Re: [Blind-sysadmins] LAN Speeds

Hi, Assuming 100Mbps - E.G. 100 Megabits you can in theory expect a speed of 100/8 - E.G. 12.5MBps (12.5 megabytes a second). In practice it will be slower than that due to software overheads. Assuming 1 Gbps - E.G. 1 gigabit a second you can expect speeds of 1000/8 - E.G. 125MBps (125 megabytes per second). Note that in this scenario in addition to software overheads the speed of the device you're transfering from may also come into play. I don't know what is causing your slowdowns but if I were in your situation I'd try to apply basic troubleshooting principals: remove as many variables from the situation as possible then build your way back up. In your situation this would probably mean a direct connection then assuming that worked add the router into the equation and go from there. Do the machines have any anti virus products running that might be scanning encoming / outgoing traffic? One slightly over the top test might be to boot into Ubuntu or similar on both machines and copy a test file. Obviously there are quite a few variables at play there, but if you get sensible speeds you'll be able to rule out the hardware. Cheers, Ben. On 2/19/18, Luke Scholey wrote:

Hi Ben I’ll give that program a try - thanks. They are definitely not using WiFi :) I turned it off before testing. What makes you say my speeds seem to high for 100 mbps? Wouldn’t you say they are very slow for both 100 and gigabit? Thanks Luke

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On 18 Feb 2018, at 22:34, Ben Mustill-Rose wrote:

Hi

When I've done this in the past I've just set one of the machines up as a DHCP server then everything pretty much just works as you'd expect it to. Windows actually includes a DHCP server (of sorts) as part of internet connection sharing but when I've wanted more control I've used TFTPD32 which is what I'd suggest you use, but it's been a couple of years so I can't speak to the accessibility of the latest versions.

Another silly question but are you sure that both machines are using Ethernet and not WiFi? Your numbers are strange - a bit too high for 100Mbps Ethernet but way too low for Gigabit. To be honest they're slow for WiFi as well, but depending on your environment not completely unrealistic.

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On 2/18/18, Luke Scholey wrote: Hi Ben I had the same thought about the router and throughout these past couple of days have triple checked my equipment and it is all gigabit :) FTP gives me similar speeds, average is about 5 MB faster so I’m getting about 20 MB. I never thought connecting the two together would actually work? What will be created when I do that then? And which, if any, of the two devices will initiate things? Thanks for all help guys Luke

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On 18 Feb 2018, at 18:53, wrote:

2 ghings:

With gigabit, you get the auto-MDIX standard which means that you do not need to worry about crossover cables any more. Secondarily, unless you are using fiber interface cards, gigabit ethernet will auto-negotiate the best speed/duplex settings.

-----Original Message----- From: Blind-sysadmins [mailto:blind-sysadmins-bounces@lists.hodgsonfamily.org] On Behalf Of George Bell Sent: Sunday, February 18, 2018 13:34 To: 'Blind sysadmins list' Subject: Re: [Blind-sysadmins] LAN Speeds

If you are connecting the laptops directly by RJ45 cable, I presume it need to be a crossover cable?

George

-----Original Message----- From: Blind-sysadmins [mailto:blind-sysadmins-bounces@lists.hodgsonfamily.org] On Behalf Of Ben Mustill-Rose Sent: 18 February 2018 18:20 To: Blind sysadmins list Subject: Re: [Blind-sysadmins] LAN Speeds

Hi

Try connecting the laptops to each other directly - that way you can rule out all the other equipment. If that fails I'd try transfering the same files over FTP / SCP to see if that makes a difference assuming you're currently using SMB. Also, probably a silly question but are you sure the router is gigabit - most consumer grade / ISP provided routers aren't?

Cheers, Ben.

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On 2/18/18, Luke Scholey wrote: Hi billy I found it and changed it to full duplex however nothing has changed unfortunately. Do you know of anything else I could test to fix this? Thanks Luke

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On 18 Feb 2018, at 15:49, Billy Irwin wrote:

Hi Luke,

It should be under the network configuration of the NIC.

Billy L. Irwin - K9OH Section Emergency Coordinator South Carolina Amateur Radio Emergency Services ARRL South Carolina Section www.ares-sc.org Phone: 803-497-5560 Home/Office: 803-567-2400 billy.irwin@outlook.com

-----Original Message----- From: Blind-sysadmins [mailto:blind-sysadmins-bounces@lists.hodgsonfamily.org] On Behalf Of Luke Scholey Sent: Sunday, February 18, 2018 9:55 AM To: Blind sysadmins list Subject: Re: [Blind-sysadmins] LAN Speeds

Hi It’s an SSD. How do I check the NIC duplex? I never considered that. Thanks Luke

> On 18 Feb 2018, at 01:23, Billy Irwin > wrote: > > Hi, > > I would make sure that the NIC's are in full duplex. What kind of > networking equipment are you using? Also, what is the HD specs? SSD > or SATA? > > Thanks, > > Billy > > in@outlook.com > > -----Original Message----- > From: Blind-sysadmins > [mailto:blind-sysadmins-bounces@lists.hodgsonfamily.org] On Behalf > Of Luke Scholey > Sent: Saturday, February 17, 2018 12:31 PM > To: blind-sysadmins@lists.hodgsonfamily.org > Subject: [Blind-sysadmins] LAN Speeds > > Hi All >>> I have a network with gigabit equipment and cabling installed >>> across the entire infrastructure and I am using 2 win 10 pro Dell >>> laptops to transfer files from 1 PC to the other. These laptops >>> both have gigabit NICs installed and are wired into the network. >>> The thing is, I am only getting about 10 to 15 mbps transfer >>> speeds. My first question is can anyone figure out why or is there >>> something silly I have missed? >>> Secondly, is there any accessible tools I could use to run tests >>> to try and identify the limiting factors that might be causing this >>> problem? >>> If any further info is needed that might help I would be happy to >>> give it. >>> Thanks for any help >>> Luke > > -- > Luke Scholey > Webmaster i/c Publishing > lukescholey.co.uk > Tel: +44 7759 282586 > Email: l.scholey@lukescholey.co.uk > > https://nam01.safelinks.protection.outlook.com/?url=WWW.LUKESCHOLEY. > CO.UK&data=02%7C01%7C%7Cd845527ffbd348b2ec6a08d5762c470e%7C84df9e7fe > 9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636544854894448628&sdata=oLT8jgudF > AthJTdJOV%2BPcIYUKCM%2Flm7Xns%2BFGtgi7mo%3D&reserved=0 > All feedback and questions welcome. The site admin can be contacted > at: > webmaster@lukescholey.co.uk > All content copyright C 2012-2018 LukeScholey.co.uk Confidentiality > Notice: > This message and any attachments are private and confidential and > may be subject to legal privilege and copyright. If you are not the > intended recipient please do not publish or copy it to anyone else. > If you have received this message in error please notify the sender > immediately by using the reply facility in your email software and > then remove it from your system. > Disclaimer: > Although this email and attachments have been scanned for viruses, > LukeScholey.co.uk accepts no liability for any loss or damage > arising from the receipt or use of this communication. > _______________________________________________ > Blind-sysadmins mailing list > Blind-sysadmins@lists.hodgsonfamily.org > https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fli > sts.hodgsonfamily.org%2Flistinfo%2Fblind-sysadmins&data=02%7C01%7C%7 > Cd845527ffbd348b2ec6a08d5762c470e%7C84df9e7fe9f640afb435aaaaaaaaaaaa > %7C1%7C0%7C636544854894448628&sdata=VMgNwjZ3zlBkyXn%2FQ7J1bpYk97zmAD > vP1xHycMrB6Vk%3D&reserved=0 > > _______________________________________________ > Blind-sysadmins mailing list > Blind-sysadmins@lists.hodgsonfamily.org > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fli > sts.hodgsonfamily.org%2Flistinfo%2Fblind-sysadmins&data=02%7C01%7C%7 > Cde6a6ad953934f87424b08d576dfaab4%7C84df9e7fe9f640afb435aaaaaaaaaaaa > %7C1%7C0%7C636545625366347216&sdata=oU0VRfWuIlakhecBmgJZslmKkhDCmUnY > x7wNA6mXuBA%3D&reserved=0

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