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Managed Switch with VLANs to Unmanaged Switch - Will it replicate the ports assigned VLAN? (alien.top)

submitted 2 years ago by Financial-Sleep-8468@alien.top to c/homelab@selfhosted.forum

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Hi Reddit Folks!

This is a noobish question but what would happen a Tagged Port on a managed switch when a cable is connect from it to a port on an unmanaged switch?

Would it replicate the VLAN Tag, revert back to VLAN 1, or do nothing?

Just curious if it would extend that VLAN to all of the ports on the unmanaged switch.

Thanks for your time and help!

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[–] mlfh@lemmy.ml 1 points 2 years ago* (last edited 2 years ago)

Setting the managed switch port to untagged with a PVID of the desired VLAN will effectively extend that VLAN to all of the ports on the unmanaged switch. Your managed switch will "see" the multiple networks, and treat anything in and out of that port as part of that specific VLAN, and everything on the other side of that cable will only "see" a single normal layer 2 network.

Any VLAN tags will be ignored (and probably stripped) by the unmanaged switch.