Here's a new question I've never been able to answer.
I'm trying to build a multi-WAN Linux router. Normally, I have four WAN ports:
WAN1: Cable modem (fast link) WAN2: DSL line (slow link) WAN3: Public WiFi WAN4: DMZ Servers LAN1: Connection to Internal network
The box has a built-in GigE connection for the LAN side, and since all four of the WAN connections are less than 100Mb (typically less than
10), my first thought would be to find a 4-port PCI Ethernet card. These are, however, very hard to find.
I could also uise a few NAT routers, but this could be quite complicated.
Finally, I could do something like this:
- Get a VLAN-aware switch
- WAN gets VLAN tagged with four tags (WAN1, WAN2, WAN3, and WAN4)
- LAN stays as in example 1
- I plug all of the WAN links into the switch and do port tagging for each one.
Which one would people do?