Windows 10 network discovery impact on a LAN

Hi - If we have 100 Windows 10 computers in an office, all with network discovery turned on, does this impact the network bandwidth significantly, and slow the LAN down? We have approximately 12 10/100 Cisco switches in place. I would think that these same computers downloading windows updates would impact the network more. Any information would be greatly appreciated.
hodgemAsked:
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AlanConsultantCommented:
I cannot offer any quantification, but in my experience, network discovery has never had any noticeable impact on a LAN.

I would have to guess that it is swamped by other stuff going on.


Alan.
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JohnBusiness Consultant (Owner)Commented:
No. Network Discovery is mostly a permission setting and it does not have any impact on performance. The very same setting is on Windows 7 and 8 machines and did not affect performance on those machines.
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hodgemAuthor Commented:
It’s not necessarily the computer performance I was concerned about, but more the local area network impact of all of these machines constantly checking for network printers/devices etc.
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JohnBusiness Consultant (Owner)Commented:
We do not see any degradation (and as noted, the same structure for Windows 7, 8 and 10, so for near a decade).

You need this enable for another computer to find you. That does not drag down the LAN.
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hodgemAuthor Commented:
I'm sorry, what I meant was, having the setting enabled on each computer, in control panel/network and sharing center/advanced sharing/network discovery,  to "Turn on automatic setup of network connected devices" - this is what I mean, sorry for the confusion.
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JohnBusiness Consultant (Owner)Commented:
Every computer in a network should have this setting enabled for computers / servers to find each other. It is also important in a Workgroup for computer A to map a folder on Computer B.
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hodgemAuthor Commented:
I agree, but was mostly concerned with the potential LAN bandwidth usage of all of these 100 plus machines constantly "hunting" the LAN to automatically install shared network printers.
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JohnBusiness Consultant (Owner)Commented:
There is not a lot of activity there. In Windows 10 for Printer Discovery, you can turn this OFF and leave Network Discovery running.
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Cliff GaliherCommented:
I disagree actually. Network discovery is a broadcast protocol, so each additional machine in a broadcast domain causes exponential increases j  discovery traffic. At a certain size, it definitely makes sense to have network discovery disabled on clients and rely on more targeted resource location methods. Same logic as replacing netbios with DNS, and so on.
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AlanConsultantCommented:
Actually, I think Cliff is right.

Not something I have ever noticed being an issue (as I said right up front), but from a technical perspective, I think that is correct.


Alan.
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hodgemAuthor Commented:
Ok, thank you for your info. So with this turned on, you believe that this significantly degrade a 10/100 LAN?
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AlanConsultantCommented:
No, I would not expect it to 'significantly degrade' your LAN, but that is just from my experience.

The only way to really know would be to run with it on and off for, say, a week each, and see if anyone (who does not know what you are doing) actually says anything (filtering out the normal level of chatter / winging that you might get).


I would be interested to know the results!

Alan.
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Cliff GaliherCommented:
It's tough to say. One person's definition if "significant" is different than anothers. It isn't gigabit and that's working against you. A fairly standard practice dating back decades is to not have more that as hundred or so devicee in a single broadcast domain (which is why you see VLANs on larger networks) so that's working against you.  Network discovery is an aging protocol so that's working against you.

Is the impact measurable? Yes. Is that "degradation" though? That very much depends in the rest of the network and load. A busy freeway can handle a lot of cars. A narrow road with a ton of traffic lights can't. Same number of cars, but one is a traffic jam, the other isn't.
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McKnifeCommented:
Since network discovery is off by default and not needed for connectivity, I would not ask how much the impact is, but keep it off.
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AlanConsultantCommented:
Question answered.
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