Any considerations on a multi-gigabit (1, 2.5, 5, 10) switch?

randman

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May 3, 2020
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Thanks. I got the Sonnet for a dock that I use for my Mac and a Windows laptop. The QNAP looks like a good possibility for a Windows PC.
 

madbrain

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Jan 5, 2019
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i bought 2 ASUS but I also bought 2 cards directly from Arrow Electronics a couple years ago.
Would caution you against the Asus cards. They don't support WOL. I bought one at first and returned it because of this. I spoke to Aquantia about it. They said WOL is something Asus specifically decided to remove from their hardware version.

The 4 AQN-107 Aquantia branded cards I own do support WOL. They are indeed no longer for sale, unfortunately. Not sure if the QNAP card actually supports WOL or not.

Looks like QNAP won't support WOL either :
*QNAP Network Expansion Card does not support Wake-On-LAN (WOL).
 
Last edited:

madbrain

Active Member
Jan 5, 2019
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Thanks !

There are multiple reports of issues with the RTL8156. Easy to Google. IIRC, general instability, segment retries, disconnects. Not good. RTL8156B is expected to fix.
I did some googling on RTL8156 problems and came up empty. Was just in the hot tub on my phone though and not doing advanced queries.
If I don't hear back from Cable Creation or Realtek, the NIC will be going back for sure before the Amazon 30 day return period.
Is there any other multi-gig USB NIC on the market not made by Realtek ?

The H2+ has the RTL8125B. The Syba card has the original RTL8125. Both appear to work fine.
Curious - are you able to set jumbo frames on them under Linux ?

I noticed the Windows drivers for the RTL8156 supports them. But when I connected it to my Odroid XU4 running Ubuntu, I was limited to 1500 MTU.
It otherwise equally misbehaved with my Trendnet TEG-7080ES switch, regardless of the OS/drivers used.
 

techtoys

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Feb 25, 2016
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Thanks. I only have 1 of the 2 Asus in service. I may remove it this weekend. I wanted to replace it with an Intel 520 card. I wonder how long a card like the 520 will survive in my workstation. I don't have server airflow in that box. My LSI controllers run 68C with a fan and I heard the 520 are run hot even with the fan.

My Aquantia are the 5G which could work well in spare 1X slots. I tried to use one in the HP Microserver but its not compatible with the HP. It a known issue on this site.

Sigh. If I could only get my fiber terminated and lit I would not need to use these cards. I need to hire someone to get my fiber working. I tried splicing and connecting it myself but I am useless at it. On the lucky side my home has fiber in wall next to 2 CAT-5 runs.
 

PigLover

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Jan 26, 2011
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I noticed the Windows drivers for the RTL8156 supports them. But when I connected it to my Odroid XU4 running Ubuntu, I was limited to 1500 MTU.
I have avoided the 2.5g USB devices, so I can't offer any direct experience. But could that issue be due to the older 32 bit drivers on the XU4?
Curious - are you able to set jumbo frames on them under Linux ?
As noted - I've only used the PCIe based RTL8125. I also updated with the Realtek drivers because the ones included in the 5.4 kernel don't support the "B" model chipset in the H2+. So it could be different chipsets. I could be different drivers. Not sure. But I do have jumbo frames running on it right now without issue.
 

madbrain

Active Member
Jan 5, 2019
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I have avoided the 2.5g USB devices, so I can't offer any direct experience. But could that issue be due to the older 32 bit drivers on the XU4?

As noted - I've only used the PCIe based RTL8125. I also updated with the Realtek drivers because the ones included in the 5.4 kernel don't support the "B" model chipset in the H2+. So it could be different chipsets. I could be different drivers. Not sure. But I do have jumbo frames running on it right now without issue.
Yes, the issue could certainly be related to the XU4 and the old kernel. I successfully compiled them. However, I can't get them to install on Ubuntu Mate 18.04 .
sudo make install
and
sudo make install_rules
don't do the trick.
Neither do
sudo depmod -a
and
sudo update-initramfs -u
as documented in the Readme.

As a result, the cdc_ncm driver is used for the RTL8156, and it has issues. I'm not convinced the NIC would actually behave with my switch with the proper drivers, but would like to find out still.
 

lowfat

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Nov 25, 2016
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Going to give this a shot. Ordered a Mikrotik CRS305-1G-4S+IN, one of the Ipolex SPF+ modules that STH tested @ 2.5GbE/5GbE, and ordered a cheap Cable Matters 2.5GbE USB adapter. Unfortunately haven't found any 5GbE USB adapters that support WOL. Or at least they don't mention that it works or not.
 

nickf1227

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Sep 23, 2015
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Going to give this a shot. Ordered a Mikrotik CRS305-1G-4S+IN, one of the Ipolex SPF+ modules that STH tested @ 2.5GbE/5GbE, and ordered a cheap Cable Matters 2.5GbE USB adapter. Unfortunately haven't found any 5GbE USB adapters that support WOL. Or at least they don't mention that it works or not.
I know the the modules can do 1GbE, 2.5, 5 and 10, but I don't think the CRS305 supports those link speeds.
 

randman

Member
May 3, 2020
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This summarizes my foray into 10GbE networking.

I started out with the MikroTik CRS309-1G-8S+IN SFP+ switch in my basement. I have servers and a NAS all connected via SFP+ DAC working well with the switch. I'm pretty happy with the lower cost and lower power usage of SFP+ based equipment. I'm not a fan of MikroTik's RouterOS, though. IMO, RouterOS is a bit unintuitive, and I don't like how it shows features/functionality that the actual switch is incapable of (such as wireless functionality showing up in RouterOS, despite the switch having no wireless functionality) and the switch providing functionality that it may not be very good at doing since certain features would require high CPU usage. So, when playing with the software, it's not always obvious what software features the hardware does well, doesn't do well, or can't/shouldn't do at all. But other than that, I've been pretty happy with the MikroTik switch's hardware (and more importantly, low cost) and overall performance for what I use it for.

Now that I got bitten by the 10GbE bug, I decided I wanted 10GbE in other parts of my home. All the rooms in my home have Ethernet (well, not the bathrooms), so I wanted to take advantage of existing cabling. 90% of my in-wall cables are CAT 6, and the remaining are CAT 5e that were installed almost 20 years ago. I'm in no mood to do more wiring in my home, so I wanted to try multi-gigabit switches.

Previously, I got the Netgear XS505M (5 -port) multi-gigabit unmanaged switch. But after seeing the ZyXEL XS1930-10, I decided to try it it (compared to the Netgear XS505M, the ZyXEL has double the ports, is not significantly more money for double the ports, and it's a managed switch). So, I ordered a ZyXEL XS1930-10 from Provantage to test mult-gigabit.

I got the MikroTik S+RJ10 SFP+ to 10Gbase-T module so I can connect the MikroTik switch in my basement to the existing CAT 6 cable going up to the central equipment closet in the 2nd floor. In the equipment closet, I patched the basement port to the port for my 1st floor office. I installed a ZyXEL XS1930-10 Multi-gigabit switch in my office. So, connectivity was:

Basement MikroTik <===> 2nd floor equipment closet patch cable <===> 1st floor Office ZyXEL

With this setup, I was only getting 5GbE performance between the switches :-(. I had hoped to get 10GbE, since I estimated I was still below the theoretical limit of what Cat 6 ought to be able to do to get 10GbE performance.

Then, my 2nd ZyXEL XS1930-10 finally arrived that I ordered from zyxelguard (Provantage was out of stock. I called zyxelguard, and I got an even lower price than their online advertised price. Since they are in the West coast and I'm in the East coast, it took a week to receive (you could pay more for 2 day ground). I guess @PigLover is in the West coast so he got his the next day.

So, when my 2nd ZyXEL arrived, I put it in the 2nd floor equipment closet next to my core Cisco switch.

Hence, I changed my connections to:

Basement MikroTik <===> ZyXEL switch in 2nd floor equipment closet <===> 1st floor Office ZyXEL

So, having the ZyXEL in the equipment closet basically "reduced" the length of the CAT 6 cable run from the basement to my office.

With this setup, I got 10GbE connectivity between the MikroTik basement switch and my ZyXEL office switch! Perfect!

Then, for one of my "edge" switches, I decided to get the Netgear MS510TX "funky switches " (Patrick's words), composed of 4 x1 GbE, 2 x 2.5 GbE, 2 x 5 Gbe, 1 x 10GbE, and 1 x SFP+.

I ran around to most of the rooms in my home with the Netgear switch just to test what connectivity each room can get with the ZyXEL in the main equipment closet. I was pleasantly surprised that, in all the rooms I tested, the Netgear and ZyXEL switches established 10GbE connectivity with each other, even on old CAT 5e cabling from a couple of rooms wired almost 20 years ago (granted, the wiring from these rooms were less than 50'). I haven't run any iPerf testing yet, but my switches all showing 10GbE in their web GUI and LED lights was a good sign.

But what I really wanted to do is to use the Netgear switch in the Sunroom. This "funky" switch would be perfect for my Sunroom, where I wanted SFP+ for a PC, 1GbE for a number of devices such as a printer, and (for now) 1GbE for a WiFi AP (and, in the future, the switch can support 2.5GbE if needed for future WiFi AP [ I don't need POE here, since I can always use a nearby outlet for a WiFi AP. Besides, the POE version of the Netgear switch is much more expensive]).

I really wanted to get > 1GbE performance in my Sunroom. This room has always been problematic with WiFi, since it is an extension to the original part of the house. One of the walls in the Sunroom is the original exterior wall of the house, which is made of stone. Sometimes, WiFi would work well, sometimes it would be terrible. So one day, several years ago, I decided I really wanted Ethernet to the room. Unfortunately, there was no easy way to route an Ethernet cable from the central closet to the room. I had to go outdoors: the first part of the cable from the 2nd floor equipment closet is indoors, but the 2nd half or so of the cable actually runs outside the house before it goes back indoors. At the time, outdoor-rated CAT 6 cable was not readily available (and this was before multi-gigabit was in my radar). So, I used CAT 5e cable. The cable length was about 130 feet. I wasn't too confident on what performance I can get out of a 130' CAT 5e outdoor-rated cable.

I put the Netgear switch in the Sunroom. Lo and behold, with a 130' CAT 5e cable, I got 10GbE connectivity between the Sunroom and my equipment closet in the 2nd floor!! I wonder if the fact that the cable runs outdoors means there is no interference/cross talk from other sources, which help achieve the 10GbE performance.

The ZyXEL and Netgear also have SFP+, and for those, I plan on using Mellanox NICs, like I did for my other basement servers.

So far, I'm pretty pleased with the multi-gigabit switches. Netgear and ZyXEL web GUIs are okay (as Patrick noted, Netgear not having user names and a silly default password of "password" are ridiculous). I still like Cisco GUI the best, but not their multi-gigabit switch availability/prices.

Having said that I'm thinking that I may in the not too distant future replace my old Cisco SG200-26 with maybe the Cisco SG350X-24 switch (It has 4 x SFP+ that may be useful to use as uplink to the ZyXEL). Any thoughts on SG350x-24?

One caveat about the ZyXEL that I noticed. If it's warmer than about 75 degrees F ambient temperature, I noticed its fan is silent for 5 to 10 seconds, and then the fan ramps up for a second or so, then is quiet for another 5 to 10 seconds, then it ramps up for a second or so, then is quiet, and so on and on... I sit about 2 feet from the switch, so I do hear it. In a way, it might be better if it were just running on a very low RPM constantly, rather than ramping up, being quiet, ramping up, etc. My other ZyXEL is in an equipment closet, which is in a guest room. You won't really hear it when 10' away even if the equipment closet door is open.
 
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lowfat

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I know the the modules can do 1GbE, 2.5, 5 and 10, but I don't think the CRS305 supports those link speeds.
From what I've read its the module the negotiates the link speed. So as long as the module works in the switch, all should be good. Also have found a few posts on r/homelab that have the CRS305-1G-4S+IN working @ 2.5G.
 
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randman

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From what I've read its the module the negotiates the link speed. So as long as the module works in the switch, all should be good. Also have found a few posts on r/homelab that have the CRS305-1G-4S+IN working @ 2.5G.
I have the MikroTik CRS309-1G-8S+IN SFP+ switch and the S+RJ10 SFP+ to 10Gbase-T module. I've seen it connect at 5G and 10G (depending on physical cable length). I would expect that the Mikrotik CRS305-1G-4S+IN would behave similarly with the proper SFP+ to 10Gbase-T module (many modules tested by STH, as mentioned in their reviews, support Multi-gigabit). MikroTik explicitly says that the the S+RJ10 supports multi-gigabit.
 
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lowfat

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WOL definitely works on the Cable Matters 2.5GbE USB adapter. However I can't turn the machine on from a shutdown. Could do it w/ onboard. But it seems the motherboard turns off USB devices. :(

Still waiting for the switch and transceiver, so haven't tested how well the 2.5GbE works.
 

hmw

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Apr 29, 2019
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WOL definitely works on the Cable Matters 2.5GbE USB adapter. However I can't turn the machine on from a shutdown. Could do it w/ onboard. But it seems the motherboard turns off USB devices. :(

Still waiting for the switch and transceiver, so haven't tested how well the 2.5GbE works.
IIRC, the machine would have to support WOL, wake-from-USB, USB S4/S5 Power and Wake on USB from S5

I dont know what machine you have but my NUC does support power on from USB: Remote Control or USB Device Doesn't Wake Up the Intel® NUC
 
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lowfat

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Got the switch and transceiver yesterday. Am getting a 2.5GbE link w/ the USB NIC. But getting pretty poor performance.
Code:
PS E:\Downloads\iperf-3.1.3-win64> .\iperf3.exe -c 192.168.1.222
Connecting to host 192.168.1.222, port 5201
[  4] local 192.168.1.10 port 61689 connected to 192.168.1.222 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec  92.2 MBytes   774 Mbits/sec
[  4]   1.00-2.00   sec   128 MBytes  1.08 Gbits/sec
[  4]   2.00-3.00   sec  54.9 MBytes   460 Mbits/sec
[  4]   3.00-4.00   sec  39.0 MBytes   327 Mbits/sec
[  4]   4.00-5.00   sec   137 MBytes  1.15 Gbits/sec
[  4]   5.00-6.00   sec  83.1 MBytes   697 Mbits/sec
[  4]   6.00-7.00   sec   118 MBytes   990 Mbits/sec
[  4]   7.00-8.00   sec  69.8 MBytes   585 Mbits/sec
[  4]   8.00-9.00   sec  82.4 MBytes   691 Mbits/sec
[  4]   9.00-10.00  sec  91.5 MBytes   767 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec   896 MBytes   752 Mbits/sec                  sender
[  4]   0.00-10.00  sec   896 MBytes   752 Mbits/sec                  receiver

iperf Done.
PS E:\Downloads\iperf-3.1.3-win64> .\iperf3.exe -c 192.168.1.222 -R
Connecting to host 192.168.1.222, port 5201
Reverse mode, remote host 192.168.1.222 is sending
[  4] local 192.168.1.10 port 61710 connected to 192.168.1.222 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   131 MBytes  1.10 Gbits/sec
[  4]   1.00-2.00   sec   130 MBytes  1.09 Gbits/sec
[  4]   2.00-3.00   sec   138 MBytes  1.15 Gbits/sec
[  4]   3.00-4.00   sec   134 MBytes  1.12 Gbits/sec
[  4]   4.00-5.00   sec   138 MBytes  1.16 Gbits/sec
[  4]   5.00-6.00   sec   139 MBytes  1.16 Gbits/sec
[  4]   6.00-7.00   sec   139 MBytes  1.16 Gbits/sec
[  4]   7.00-8.00   sec   137 MBytes  1.15 Gbits/sec
[  4]   8.00-9.00   sec   135 MBytes  1.14 Gbits/sec
[  4]   9.00-10.00  sec   137 MBytes  1.15 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1.33 GBytes  1.14 Gbits/sec  12275             sender
[  4]   0.00-10.00  sec  1.33 GBytes  1.14 Gbits/sec                  receiver

If I enable jumbo frames on my desktop, it does perform better. But if I enable JF on my server, all my containers have network issues. Even tried setting up a different server w/ a faster CPU to verify it wasn't a CPU bottleneck. Both servers had ConnectX-3s @ 10GbE.
Code:
iperf Done.
PS E:\Downloads\iperf-3.1.3-win64> .\iperf3.exe -c 192.168.1.222
Connecting to host 192.168.1.222, port 5201
[  4] local 192.168.1.10 port 62026 connected to 192.168.1.222 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   282 MBytes  2.36 Gbits/sec
[  4]   1.00-2.00   sec   281 MBytes  2.36 Gbits/sec
[  4]   2.00-3.00   sec   282 MBytes  2.37 Gbits/sec
[  4]   3.00-4.00   sec   283 MBytes  2.37 Gbits/sec
[  4]   4.00-5.00   sec   283 MBytes  2.37 Gbits/sec
[  4]   5.00-6.00   sec   282 MBytes  2.37 Gbits/sec
[  4]   6.00-7.00   sec   281 MBytes  2.35 Gbits/sec
[  4]   7.00-8.00   sec   283 MBytes  2.37 Gbits/sec
[  4]   8.00-9.00   sec   283 MBytes  2.37 Gbits/sec
[  4]   9.00-10.00  sec   283 MBytes  2.37 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec  2.76 GBytes  2.37 Gbits/sec                  sender
[  4]   0.00-10.00  sec  2.76 GBytes  2.37 Gbits/sec                  receiver

iperf Done.
PS E:\Downloads\iperf-3.1.3-win64> .\iperf3.exe -c 192.168.1.222 -R
Connecting to host 192.168.1.222, port 5201
Reverse mode, remote host 192.168.1.222 is sending
[  4] local 192.168.1.10 port 62046 connected to 192.168.1.222 port 5201
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   179 MBytes  1.50 Gbits/sec
[  4]   1.00-2.00   sec   182 MBytes  1.52 Gbits/sec
[  4]   2.00-3.00   sec   172 MBytes  1.45 Gbits/sec
[  4]   3.00-4.00   sec   178 MBytes  1.50 Gbits/sec
[  4]   4.00-5.00   sec   177 MBytes  1.49 Gbits/sec
[  4]   5.00-6.00   sec   177 MBytes  1.48 Gbits/sec
[  4]   6.00-7.00   sec   175 MBytes  1.47 Gbits/sec
[  4]   7.00-8.00   sec   177 MBytes  1.48 Gbits/sec
[  4]   8.00-9.00   sec   172 MBytes  1.44 Gbits/sec
[  4]   9.00-10.00  sec   177 MBytes  1.49 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1.73 GBytes  1.48 Gbits/sec  17750             sender
[  4]   0.00-10.00  sec  1.73 GBytes  1.48 Gbits/sec                  receiver

In the past when I've used 10GbE, I've always just ran a DAC between the two systems and it was used for storage only and JF wasn't an issue. So new territory for me.

I guess I can try a ConnectX-2 in my desktop. Just a real pain as I'll have to swap my video card heatsink w/ the stock one as the current one is huge and it blocks the slot. Hence why I wanted to use USB.
 

hmw

Active Member
Apr 29, 2019
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In the past when I've used 10GbE, I've always just ran a DAC between the two systems and it was used for storage only and JF wasn't an issue. So new territory for me.
You don't need jumbo frames to hit 10gbps - I dont use jumbo frames and can hit 10 gbps & 2.5 gbps via a TB3 adapter and the CableMatters adapter respectively

Can you try running iperf3 in parallel mode with 2 or more streams? Does the aggregate speed go up?
 

lowfat

Active Member
Nov 25, 2016
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You don't need jumbo frames to hit 10gbps - I dont use jumbo frames and can hit 10 gbps & 2.5 gbps via a TB3 adapter and the CableMatters adapter respectively

Can you try running iperf3 in parallel mode with 2 or more streams? Does the aggregate speed go up?
It goes up a bit for sender. Pretty much the same in receiver mode. Not sure what is with the massive amounts of retries in receiver.
Code:
PS E:\Downloads\iperf-3.1.3-win64> .\iperf3.exe -c 192.168.1.50 -P 5 -R
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-10.00  sec   532 MBytes   446 Mbits/sec                  sender
[  4]   0.00-10.00  sec   532 MBytes   446 Mbits/sec                  receiver
[  6]   0.00-10.00  sec   566 MBytes   474 Mbits/sec                  sender
[  6]   0.00-10.00  sec   565 MBytes   474 Mbits/sec                  receiver
[  8]   0.00-10.00  sec   445 MBytes   373 Mbits/sec                  sender
[  8]   0.00-10.00  sec   444 MBytes   373 Mbits/sec                  receiver
[ 10]   0.00-10.00  sec   498 MBytes   418 Mbits/sec                  sender
[ 10]   0.00-10.00  sec   498 MBytes   418 Mbits/sec                  receiver
[ 12]   0.00-10.00  sec   430 MBytes   361 Mbits/sec                  sender
[ 12]   0.00-10.00  sec   430 MBytes   361 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  2.41 GBytes  2.07 Gbits/sec                  sender
[SUM]   0.00-10.00  sec  2.41 GBytes  2.07 Gbits/sec                  receiver
PS E:\Downloads\iperf-3.1.3-win64> .\iperf3.exe -c 192.168.1.50 -P 5 -R
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   189 MBytes   159 Mbits/sec  4923             sender
[  4]   0.00-10.00  sec   189 MBytes   159 Mbits/sec                  receiver
[  6]   0.00-10.00  sec   167 MBytes   140 Mbits/sec  5250             sender
[  6]   0.00-10.00  sec   167 MBytes   140 Mbits/sec                  receiver
[  8]   0.00-10.00  sec   371 MBytes   311 Mbits/sec  11537             sender
[  8]   0.00-10.00  sec   370 MBytes   311 Mbits/sec                  receiver
[ 10]   0.00-10.00  sec   242 MBytes   203 Mbits/sec  7671             sender
[ 10]   0.00-10.00  sec   241 MBytes   202 Mbits/sec                  receiver
[ 12]   0.00-10.00  sec   407 MBytes   342 Mbits/sec  13071             sender
[ 12]   0.00-10.00  sec   407 MBytes   342 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  1.34 GBytes  1.15 Gbits/sec  42452             sender
[SUM]   0.00-10.00  sec  1.34 GBytes  1.15 Gbits/sec                  receiver
 

lowfat

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Nov 25, 2016
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Did more troubleshooting today. First iperf below is USB NIC through existing 1GbE network. 2nd one is USB NIC directly connected to 10GbE adapter in the server. If I set the USB NIC to a 1GbE link, I get the same huge number of retries. So this leads me to believe it is the Ipolex SFP+ module. Which sucks as I bought it from outside the country. :(

Code:
PS E:\Downloads\iperf-3.1.3-win64> .\iperf3.exe -c 192.168.1.50 -P 2 -R
Connecting to host 192.168.1.50, port 5201
Reverse mode, remote host 192.168.1.50 is sending
[  4] local 192.168.1.10 port 62766 connected to 192.168.1.50 port 5201
[  6] local 192.168.1.10 port 62767 connected to 192.168.1.50 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   565 MBytes   474 Mbits/sec    0             sender
[  4]   0.00-10.00  sec   564 MBytes   473 Mbits/sec                  receiver
[  6]   0.00-10.00  sec   569 MBytes   478 Mbits/sec    0             sender
[  6]   0.00-10.00  sec   568 MBytes   477 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  1.11 GBytes   951 Mbits/sec    0             sender
[SUM]   0.00-10.00  sec  1.11 GBytes   950 Mbits/sec                  receiver

iperf Done.
PS E:\Downloads\iperf-3.1.3-win64> .\iperf3.exe -c 192.168.1.50 -P 2 -R
Connecting to host 192.168.1.50, port 5201
Reverse mode, remote host 192.168.1.50 is sending
[  4] local 192.168.1.10 port 62821 connected to 192.168.1.50 port 5201
[  6] local 192.168.1.10 port 62822 connected to 192.168.1.50 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   631 MBytes   529 Mbits/sec  20973             sender
[  4]   0.00-10.00  sec   631 MBytes   529 Mbits/sec                  receiver
[  6]   0.00-10.00  sec   787 MBytes   660 Mbits/sec  22268             sender
[  6]   0.00-10.00  sec   787 MBytes   660 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  1.38 GBytes  1.19 Gbits/sec  43241             sender
[SUM]   0.00-10.00  sec  1.38 GBytes  1.19 Gbits/sec                  receiver

iperf Done.
 

hmw

Active Member
Apr 29, 2019
337
110
43
@lowfat - any updates? can you describe your environment in more detail ? Windows 10? Win 201x server? Linux?