VLAN Trunk on two tomato shibby routers

dodimar · Post by **dodimar** » Mon Sep 07, 2015 8:29 am

I have 2 routers with tomato shibby firmware: Asus WL520GU and Linksys E900.

Here's what I want to achieve.

Building 1 has the modem.
Provide wired and wireless network for Private network (VLAN1) and Guest network (VLAN2)

Building 2 is connected to building 1 via a Cat5e cable from building 1.
Provide wireless network for Private network (VLAN1) and Guest network (VLAN2).

One user can go to building 1 or building 2 and still remain on the same VLAN.

I was thinking this can be done via a VLAN trunk. But since I am a newbie in VLAN, I don't know what steps to take.
Can this be achieved with the hardware I have?

Thanks,

Post by **Philip** » Mon Sep 07, 2015 4:43 pm

I don't use tomato, but in general, to do VLAN trunking in tomato you have to tag multiple VLANs on a single port of the router..

So, if your Cat5e between the two buildings is connected to port 1 on each router, navigate to the "Advanced VLAN" page in tomato, check the "port 1 column" and the corresponding "Tagged" column for both VLANs. That should do it.

I don't know if you need a VLAN for your guest network at all, if you're only allowing them Internet access but no local shares.
Other than that, if the names of the Wireless SSIDs and security/passphrase is the same, one should be able to roam wirelessly between the buildings and will connect to the stronger signal.

dodimar · Post by **dodimar** » Tue Sep 08, 2015 1:12 am

That's what I also have in mind.

I am wondering though how the IP address will be assigned to each device based on the VLAN that they should belong.

Post by **Philip** » Fri Sep 11, 2015 7:25 pm

Well, IPs depend on the DHCP servers, you should have one and only one for each VLAN (it could be the modem/router or one set as an access point).