pvid

Question

what s pvid? when editing port settings and associating a port with a vlan do you need to change pvid to match the vlan number?

DELL-Willy M · Answer

Here is an section from page 595 of this user guide:

VLAN Tagging

PowerConnect 7000 Series switches support IEEE 802.1Q tagging. Ethernet

frames on a tagged VLAN have a 4-byte VLAN tag in the header. VLAN

tagging is required when a VLAN spans multiple switches, which is why trunk

ports transmit and receive only tagged frames.

Tagging may be required when a single port supports multiple devices that are

members of different VLANs. For example, a single port might be connected

to an IP phone, a PC, and a printer (the PC and printer are connected via

ports on the IP phone). IP phones are typically configured to use a tagged

VLAN for voice traffic, while the PC and printers typically use the untagged

VLAN.

When a port is added to a VLAN as an untagged member, untagged packets

entering the switch are tagged with the PVID (also called the native VLAN)

of the port. If the port is added to a VLAN as an untagged member, the port

does not add a tag to a packet in that VLAN when it exits the port.

Configuring the PVID for an interface is useful when untagged and tagged

packets will be sent and received on that port and a device connected to the

interface does not support VLAN tagging.

vlan-id — PVID. The VLAN ID may not belong to a VLAN that does not exist on the switch. (Range: 1–4093)

Hope this information is useful.

Networking General