Getting USG to work with Sonicwall

I have been replacing antiquated equipment with unifi APs and switches.  I have a sonicwall that breaks my feed into 2 subnets.  One of them is content filtered for a school and the other is for church offices.  I would like to install a USG for the latency and throughput info, but can't seem to figure out how to get it to work without it interfering with SW or APs.  

Is there a way to do it?  I can buy another so that each subnet can have its own.  What I can't do is get rid of sonicwall or two distinct subnets as the school has to have the content filter and USG doesn't have enough of that capability.

I have changed IP and tried it on both subnets.  I have tried it before the SW and after.  I have adopted it, and it brings everything down.  I have adopted it and get caught in a provisioning loop.  It know shows managed by another device.

PS not an IT prefessional, doing this to save my school money and getting them the best technology possible!  So small words and simple answers please.  I have putty, but need step by step help
Pat O'BrienPastorAsked:
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Blue Street TechLast KnightCommented:
Hi pat8635,

To my knowledge the USG is a firewall replacement, so the answer would be "no", unless you replace the SonicWALL, which I wouldn't recommend.

Tell me more about the reason you want to install the USG...then maybe we can determine a solution for your need.
Pat O'BrienPastorAuthor Commented:
I am trying to get latency and throughput information.  I would think that I can get that from SW, but have yet to find it in an easy to interpret way.

Blue Street TechLast KnightCommented:
Are you current with your SonicWALL SonicOS General Release (login the SonicWALL & go to System > Status then look at the Firmware Version)? Copy/paste what is there so I can see which version you are on.

You should be able to get throughput from Dashboard > Real-Time Monitor. When you navigate there look at the second graph down Ingress (entering bandwidth) & Egress (exiting bandwidth). This is as the monitor suggests, in real-time.

If you want to increase throughput and decrease latency you should configure your MTU. Here is an article on how to do so:

Additionally, in the Network > Interfaces for the WAN Interface on the Advanced tab you should make sure to enable Fragment non-VPN outbound packets larger than this Interface's MTU and disable Ignore Don't Fragment (DF) Bit.

As far as latency...I'm not sure there is a way to do that graph that because there are so many connections...latency is equated on a per connection basis.

Let me know if you have any other questions, but I believe I answered your original one...the USG is a substitute for the SonicWALL so the answer is "no", but outside of latency graphs it is a far better security appliance that will better protect your environment than the USG.

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Pat O'BrienPastorAuthor Commented:
Thanks, saved me a ton of grief
Blue Street TechLast KnightCommented:
Awesome...glad I could help and thanks for the points!
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