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delke

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Hi, I'm looking to setup a new network with 3 VLANs. With 1 of those VLANS able to see both the other 2 VLANs. I'm also going to need it to be over 2 switches as the location of the computers are in different locations. What I'm looking for is a recommendation on what hardware I should buy or what I should make sure the switches/routers have. Thanks.
 

zx10guy

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Technically, if you are allowing one VLAN to "see" the other 2, the other 2 can "see" that VLAN too. The only way traffic moves in and out of a VLAN is via a layer 3 device (router). To control traffic flow between VLANs you have to either use ACLs (access control list) applied to the VLAN virtual interfaces on the layer 3 switch you'll need to use, or you'll need to insert a firewall. Adding a firewall would provide better and more secure traffic control between VLANs. But you're adding yet another network device.

How far apart are the two locations?
 

delke

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Technically, if you are allowing one VLAN to "see" the other 2, the other 2 can "see" that VLAN too. The only way traffic moves in and out of a VLAN is via a layer 3 device (router). To control traffic flow between VLANs you have to either use ACLs (access control list) applied to the VLAN virtual interfaces on the layer 3 switch you'll need to use, or you'll need to insert a firewall. Adding a firewall would provide better and more secure traffic control between VLANs. But you're adding yet another network device.

How far apart are the two locations?
Thanks for the replay, I understand that if the one VLAN can "see" the other 2, the other 2 can "see" that VLAN, but want I don't want is for the other 2 to be able to "see" each other.

The two locations are about 50 meters part from each other with one cat6 cable between them.
 

zx10guy

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Thanks for the replay, I understand that if the one VLAN can "see" the other 2, the other 2 can "see" that VLAN, but want I don't want is for the other 2 to be able to "see" each other.

The two locations are about 50 meters part from each other with one cat6 cable between them.
The same thing I said above still applies. To control network access, you have to use ACLs which is a feature of layer 3 switches or insert a firewall and use ACLs there.

Because they're only 50 meters apart, then you would use a layer 3 switch at one end and a layer 2 switch at the other. If you want to insert a firewall, then it would be a firewall and layer 2 switch at one end and a layer 2 switch at another. The layer 2 switches for both scenarios have to be managed switches.
 
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