Dear All, I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv :
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
It is detected, but why the speed is always 100Mbps, already change cable but still no luck. I use ethtool and from the output it seems that system know that this NIC support gigabit speed :
Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full
have change the driver r8169 with r8168 and follow the guide on CentOS wiki http://wiki.centos.org/AdditionalResources/HardwareList/RealTekRTL8111b but still it only get 100Mbps speed.
I user kernel 2.6.18-274.3.1.el5 and 2.6.18-274.3.1.el5-PAE. on another machine with the same specs I use kernel 2.6.18-238.9.1.el5 and the gigabit speed works.
Any idea why this happened and how to solve it? Thank you. Regards,
-- ----- Muhammad Panji http://www.panji.web.id%C2%A0 http://www.kurungsiku.com http://sumodirjo.wordpress.com%C2%A0 http://www.kurungsiku.web.id
On 9/27/11, Muhammad Panji sumodirjo@gmail.com wrote:
Dear All, I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv :
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
It is detected, but why the speed is always 100Mbps, already change cable but still no luck. I use ethtool and from the output it seems that system know that this NIC support gigabit speed :
What network switch is this connected to? Does it work if you disable auto-negotiation and force the link speed to 1Gbps?
On 09/27/2011 05:15 AM, Muhammad Panji wrote:
Dear All, I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv :
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
It is detected, but why the speed is always 100Mbps, already change cable but still no luck. I use ethtool and from the output it seems that system know that this NIC support gigabit speed :
Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Fullhave change the driver r8169 with r8168 and follow the guide on CentOS wiki http://wiki.centos.org/AdditionalResources/HardwareList/RealTekRTL8111b but still it only get 100Mbps speed.
I user kernel 2.6.18-274.3.1.el5 and 2.6.18-274.3.1.el5-PAE. on another machine with the same specs I use kernel 2.6.18-238.9.1.el5 and the gigabit speed works.
Any idea why this happened and how to solve it? Thank you. Regards,
If your system is using the r8169 driver for this device then you'll probably need a different driver to get it working? I've got this in my Fedora 15 system and I needed to manually install the r8168 driver to make things work.
Check this out for the details: http://wiki.linuxmce.org/index.php/Realtek_8168
Regards, Dennis
From: Muhammad Panji sumodirjo@gmail.com
I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv : 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) It is detected, but why the speed is always 100Mbps, already change cable but still no luck. I use ethtool and from the output it seems that system know that this NIC support gigabit speed : have change the driver r8169 with r8168 and follow the guide on CentOS wiki http://wiki.centos.org/AdditionalResources/HardwareList/RealTekRTL8111b but still it only get 100Mbps speed.
Same controller here... and I always get downgraded to 100Mbps... I am using kmod-r8168-8.025.00-1 I have other PCs connected to the same switch and they are in 1000Mbps...
# ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Advertised auto-negotiation: Yes Speed: 100Mb/s Duplex: Full Port: Twisted Pair PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: pumbg Wake-on: g Current message level: 0x00000033 (51) Link detected: yes
I tried: # ethtool -s eth0 speed 1000 duplex full autoneg off advertise 0x020 but auto-negotiation stays on and I only get 100Mbps...
I tried: # ethtool -s eth0 duplex full autoneg off advertise 0x020 auto-negotiation is off but nothing change...
JD
John Doe wrote:
From: Muhammad Panji sumodirjo@gmail.com
I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv : 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) It is detected, but why the speed is always 100Mbps, already change
<snip>
I tried: # ethtool -s eth0 speed 1000 duplex full autoneg off advertise 0x020 but auto-negotiation stays on and I only get 100Mbps...
I tried: # ethtool -s eth0 duplex full autoneg off advertise 0x020 auto-negotiation is off but nothing change...
I was working on a similar problem (turned out to be our network switch), but *did* find that order of the ethtool command is significant: you *MUST* have autoneg off as the first parameter; that is, try # ethtool -s eth0 autoneg off speed 1000 duplex full advertise 0x020
mark
From: "m.roth@5-cent.us" m.roth@5-cent.us
I was working on a similar problem (turned out to be our network switch), but *did* find that order of the ethtool command is significant: you *MUST* have autoneg off as the first parameter; that is, try # ethtool -s eth0 autoneg off speed 1000 duplex full advertise 0x020
Tried that but I still get autoneg on... and 100Mbps. In fact, the only way to have autoneg really off seems to not include "speed 1000"... But if I do not put "speed 1000", nothing changes. And as soon as I put "speed 1000", autoneg is back on... even with "autoneg off" in front...
JD
John Doe wrote:
From: "m.roth@5-cent.us" m.roth@5-cent.us
I was working on a similar problem (turned out to be our network switch), but *did* find that order of the ethtool command is significant: you *MUST* have autoneg off as the first parameter; that is, try # ethtool -s eth0 autoneg off speed 1000 duplex full advertise 0x020
Tried that but I still get autoneg on... and 100Mbps. In fact, the only way to have autoneg really off seems to not include "speed 1000"... But if I do not put "speed 1000", nothing changes. And as soon as I put "speed 1000", autoneg is back on... even with "autoneg off" in front...
Dumb question: have you tried plugging any other system with a 1Gb NIC into that port on the switch?
mark
On Tue, Sep 27, 2011 at 9:47 AM, m.roth@5-cent.us wrote:
John Doe wrote:
From: Muhammad Panji sumodirjo@gmail.com
I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv : 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) It is detected, but why the speed is always 100Mbps, already change
<snip> > I tried: > # ethtool -s eth0 speed 1000 duplex full autoneg off advertise 0x020 > but auto-negotiation stays on and I only get 100Mbps... > > I tried: > # ethtool -s eth0 duplex full autoneg off advertise 0x020 > auto-negotiation is off but nothing change...
I was working on a similar problem (turned out to be our network switch), but *did* find that order of the ethtool command is significant: you *MUST* have autoneg off as the first parameter; that is, try # ethtool -s eth0 autoneg off speed 1000 duplex full advertise 0x020
mark
Auto-negotiation is a required part of the 1000Gb protocol. You cannot turn it off.
In the olden days there were a few problems with it, and some people's reaction to every problem was to turn it off (and many made it the default setting). Some still repeat the mantra as if it is gospel, but they are relics of a bygone era. If your first reaction is to disable auto-negotioation, please update your ways. We are a decade into the 21st century, after all.
-☙ Brian Mathis ❧-
From: Brian Mathis brian.mathis+centos@betteradmin.com
If your first reaction is to disable auto-negotioation, please update your ways. We are a decade into the 21st century, after all.
Sure, I can update my ways. I do want to live into the 21st century! ^_^ But that does not solve this annoying auto-negotiation bug...
JD
On Tue, Sep 27, 2011 at 9:27 AM, John Doe jdmls@yahoo.com wrote:
From: Brian Mathis brian.mathis+centos@betteradmin.com
If your first reaction is to disable auto-negotioation, please update your ways. We are a decade into the 21st century, after all.
Sure, I can update my ways. I do want to live into the 21st century! ^_^ But that does not solve this annoying auto-negotiation bug...
Both sides have to negotiate. The usual lingering problem is that someone configured the switch not to.
Les Mikesell wrote:
On Tue, Sep 27, 2011 at 9:27 AM, John Doe jdmls@yahoo.com wrote:
From: Brian Mathis brian.mathis+centos@betteradmin.com
If your first reaction is to disable auto-negotioation, please update your ways. We are a decade into the 21st century, after all.
Sure, I can update my ways. I do want to live into the 21st century! ^_^ But that does not solve this annoying auto-negotiation bug...
Both sides have to negotiate. The usual lingering problem is that someone configured the switch not to.
That's my thinking, which was why I suggested plugging another system with a gigabit NIC into that port.
mark
From: Les Mikesell lesmikesell@gmail.com
Both sides have to negotiate. The usual lingering problem is that someone configured the switch not to.
All other Windows/linux PCs do work fine at 1000Mbps on the same switch... The other PCs using this Realtek too are Windows. I will test another cable from another wall plug just in case...
JD
John Doe wrote:
From: Les Mikesell lesmikesell@gmail.com
Both sides have to negotiate. The usual lingering problem is that someone configured the switch not to.
All other Windows/linux PCs do work fine at 1000Mbps on the same switch... The other PCs using this Realtek too are Windows. I will test another cable from another wall plug just in case...
Seriously, on a switch, individual ports can be, and are, configurable. I've had to call my network people to have it fixed from 100Mb to autoneg for individual machines.
mark
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Brian Mathis -
Dennis Jacobfeuerborn -
Emmanuel Noobadmin -
John Doe -
Les Mikesell -
m.roth＠5-cent.us -
Muhammad Panji