DrayTek and Netgear Managed Switch

Yes you are correct it is a switch issue and again correct data is not passing through at all really.

I have double checked all the switch and firewall settings about 5 times now.

No it does not do NAT.

And the switch is in Switch mode and not relay.

You cannot set a Vlan to use a certain IP or Range.

Basically a Vlan is a group where you can select what computers / ports can see each other.

So in my case I use them as I don't want Company A seeing Company B on the network and accessing files :).

D3LL said:

You cannot set a Vlan to use a certain IP or Range.

This is sort of correct. The VLAN interface is configured with an address and subnet mask on the switch that it is originating from. (which would be the default gateway)

Are you sure that your switches are stacked / trunked correctly and the VLANs are allowed to traverse all of them? Have you tried testing multiple ports across different switches in this configuration to see if it affects them all? Do you have any static routes on the switches?

Any way you could post some configuration of these switches / is there any command-line config?

Hi there,

Yes I am very sure the switches are stacked correctly & Yes the vlans can pass through all the switches. There are a few static routes by not many.

What sort of configuration do you want lol? No command-line config

Well, that is exactly what makes Cisco superior to Netgear when it comes to corporate networking. Each interface on the switches has a specific set of parameters that you define and can read that could point to the problem. If you're solely reliant on Netgear's GUI, that makes it much more difficult to diagnose I'm afraid.

Do you have the default gateway on the switches set to the firewall?