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Making a PC a member of more than one VLAN
I'm sorry to post this here as it should go in the enterprise forums. I am considering purchase of a GP724 switch and cannot get access to these forums until I purchase. Hence my general question on v...
- Think of it this way - you have two separate networks - completely separate - separate switches, separate servers, separate clients - two physically separate LANs.
Now put them on a single switch, separated logically into two virtual LANs - or VLANs.
If you need to communicate between the physically separate LANs, you need to link them with a router, with each LAN being connected to a different interface.
If you need to communicate between your two virtual LANs you need to link them with a router, either one with physically separate interfaces, or one that supports VLANs - this router can also be a "route switch", or layer 3 switch.
It's quite unusual to have a client system connected to two VLANs simultaneously, the norm would be to have it on one VLAN and access the other VLAN through the router linking the two - it is however possible to have a server connected that way, especially if you're running virtualization on that server.
You could configure a switch port as a trunk port or tagged port so that it passes the VLAN tags, but if the PC does not know how/what to do with the VLAN tags, it won't work.
I've merged your threads - to make it easier to keep track of.
Go look at my first reply - the idea of a VLAN is to separate the traffic - if you want the router to be connected to two VLANs (plus the internet), it must either have a minimum of three interfaces (WAN, LAN1 & LAN2) - or - it must support VLANs.
You said your Draytek allowed each of the four switch ports to a separate VLAN, the easy way is to connect the VLANs on the switch to the VLANs on the router with a separate cable.
The other way is to use what is known a trunked VLAN in which you configure one port on the switch to be a trunk (which by definition will pass traffic from all VLANs) to the Draytek, but the Draytek must be able to support "trunked" VLANs - this will allow a single cable to connect the two.
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