Direction on how to use two internet to 1 router for bandwidth boosting

Hi.. I have a client (school) that has two internet connections (from ISP) and currently using 2 separate routers (2 separate networks).  What would be the best way to combine these two internet connections into a single router making 1 network with the benefit of a larger bandwidth (with the combined internet connections)? - I'm probably using very basic wording, but hopefully you'll get the idea.  I currently have 2 Ubiquiti Edge Router Lite (v3) routers (one on each network). - Thanks - Bill
William LarkinAsked:
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Fred MarshallPrincipalCommented:
You could use a dual-wan router like a Cisco Small Business RV042.  They are inexpensive as such things go ($150).
You would set it up in Load Balancing mode.
You might want to assign some protocols to a single WAN interface - this can be done.
David Johnson, CD, MVPOwnerCommented:
Basically you can't increase the speed but what you can do is split the workload. The usual method is round-robin load balancing. You may also want to route traffic by type so the most important traffic goes to a dedicated route, the remainder goes to the alternate route.
Fred MarshallPrincipalCommented:
I don't understand why you would not be able to increase the speed unless there are constraints that you haven't mentioned.  
- If you have more than one public IP address that is served on a single pipe then that would likely be the case.  But you didn't say that (yet).
- If your router is somehow slower than either of the ISP feeds then it would be the bottleneck and you wouldn't be able to do better.  But that's not likely the case.
- If you have two separate ADSL connections then you should be able to aggregate the bandwidth.
- etc.
As before, you may not want to increase the speed by sharing two pipes if certain protocols are in effect.  https could be an example.

We would likely make more progress if you were to tell us the type of connections you have.
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William LarkinAuthor Commented:
Thanks for your comments.. The connections are Verizon FIOS 75/75. There are approx 250 devices (and Growing) variety of byod (iPad, smartphones, etc)
Rakesh Madupu JNCIE-SP #02079 CCIE-SP#47613Network Development EngineerCommented:
Hi Fred,

I am not sure if you are running BGP to do something called Multipath or selective Path forwarding based on attributes. As some else pointed out rightly you cannot combine the aggregate bandwidth the reason being they are two seperate Layer-3 UpLinks. You could have combined if Both the links were running a single-IP by which you could have done ETHERCHANNEL/aggregated-EThernet to your upstream.

My advise Identify if there are any specific destinations that your customer would like to access.For an example Yahoo and Google, Point Google Via #1 isp and Point Yahoo via #2 isp via static routing and others will anyways be pointed to Default Routing

Fred MarshallPrincipalCommented:
I am confused by buzzwords and often wonder if there's any meaning when bunches of them are combined....  Anyway, it's Bill who asked for help.

Load balancing does appear to work or I wouldn't imagine that Cisco would be selling it.
William LarkinAuthor Commented:
Again.. thanks for your comments..  I didn't say that I was wanting to increase the "speed", but to increase the bandwidth.. in my thought it was.. I have 2 separate channels to the internet available, both at 75m down/up..  so if I can combine them, maybe I would get 150m :)  I'm sure that this isn't the case, but I have read where you could use MIMO or the sorts to increase the overall performance of your network as related to internet access. One of our connections has a dedicated IP address, the other is dynamic (but could easily be changed $$)..  we currently do not have any type of services (in our out) that would cause any type of real overhead.  If there is not benefit to using both of these internet pipes.. then I would probably just eliminate one of the connections and go with one.. which should be fine for what we need at the school.  I was just looking for a "reason" to keep the second line. Thanks - Bill
Fred MarshallPrincipalCommented:
You can look at the Cisco RV315W which has Gigabit ports.  The pertinent controls are associated with the Dual WAN configuration.  It can either be in failover mode or in Load Balancing mode.  

With Gbps ports you should be able to make use of all the bandwidth available on the WAN ports combined (150Mbps per your description).

Often we say "speed" in place of "bandwidth". Double the bandwidth from end-to-end and cut the time in half for a given sized transfer - thus "speed".

What you can't likely do is to increase the bandwidth/speed from a *single source* but you should surely be able (in theory at least) to get up to 75Mbps from one source (or a set of sources) and 75 Mbps from another source (or set of sources).  That adds up to 150Mbps.  Achieving this in practice is another matter but the underlying pieces necessary for the router's role are there in the router.

Static IP or dynamic IP makes no difference.

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William LarkinAuthor Commented:
Thank you for your responses.. I have enough information to proceed.  I will keep the second line and look at changing my router to support the load balancing / failover scenarios.
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