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Copy file name to clipboardExpand all lines: articles/defender-for-iot/organizations/how-to-enhance-port-and-vlan-name-resolution.md
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Enrich device resolution by customizing port and VLAN names on your sensors.
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For example, you might assign a name to a non-reserved port because that port shows unusually high activity. Similarly, you might assign a name to a VLAN number for better visibility in the device inventory reports.
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## Prerequisites
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To customize port and VLAN names, you must be able to access the sensor as an **Admin** user.
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Enrich device inventory data with device VLAN numbers and names.
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VLANS are either discovered automatically by the sensor or added manually. When you add a manual VLAN, you must add a unique name. Once named, the name of the VLAN will appear in reports instead of the VLAN number.
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VLANS are either discovered automatically by the sensor or added manually. Automatically discovered VLANs can't be edited or deleted, but manually added VLANs require a unique name. If not named, the number of the VLAN will appear in the reports instead.
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Before you start, note that:
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VLANs support is based on 802.1q (up to VLAN ID 4094).
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- Manual VLANs can be edited and deleted, but automatically discovered VLANs can’t.
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- VLAN names aren't synchronized between the sensor and the management console. You need to define the name on the management console as well.
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- VLANs support is based on 802.1q (up to VLAN ID 4094).
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> [!NOTE]
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> VLAN names aren't synchronized between the sensor and the management console. You need to define the name on the management console as well.
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**To configure VLAN names:**
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1. In **VLAN naming** pane, select **Add VLAN**.
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1. Add a VLAN ID and unique VLAN name. For example:
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1. Add a VLAN ID and unique VLAN name. VLAN names can contain up to 50 ASCII characters. For example:
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:::image type="content" source="media/how-to-enrich-asset-information/edit-vlan.png" alt-text="Screenshot of the VLAN naming pane." lightbox="media/how-to-enrich-asset-information/edit-vlan.png":::
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1. Select **Save**.
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**For Cisco switches:**
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Add the following line to the span configuration: `monitor session 1 destination interface XX/XX encapsulation dot1q`.
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In that command, *XX/XX* is the name and number of the port.
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Add the `monitor session 1 destination interface XX/XX encapsulation dot1q` command to the span configuration, where *XX/XX* is the name and number of the port.
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