Cannot get full gigabit speed

[Vilian]

Hello guys,

 

I'm trying to make this as  quick and simple as possible:

The problem I'm facing is primary  the fact that I'm unable to get full speed out of the  advertised speeds by my motherboard/router.

 

Here is the setup and environment.

This is my freshly installed OS - source :neofetch

 

Motherboard Ethernet controller - Realtek® 8111H. I installed the driver and rebooted the system before attempting any tests

 

I have the following output from

'ethtool eth0'

Raspberry pi:
Settings for eth0:
        Supported ports: [ TP    MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Half 1000baseT/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Half 1000baseT/Full
        Advertised pause frame use: Symmetric Receive-only
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Link partner advertised link modes:  10baseT/Half 10baseT/Full
                                             100baseT/Half 100baseT/Full
                                             1000baseT/Full
        Link partner advertised pause frame use: Symmetric Receive-only
        Link partner advertised auto-negotiation: Yes
        Link partner advertised FEC modes: Not reported
        Speed: 1000Mb/s
        Duplex: Full
        Auto-negotiation: on
        master-slave cfg: preferred slave
        master-slave status: slave
        Port: Twisted Pair
        PHYAD: 1
        Transceiver: external
        MDI-X: Unknown
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000007 (7)
                               drv probe link
        Link detected: yes



PC
sudo ethtool enp34s0  
[sudo] password for fractal-tess: 
Settings for enp34s0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Advertised pause frame use: Symmetric Receive-only
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Link partner advertised link modes:  10baseT/Half 10baseT/Full
                                             100baseT/Half 100baseT/Full
                                             1000baseT/Full
        Link partner advertised pause frame use: Symmetric Receive-only
        Link partner advertised auto-negotiation: Yes
        Link partner advertised FEC modes: Not reported
        Speed: 100Mb/s
        Duplex: Full
        Auto-negotiation: on
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        MDI-X: Unknown
        Supports Wake-on: pumbg
        Wake-on: g
        Current message level: 0x00000033 (51)
                               drv probe ifdown ifup
        Link detected: yes

 

So here are some questions:

1: Why does my pc's speed report 100Mb/s even though it advertises 1000baseT/Full. As far as i can tell, the only difference to the raspberry pi is that the pi has the 1000baseT/Half.

2: Is this a driver(missing/faulty) or a controller(chip) limitation or something else entirely?
3:What do now?

[Electronics Wizardy]

Seems like its running at 100mbit. This is probably due to a bad cable as you only need have the connectors for 100m. Did you try a new cable?

[corndog2000]

Can you clarify your issue? Is your PC not getting gigabit speed or is your Pi not getting gigabit speed? Keep in mind that Raspberry Pi's don't have gigabit networking.

[Vilian]

26 minutes ago, corndog2000 said:

Can you clarify your issue? Is your PC not getting gigabit speed or is your Pi not getting gigabit speed? Keep in mind that Raspberry Pi's don't have gigabit networking.

It's in the text. I specifically said that I'm unable to get gigabit speed with my motherboard's e ethernet controller 

[Vilian]

36 minutes ago, Electronics Wizardy said:

Seems like its running at 100mbit. This is probably due to a bad cable as you only need have the connectors for 100m. Did you try a new cable?

You are absolutely correct. I'm not sure how I didn't think of that. Both if my cables are old cat 6 cables, but one of them was extra cheap when I bought it, so I suspect I got scammed. I figured it out by switching the cables around, as I do not have a third one. Right now, my pc has gigabit, but the pi has decreed its speed down to 100 mbs/s. So most likely if I want full speed, I'll need to grab another cable. 

 

Thanks for the suggestion 

 

[Vilian]

34 minutes ago, corndog2000 said:

Can you clarify your issue? Is your PC not getting gigabit speed or is your Pi not getting gigabit speed? Keep in mind that Raspberry Pi's don't have gigabit networking.

AFAIK the rp 4 model b specifically has gigabit networking.