Hi

I have 2 LANS, LAN A = 10.10.10.10/24 and LAN B = 10.20.20.20/24 (these come from my AP-900 incidentally)

I have connected LAN A to Port 1 (P1) on my Vigor 2820n router. This all works and I can connect to the internet fine when on LAN A. I have connected LAN B to Port 3 (P3) on my Vigor 2820n router and I have setup port-based VLANs on the 2820n so that P1 and P2 are on VLAN0 and P3 anfd P4 are on VLAN1. Unfortunately LAN B cannot connect to the internet, it can't get a ping reply from internet IP addresses such as www.google.co.uk (173.194.34.120)

How can I get this to work? I can see no way of setting the IP address of the router for VLAN1 to 10.20.20.1 say, all I have is the one IP address for the LAN on the router, that being 10.10.10.1, and that's visible by LAN A only, of course.

So, can I do what I want do to here with the Vigor 2820n? Or would I need to upgrade to a 2830n as that appears to have more extensive VLAN setup options. (I can't afford to upgrade atm though and would prefer to use my 2820n as it seems a waste of money to upgrade just to get the VLAN stuff working fully.)

Any suggestions?

Thanks in advance.

Is lanB set up on the AP900 as a DHCP server?
If you want to use 802.11Q then the 2820 doesn't support it - its only port based IIRC

It may work the way you have done it if the AP is the DHCP server for LANB and you set the gateway are the IP of the 2820 on LAN A

Hi,

Thanks for the reply!. LAN B on the AP-900 does have the DHCP server on the AP-900 in use, yes. And it is Port Based VLAN setup only on the 2820n, yes, no tags or such like. I've not used vlan tags on AP-900 either,

I find that if I plug my laptop into P4 on the 2820n (which is on VLAN1) that the 2820n DHCP gets in first, so I now manually set the IP of the wired laptop to 10.20.20.5. Once done I can ping 10.20.20.2 (the AP-900 LAN B) ok.
So the VLAN 10.20.20.0/24 network works to an extent, but then I guess it would as it's acting as as switch (layer 2) I guess. The problem is, neither the wired-in laptop nor the rest of LAN B can reach the internet.

It feels like an issue with the 2820n, but that said, I am not sure what to set the gateway address to for devices on LAN B. Atm it is set to the gateway IP address of my ISP, same as what the 2820m gateway is. (Previously setting the gateway to the LAN A IP address of the 2820n doesn't work as that is on the other VLAN, VLAN0, and cannot be reached from VLAN1.

Any more ideas?

Thanks