Redundant Internet connection with load balancing

What's the best way to set up redundant Internet connections with load balancing for a small office (80 employees)? We have a Sonicwall 2400 firewall. I assume that we need a dual WAN router. Do you have any router recommendations and tips for optimizing the router setup?
PerfishentAsked:
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James HIT DirectorCommented:
I would consider going with a link load balancer. This would provide a much easier solution and less headache.

ElFiq Networks:

http://www.elfiq.com/lbx400

Barracuda:

https://www.barracuda.com/products/linkbalancer

This is all based on throughput but this will definitely get the job done.
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PerfishentAuthor Commented:
@Spartan_1337: I forgot to mention that we have a web server on our network with multiple sites and multiple IP addresses.  We also have a continuous VPN link to a branch office. In the event that one of the Internet connections fails, will these devices still be able to route traffic to the websites and to the VPN? Thanks for your input.
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James HIT DirectorCommented:
How are you planning on failing over to the other ISP if/when the link goes down?
Unless you automated the DNS failover, your sites will go down as those IP's will not work.

The VPN link will work the same way. If this is a Site to Site (L2TP) then you will have to create a new Peer connection for the VPN to establish itself.

The LLB will not work for you with these requirements. You can configure you firewall to manage multiple ISP's by configuring the X2 port for the second ISP.  Once the IP is configured on that interface, you can then configure Failover and Network Balancing.
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PerfishentAuthor Commented:
@Spartan_1337: I think we'll ignore the impact on the internally hosted websites and the VPN. Those will be less important to our business in about 6 months as we move to more cloud-based software.

According to the following article, we can set up outbound-initiated load balancing on our existing Sonicwall 2400 firewall. That should be adequate to maintain connectivity to the hosted software we rely on.

https://support.software.dell.com/kb/sw7588

Let me know if there's anything else I should consider.
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James HIT DirectorCommented:
No, that is what I had suggested. This is the best and easiest solution for you.
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