Networking :: LAN Speed And Duplex Setting?
Mar 22, 2010
Using ethtool I can set LAN speed and duplex setting.I have Windows PC1 configured at 100MBPS Full Duplex. I have a linux PC configured in auto-negotiation. Windows PC1 can ping linux PC2 using cross over ethernet cable but not using straight cable. Also if I set linux PC2 in 100MBPS Full Duplex mode and Windows PC1 in 100MBPS Full Duplex mode ping is not successful eiether using straight or cross over cable. Is the second PC need to be in auto negotiation mode?
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May 11, 2011
Looking to force eth0 & eth1 to 100MB Full Duplex/Auto Negotiation off but am having trouble.
When I run: "ethtool -s eth1 speed 100 duplex full autoneg off" manually, it works fine. However when I add it to the intefaces file it does not after several different configuration attempts:
/etc/network/interfaces:
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
#auto eth1
#iface eth1 inet dhcp
[Code].....
it seems my current configuration wont allow both eth0 and eth1 to be active at the same time. I would like them to be active-active if possible (if one goes down the other will service all traffice and vise versa).
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Feb 3, 2011
Every time I turn on opensuse, I have to go into terminal as superuser and type:
/sbin/ethtool -s eth0 duplex full autoneg off
But this is only a temporary change.
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May 29, 2010
I'm trying to change duplex mode on a debian box without success:
Code:
root@k2:~# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
[Code].....
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Nov 5, 2010
have a " Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)" NIC.I was unable to set it 1000bit and full duplexThe output lspci -v as below.Quote:
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
Subsystem: ASUSTeK Computer Inc. Device 8432
[code]...
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Feb 26, 2010
i've had problems with a laptops wireless card (using 8.04).i can connect to my network but only at 1mpbs. so, searching through the forums, i found a post that said to issue this command: Code: sudo iwconfig wlan1 rate 11M and that seemed to solve my problem, temporarily.now i'm growing tiresome of doing disabling wireless, issuing the command, and then bringing the wireless card back up. is there a way i can do this automatically upon boot? i checked out my interfaces file, but it only has the loopback setting in there.is there a config file somewhere that i can set the rate of the wireless card manually?
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May 10, 2011
root@test:~# mii-tool bond0 -v
bond0: 10 Mbit, half duplex, link ok
product info: vendor 00:01:00, model 0 rev 4
basic mode: 10 Mbit, half duplex
basic status: link ok
capabilities:
advertising:
How do I change this to full duplex on bonded NICs? its all GigE NICs and Switch.
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Dec 8, 2010
I am trying to do an HTTP-based 5.5 install. One thing I noticed: if I press Alt-F4 after specifying the network settings, it says:<6>bnx2: eth0 NIC Copper Link is Up, 100 Mbps half duplex
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Mar 19, 2010
I am currently in process of remodeling my home file server and would like some advice. The server has two internal hard drives that are rather small (10-15G) and I've now ordered a larger 2 TB drive which for the time being will have to run as an external drive through USB 1 (going to be rather slow).
I'm probably going to put the OS and swap on one of the internal drives but I was wondering if there was a good option for increasing the system's performance by making the second internal drive act as a kind of buffer for the 2TB usb drive. I'd like both the advantages of the large size of the USB drive and the fast read/write speed of the internal drive. Would it be possible to put it together so all reads and writes to the fileserver would first go to the fast internal drive (or even better, to internal drive and USB drive at once, although I suppose RAID is not an option with USB attached storage), and would then be put to the large drive. It would also be nice if the most used files from the large USB drive would be cached on the internal drive for fast read speed. I understood that ZFS would help me accomplish something the like but as I understand, it's not that easily available on Linux.
The current plan is to make the large drive a simple XFS drive and build a small daemon on the server that would simply move all new files from the internal drive to the USB one, once they are not used but it would be nice to have a more low level solution.
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Jun 8, 2010
I have a modem that is only compatible with NIC's using 10Mbit Full Duplex. If I have a NIC configured to use 100Mbit Full Duplex, the modem loses connection with the computer frequently.
How do I configure my NIC in Ubuntu to use 10Mbit Full Duplex instead of 100Mbit?
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Feb 10, 2010
I have Gateway P-7807u laptop with Ubuntu 9.10 installed, it has HDMI output and I use it to connect to my TV-set. The problem is - not working sound via HDMI, in sound preferences I've chosen duplex digital output, but no success, but picture works well.
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May 24, 2011
For some reason my network card started going 10Mb/s half duplex instead of 1000Mb/s full duplex. System is connected to 8x1Gb HP switch.Other devices connect fine through the switch and get full 1Gb network.I have Centos 5 with all updates. Driver comes from elrepo and as well is updated.
[root@host ~]# modinfo r8168
filename: /lib/modules/2.6.18-238.9.1.el5/weak-updates/r8168/r8168.ko
version: 8.023.00-NAPI[code].....
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Nov 10, 2010
What it says on the tin really. Whenever i set my sound preferences to 5.1 analog surround i get a sort of high-pitched whine/buzz coming through the speakers along with the regular sound, however if i switch to stereo duplex, it vanishes.
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Oct 12, 2010
I have an Asus P6T7 WS motherboard with 2 embedded NIC's.Relevant output from lspci:
0a:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
0b:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
uname -a:
[code].....
I am running a mail server and my POP3 clients have started complaining of slow speeds, about 10 days back. This prompted me to take remedial action on many fronts, finally I decided to look at the link itself.Attempts to force the NIC into full duplex mode using ethtool have failed. The command runs and throws me back to the prompt, but the NIC remains in half duplex mode.
Command that I have tried: ethtool -s eth1 speed 100 duplex full autoneg on modprobe -l r816*:
/lib/modules/2.6.18-164.el5PAE/kernel/drivers/net/r8169.ko
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Jul 23, 2011
Ubuntu 64bit. The sound system works and plays noises correctly when I test the speakers in sound preferances. The internet BBCi player(Radio) plays sound correctly. Banshee & Rhythmbox try to play music files at double, or more, speed with no sound output. Spotify Linux version also tries to playback at double speed with no sound output. Media Player attempts to play music files at high speed. Media player plays the Video and audio tracks at high speed. VLC Will play the video at normal speed but with no audio.
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Dec 20, 2010
i both have the same problem, i'm trying to burn my images at 4 or 8 speed, but ubuntu 10.04 says that the hardware does not support that kind of speed and switch up to 16 speed and more. i know it can burn at low speeds, at least in windows, it is a bit strange that fast burning is okee, and slow not, what can i do to prevent this? i don't wanna burn to much errors on my discs
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Jul 7, 2010
With me, chrome and chromium tend to finish loading/rendering (whatever numion.com/stopwatch measures) the pages usually in less than 5 seconds. All the other browsers, in contrast, will take usually at least twice that time, and it's not uncommon to take up to 30 seconds for something that chrome/chromium didn't take 10 seconds. (My connection speed is ~4 MB/s)By "all other browsers" I mean mainly opera and iceweasel (I assume that other gecko-based browsers like iceape and kazehakase would fare similarly), because konqueror, arora, midori, and netsurf will do even worse. I didn't test text browsers.Is that the usual pattern for everyone, or I must have something wrong on my setup?
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Feb 15, 2009
I just switched from XUBUNTU to fedora 10 and have to say I will most likely change back. Unless someone can tell me how to speed up the internet connection in fedora. I have tried wireless and wired and it doesn't matter which I use the download rate is painfully slow. With wired I get a meg every minute. It really hurts to watch the monitor.Downloads for three seconds then takes a break for eight seconds then downloads for three more seconds and this goes on and on. I have a very fast connection and am used to getting amazing unbroken streams of data at no less than 1 meg every 2 seconds. I hope this is a rectifiable situation.
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Dec 31, 2009
I have a 4 port Speedtouch modem, with machines connecting via 100Mb cards and cables. Is there any way to watch the actual speed of packets being transferred across the LAN? I'm running KRDC, and according to the docs, it should seem like I'm sitting at the remote machine. But this is not the case. GUI apps on the remote machine take a few seconds to update the screen on my laptop.
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Feb 12, 2010
I have a 18Mg download speed internet connection and surfing the web is supper fast, streaming video is decent, etc. when I go to download a file 100 mg or so really anything my download speed will clime to about 1.3mg and then start dropping and level off at about 32 kb or lower. if I pause and restart the download it will jump back up again for a while and then come back down. if i constantly pause and restart the file will download in roughly the same amount of time as if the connection was working properly.
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Dec 26, 2010
I have hesitated posting this because there are a number of threads on the Asus USB N-13.First let me point out that I am using this device.It worked out of the box in Ubuntu 10.10 after several reinstalls using the native Ubuntu driver.However my speed is stuck at 54Mb/s.When tested on a Win7 machine, the connection speed is much closer to 300Mb/s.In wading through the other threads, I am unable to find anyone who has this adaptor running at N speed in Ubuntu 10.10.I have downloaded the latest ASUS driver for LInux but have not installed it as my previous attempts at doing this failed miserably and each time necessitating an OS reinstall.I am an experienced Windows user but a rank newbie when it comes to Ubuntu. The following is the result of iwconfig:chad@linuxbox:~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 Ralink STA ESSID:"midgard" Nickname:"RT2870STA"[code]....
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Jan 28, 2011
dualboot win7 and ubuntu 10.10 x64.All was fine. Suddenly I noticed that download speed on ubuntu is 100-500Kb/s, while it has to be 100Mbps. Same resources download 9Mb/s on dualboot win, so it is not hardware/isp problem. This problem occurs when connecting by eth cable. The connection is over ppp0 vpn tunnel.The ping is very slow - around 300ms even to my ISP.The only soft I was installing recently is tor/vidalia/privoxy,but I removed them all.I also noticed that avahi-daemon is running, can it be causing the delays?
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Sep 1, 2011
I can only connect at 54Mb/s "g" speed. I am assuming I need to compile a newer driver - unfortunately I have become quite confused with the plethora of threads on the subject! And most of them dealing with older ubuntu versions.
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Nov 3, 2010
I'm trying to identify when WAN bandwidth is compromisedI don't want to run this continuously, but would like something that I can put in a script for testing purposes. All the speed tests I've foundhile quite adequate otherwise, utilize a GUI interface.Similarly, is there a linux-based client / server pair that I can use to test out LAN /VLAN issues?
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Jan 10, 2010
So what kind of speed are you getting with Samba over your local network? What speeds should I be seeing? I'm currently transferring a large amount of files from one computer to another. I'm taking everything off of a desktop drive on computer A and putting it on an IDE disk on computer B. Transfers are running at around 600-700 KB/Sec. I've seen moments, mostly when the transfer starts, where speeds were at 1000KB/Sec, but that lasts a very short while and then starts to "degrade" until it reaches 600+ KB/Sec. It then seems to level off there. Is this acceptable? Is this all I can expect to get out of a 10/100 home network? The current transfer is 2.5GB. Looks like it will take 1 hour+ to complete. Transferred 12GB last night. Was looking at 4-5 hours to complete so I left it running while I was sleeping. Personally, I think this is slow. I think it could be exponentially faster.
While I'm running these transfers I'm looking at some documentation on Samba speed tweaks. I've been adding little tidbits here and there to both smb.conf files. Some of it seems to help. Sometimes there is a noticeable difference in speed. Sometimes the changes actually cause degradation in speed. If you have a speed tweak that you would like to share the information will be gratefully accepted. Samba gurus welcome to reply. How do you set up Samba in an office environment? How do you set Samba up in an environment where performance is critical?
Maybe I should forget about Samba and try using a different transfer protocol? Am I expecting too much from Samba?I should stop before I really start to ramble. Anyhow, networking beats the heck out of the sneakernet, at any speed!As a side note, or maybe quite importantly, there is a router and a network switch (not a hub) involved here. Maybe something to consider?
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Feb 10, 2010
When using launchpad and the ubuntu daily build website it is very slow. I get 1.2mb/s normally and the speed drops quickly to 0kb/s This is the case from any version of ubuntu that is installed on my laptop.In windows it is no problem, equally there is no problem from a live cd or an install on my external hard disk. Is canonical blacklisting/slow listing my ip?
I am behind a university network but am sure this problem occurs at home .I did a clean install and had no problem until about an hour ago. When I tried to re download a project using bzr my speed instantly ropped.I had downloaded it fine a couple of hours ago. I hope that someone can shine some light on this, its very hard to work on projects if I can't download them.
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Feb 25, 2010
Last week my ping was 45 this week its 80. I've checked it on three different computers, and reset my router. I called verizon (my subpar isp) they run a few test, say every things fine. I recheck my ping, its back to 45 but only last 5 mins after they check it, then it goes back to 80. I'm always having problems with them, but every time I call them the problems "just so happen" to go away while their helping me.
Anyway, my question is... Is there anyway for me to increase my ping/speed without upgrading my internet? I have 3.5 upload, .75 upload, and a Westell model 327w. I know this is a general question and not really linux related but I thought I would try this forum first since its always so helpful. I have googled this subject but I only find windows related stuff that pertains only to the programs running on the machine. They suggest things like "dont download when you want high ping" and "temporarily turn off seeding for your torrents" It is most important in windows for me though, I like to play games and a difference of 50 and 110 ping does make a difference. Of course, everything seems slower, like streaming movies and stuff.
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Mar 12, 2010
I have a linksys networkrouter WiFi a laptop Windows Vista an a Laptop Ubuntu.On the vista machine i have 54mb/s on the ubuntu i have sometimes 1 and sometimes 25 mb/s When it was a Windows machine it was also 54mb/s.So y question what can i doo to speed it up ?
Some test results:
Windows:
Download 1368.2 kbyte/sec
Upload 86 kbyte/sec
Connection 631 conn/min[code]...
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Mar 21, 2010
I am having problems with download speeds in Ubuntu 9.10. Downloads start at a healthy speed and then drop to almost zero. This affects apt-get install, Pan newsreader etc. With apt-get install if I terminate the download (with [Ctl][C]) and restart it I get another burst at high speed then again back to almost nothing. It makes updates a nightmare. With Pan newsreader I get high speed for most files but when downloading some of the larger files the speed drops right back to almost nothing after a while. I am on wired ethernet (no wireless). Typically I will get about 1.1MB before the speed drops - although I think it may be a function of time rather than data. I am talking to my ISP via a Netgear FWAG114 router and a NetComm NB5 ADSL modem operating in bridge mode. Although a number of users appear to have experienced very similar symptoms here I haven't found an answer that works.
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Apr 8, 2010
I was having terribly slow internet speed with my wireless setup. I followed someone's advice and now my internet speed is flying. However, now I lose connection a lot - almost once every few minutes. Is there any reason for the changes listed below to make me lose connection so easily?
SETUP:
Ubuntu 910 - 64Bit
Wireless Router: WRT160N
Wireless Card: PCI Asus PCE N13
Changes that improved speed, but killed stability:
Radio Band frequency should be 20 MHZ,
standard channel change to 11
advanced wireless settings should be Beacon Interval 2306
Rts thres = 2307
Disable the Security easy setup*option.
Uncheck the Block Anonymous Internet Requests & reduce the MTU size to* 1400
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