **Active** check box.

    5.  Select **Update**.

        The VMWare - vCenter Classify probe establishes a connection between the MID Server and the vCenter instance. If the connection is successful, it triggers the VMWare - vCenter datacenters probe.