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Trunked ports (alien.top)

submitted 11 months ago by [email protected] to c/[email protected]

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so I have two internet connections connected to a muti wan router, then I configure the two seperate vlans for both connections, then I setup 1 dhcp server for both connections then on the switch I add the vlan ids 60 and 61 made the switch port a trunk port.

So on this edge max tough switch it has the management port showing as tagged and the rest of the ports untagged. So I added the vlan ids for both connections. So I tag both vlans 60 and 61 under the same port for the trunk. So should all the ports on 60 and 61 vlan be untagged? This is where I’m getting confused!

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[–] [email protected] 1 points 11 months ago

A switch port port can support the following:

1 or more Tagged VLANS

1 Untagged VLAN by itself

1 Untagged VLAN plus one or more Tagged VLANs

A switch port CANNOT support more than one Untagged VLAN.

In all of your pictures, port 4 is correct.

In the 2nd picture - you'll note that the VLAN60 and 61 boxes are red. That's because you've selected Untagged VLAN60 and Untagged VLAN61 on ports 1, 2, 3, and 5. That isn't a valid configuration.

Your first picture has VLAN60 set for untagged traffic on ports 1, 2, 3, and 5. . . anything plugged in to those ports would be dumped onto VLAN60 during normal operation.

If you want VLAN61 as untagged on ports 1, 2, 3, and 5, you'd change the VLAN60 entries on ports 1,2, 3, and 5 to "E", and then in the VLAN61 row, change 1, 2, 3, and 5 to "U".

So, top row correct for VLAN60, middle row completely invalid, and bottom row won't put any VLANs on ports 1, 2, 3, and 5.