Forcing full speed 2.5gbe, usb-rj45 RTL8156

[m8kbv]

Hi, I am dealing with a usb-rj45 2.5gbe cable from cable matterts with RTL8156 chipset, the network card is visible in truenas but has Media Subtype: autoselect set so the read speed is at 10MB/s.
On the built-in 1Gb/s network card, the speed is 100MB/s and it is visible correctly.
How to force full speed on usb-rj45 network card?
Below is a screen shot:

Greetings

 

[Ericloewe]

You do not. 1 Gb/s and up must be autonegotiated. You probably have a bad cable or misbehaving device.

Besides that, the Realtek experience varies between sucky and miserable. The Realtek USB NIC experience spends far more time in the miserable category. Do not expect the NIC to be remotely reliably, much less reliably do 1 Gb/s, never mind 2.5 Gb/s.

 

[m8kbv]

what is the solution to the problem? Another compatible usb card? If so, which one?
The device connected to windows / macOS works very well, the cables are also ok. on the built-in erhernet flies speed 100MB / s.
There are open topics where they plug in 2.5gb/s cards, but I do not know whether on usb...

 

[elvisimprsntr]

@m8kbv

Welcome!

USB is a polling interface, thus even with a working connection you will likely never achieve full bandwidth. A PCI interface on the other hand will interrupt the host and achieve full bandwidth. USB is not suitable for a multi-gig network interface.

 

[m8kbv]

But speeds will be similar/better than after 1gb/s. On macOS the speed of this card is very satisfactory.
I wanted to make a cheap server on my Mini PC (dell wyse 5070 pentium j5005+8GB RAM+ 1TB SSD as storage), at the same time I wanted to plug into a recently purchased 2.5gbe switch.
Is there really no way to force the speed if the usb interface works? Or is there no other working 2.5gbe usb interface?

Translated with www.DeepL.com/Translator (free version)

 

[m8kbv]

I don't see post editing so I'm writing a post under a post (sorry).
I have Truenas Daughter uploaded, but Truenas scale is I see on Debian. Has the driver situation not improved in truenas scale? Debian seems to have more driver support than a distribution based on freebsd?
Please correct me if I am wrong. Thank you for your answers.

 

[elvisimprsntr]

Is there really no way to force the speed if the usb interface works? Or is there no other working 2.5gbe usb interface?

Speed is auto-negated between the client and the switch. If there is a cable problem and/or one/both ends cannot successfully negotiate 2.5G, it will negotiate down to the next lower speed.

If the client and switch cannot successfully auto negotiate 2.5G, it is an indication there is a problem with one of the following

1. Client driver does not support it.
2. Cable wiring or length problem.
3. Switch or client HW does not support it.

If you have the Dell 5070 "extended" chassis, install a PCI NIC. Otherwise, you are better off using the built in network interface.

Wyse 5070 Thin Client PC

The secure, reliable and cost-effective Dell Wyse 5070 thin client PC lets you enjoy the ultimate flexibility with multiple validated OS, connectivity and form factor options.

www.dell.com

 

[m8kbv]

Speed is auto-negated between the client and the switch. If there is a cable problem and/or one/both ends cannot successfully negotiate 2.5G, it will negotiate down to the next lower speed.

If the client and switch cannot successfully auto negotiate 2.5G, it is an indication there is a problem with one of the following

1. Client driver does not support it.
2. Cable wiring or length problem.
3. Switch or client HW does not support it.

If you have the Dell 5070 "extended" chassis, install a PCI NIC. Otherwise, you are better off using the built in network interface.

Wyse 5070 Thin Client PC

The secure, reliable and cost-effective Dell Wyse 5070 thin client PC lets you enjoy the ultimate flexibility with multiple validated OS, connectivity and form factor options.

www.dell.com

Thank you, I will check after work and let you know.
Is there a different driver base in Truenas scale due to it being built on Debian?

 

[aix]

I'm wondering if you had any success with this. I am experimenting with the same USB NIC and am experiencing the same issue.

 

[Ericloewe]

Time heals all wounds, but for those caused by Realtek.

 

[pureexe]

Same NIC, Same problem. In windows, it is able to force it to run at 2.5G I wonder if TrueNAS or FreeBSD will have a similar approach.

 

[sretalla]

Time heals all wounds, but for those caused by Realtek.

Or... Time wounds all heels (especially those using Realtek) :) (credit: Groucho Marks)

 

[dafonehacker]

Was anyone able to get this adapter running at full speed? Running into the same issue.

I know, USB is not ideal->however, I do not have PCIe slots available and was hoping to be able to add 2.5g to my truenas core like this

 

[dafonehacker]

In case anyone is interested, I was able to get it working. I described how on post #10 of this thread:

USB 3.1 Gen2 2.5Gbps Ethernet Adapter

Has anyone successfully tested any 2.5Gbps USB 3.1 Gen2 or 3.2 Gen 1 network adapters on TruneNas? I have such this network adapters based on Realtek 8156 and unfortunately instead of 2.5Gbps they work only in 100Mbps mode. Yes, yes I know that they are not on supported list. They run at full...

www.truenas.com

 

[crazyfrog23]

Sorry for reviving an old thread but I hit this roadblock after building a truenas system this week and hit this roadblock. The instructions posted here already are usable for someone but not me without spending weeks learning things I dont need to know.

Instead I just installed truenas scale 23.10-RC.1 it recognised my USB 3.0 ports I saw my windows transfer speed hit 266MBps and mostly stayed at 255MBps which was a massive stepup from 1Gb.


My build
Pentium G5400
Asus z370-I with only 4 sata and 1 usable m.2 slot
USB 3.0 RTL8156b off aliexpress
Four 6tb toshiba md04aca600
two 8tb Dell MG06ACA800E unusable for now
Case : Silverstone DS380

Future plans are to build up the existing system and run the Four 6tb toshiba in a cheap cheap HP N36 with a intel i226 card and possibly a better storage controller.

 

[Ericloewe]

Linux/Scale does not magically turn these pieces of crap into a good idea.

 

[crazyfrog23]

Linux/Scale does not magically turn these pieces of crap into a good idea.

I’ve just posted a very simple solution to an issue other users have had. Why are you instead calling my build pieces of crap, if you’re trusted to moderate here you should be a bit respectable than that.

 

[Davvo]

Inadequate hardware with inadequate drivers remains inadequate even if the Linux folks make it work.
Do not expect stability in all conditions.

 

[winnielinnie]

Even outside of the fact that this is a RealTek chipset, USB network adapters are notorious for overheating and dropping the connection during a large, continuous transfer. I would not feel comfortable using it to save important data to my NAS.

 

[crazyfrog23]

Even outside of the fact that this is a RealTek chipset, USB network adapters are notorious for overheating and dropping the connection during a large, continuous transfer. I would not feel comfortable using it to save important data to my NAS.

I’ve had a few boards with Realtek gigabit ethernet over time and in the limited use for home and small business they get absolutely fine.
I completely agree for a data centre and mission critical go for better hardware, even the motherboards Nic is intel. I’m using this system in a really limited capacity for personal use where I will only occasionally turn it on. I care about a small chassis that I can store easily and completely change the hardware over time.

Btw I already replied here you might not typed your reply if the mod hadn’t been disrespectful and refused to approve my reply.