"Advanced Engineering Certification - Wired Module 14": Multiple VLAN untagged???

rhagen wrote:

From what I understand,
* every port can sensefully only have one VLAN untagged, the rest has to be tagged, as untagged denotes the direct VLAN untagged packets can be sent to.

Hallo Rolf,

Perfecly correct.

rhagen wrote:

* "General" mode is kind of an "Auto" mode where the port itself decides whether it should act "Access" or "Trunked", so if I configure a port, I understand it that this configuration should work either in "Access" or in "Trunked, whichever is the actual mode I am working in?

Take the predefined modes as "macros" for programming the switch ASIC.

From the good old RT*M:

---------

In the Switchport Mode list, select one of the following:

• Access. This mode is suitable for ports connected to end stations or end users. Access ports participate in only one VLAN. They accept both tagged and untagged packets, but always transmit untagged packets.
• Trunk. This mode is intended for ports that are connected to other switches. Trunk ports can participate in multiple VLANs and accept both tagged and untagged packets.
• General. This mode enables custom configuration of a port. You configure the general port VLAN attributes, such as membership, PVID, tagging, ingress filter, and so on, using the settings on the Port Configuration page. By default, all ports are initially configured in General mode.
• Host. This mode is used for private VLAN configuration.
• Promiscuous. This mode is used for private VLAN configuration.

----------

rhagen wrote:

However, regardless, I could replicate the behaviour of the switch in the tutorial video;

Have to look-up that video again - so not sure what behaviour they what they want to show or proof there.

Please try to explain in a few words here.

Kind of an assymetric VLAN config probably?

rhagen wrote:

and to me, there still is no sense in multiple VLAN being "untagged" for a single port.

Same for me. Can only suggest to stay far away from such configs - unless there is a specific, documented use case.

rhagen wrote:

Thanks, and greetings from the Franco-German borderlands,

Grüsse aus der Schweiz 

-Kurt