Multi-WAN - Add NIC or use VLANs?
I have a multi-wan setup on an older Dell PowerEdge 2650 Server. Currently, the server has 3 NICs. 1 LAN, 1 WAN to a 40M Fiber connection, and 1 WAN to a 10M DSL connection for failover.
I'm building a new Dell PowerEdge R410 server that has 2 internal Gigabit NICs. I'm wondering if it would be better to purchase an additional PCI-E NIC for the 2nd WAN connection or if I would be just as well to create VLANs for the 2 WAN connections?
Any opinions would be greatly appreciated!
if you are using VLANs und WAN site than you need a VLAN capable switch to which you can connect your ISP's modems.
---switch----tagged VID10+20 ---- pfsense------LAN
If I think about the costs it would be perhaps better to use a dual port or quad port NIC for "less" WAN connections and if you are using more than 4 WAN than it would be perhaps cheaper to use a VLAN capable switch and one NIC.
But if you are using one NIC for many WANs than you should use a good intel server NIC to handle th sum of bandwidth of all you WANs.
I should have mentioned that we already have a good HP VLAN capable switch that I can use. Regarding the bandwidth, I figured I would be OK since the sum of the 2 WANs is 50M (I wouldn't be using the DSL either except for failover events). The built-in broadcom NICs are gigabit. Even though I will be plugging it into a 100M port on the HP Switch, I still have headroom for bandwidth.
I think this should work and perform well.
I would go with vlans and not bother with another NIC.