SD-Wan question

Hello,

I am trying to research this question but not getting any concrete answers. I have multiple hub locations (none MPLS) connected to HQ via DMVPN. My bandwidth circuits at those external locations varies between 5Mb up to 100,Mb. My questions is, with SD-WAN, those sites with only 5Mb, will they see performance increase? Will I be able to manage this bandwidth? Or will I be cancelling the circuit with.. let's say Comcast and get a SD-WAN provider and thus leverage the speed? Also, if thats the case, will I be signing up for certain speed with the SD-WAN provider or no?
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Shark AttackNetwork adminAsked:
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Shark AttackNetwork adminAuthor Commented:
also, the reason why some of these locations WAN speeds are so low is because there is not much ISP providers in the area that provide anything faster the 10Mb or lower. Some of these buildings are in the middle of no where
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Mike SmithEnterprise VoIP & ISP BrokerCommented:
SD-WAN will be an add-on service, over the top of your existing Internet circuits.

Yes, SD-WAN will improve the performance of even a single circuit. An on-prem-only SD-WAN solution will improve your outbound traffic through in-the-fly prioritization. A cloud-enabled SD-WAN solution will do that, plus prioritize inbound traffic and further, will improve latency, packet loss and jitter on both outbound and inbound traffic.

A cloud enabled SD-WAN solution has a cloud gateway component, giving you a router at each end of your Internet circuit. The service performs forward error correction, jitter buffering, etc. to improve performance on even a single circuit.

Add a second Internet circuit to each site and the SD-WAN solution will aggregate both connections at all times, thus increasing your total available bandwidth, DR, and will give you an additional option in case your existing Internet connection is experiencing intermittent latency, etc.
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Shark AttackNetwork adminAuthor Commented:
Ok, Could I have different provider for internet and different provider for SD-WAN and have that work together?
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Mike SmithEnterprise VoIP & ISP BrokerCommented:
Absolutely. I recommend it.

In terms of provider selection, each offer different advantages, such as IP Addresses from their network, managed security, etc.
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Shark AttackNetwork adminAuthor Commented:
thanks, so just to clarify, if I have 5Mb connections (very slow) back to HQ, The only advantage of adding SD-WAN on top is that it will improve latency, packet loss and jitter thus increasing the speed BUT not actually increase the speed of the circuit, correct?
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Mike SmithEnterprise VoIP & ISP BrokerCommented:
Correct. It will only increase the actual bandwidth if you add a second circuit for it to load balance/aggregate.
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Shark AttackNetwork adminAuthor Commented:
thanks
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