Multiple WANs what they can and cannot do.
I am posting this as I have more than a couple of times people are mistaken as to what multiple wan interfaces can and cannot do.
They can provide:
-Use for your internet connection to be able to hold more users
-Failover Redundancy….if one link dies the other can take over the load (still buggy from what I hear)
They cannot provide:
-Faster speeds, I guess this idea is spawn from shot-gunning dial-up lines years ago where you could take multiple modems and connect to the same ISP pooling the connections together forming lines which could download/upload at ISDN/DSL speeds.
This is specific to pfSense's policy routing approach.
(As discussed in Dan's Tutorial, see tutorial section)
Can's or Benefits
- Manually assign which service/server or PC goes to which ISP.
- Manual failover. (As in if one ISP fails, you manually re-assign your LAN PCs)
- Consolidate multiple routers into one box. (Save space and electricity)
- Manually distribute the users on the LAN side to available WANs.
- Simpler to implement in complex situations (especially with VPN connections, etc).
Cannot or Disadvantages
- See ZGamer's comment.