Ubuntu Networking :: Slow Wlan With Static Ip On Eth0

Jun 15, 2010

I have set at static ip on eth0:

In have configured the /etc/network/interfaces as:

Code:
auto lo
iface lo inet loopback
auto eth0

[Code]....

However, I experience a slow Internet connection when using wlan.

Is this a routing issue, or have I configured the /etc/network/interfaces config file wrong?

I use Ubuntu 10.04, 2.6.32-22-generic

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Networking :: Production Server With Static IPs On Eth0 And Eth0:1 - Getting Private LAN On Eth1?

Jul 1, 2010

I have two servers on a vlan at my datacentre/colocation and previously both servers had public IPs on their eth0 interfaces. The servers are HP ProLiant DL360s - one is a G4 and one is a G5 The newer G5 is now the LAMP server and the G4 has been retired and I want to repurpose it as an iSCSI target using openfiler freenas or similar.

My G5 has public/static IPs lashed to the eth0 physical interface and the eth1 is not configured to do anything yet. The G4 will have both interfaces available - perhaps one for ssh access from one of my static public IPs and the other to be a private IP on the local vlan. Here is what I am trying to get my head around...

The G5
eth0 - Public IP - full LAMP services on two or three virtual interfaces
eth1 - Private IP 192.168.0.1
The G4
eth0 - Public IP for ssh
eth1 - Private IP 192.168.0.2

Because my traffic between eth1 on these boxes is via private IPs on the local private vlan it doesn't add to my quota for bandwidth. How do I go about configuring the routing and gateways and other aspects of this so that I can run a private IP space network between the eth1s and still serve the outside world from the eth0s...

I am afraid that if I assign the private IPs to the eth1 interfaces the routing may either not work or interfere with the access to the production internet facing interfaces (eth0s).

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I'm trying to use the nm-applet tool get a static ip on my wlan. I've created a configuration and set up the IPV4 settings ok but I can't figure out how to stop nm-applet from creating and using the auto wlan configuration. I've tried deleting the auto config but it seems to recreate it when I try to use wireless again. How to make the manual config the default or permanently disable the auto (dhcp) config?

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I installed Fedara 15 yesterday. I was running Fedora 13 before. Since I did the fresh install, my wireless network runs really really slow, i.e. a few KBs every 30 seconds whereas it ran at full speed in F13. I couldn't find the reason for it. I now tried the live-CD for Fedora 14 and it runs at full speed out of the box (whereas F15 is slow even with all updates installed).
Does somebody know a solution?

Laptop: Lenovo X201
Network Card: Ultimate-N 6300

I gathered uname, iwconfig, lspci and dmesg output for both, Fedara 15 and Fedora 14. But as the number of links is limited here in the forum they're all linked here: [URL]

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Fedora Networking :: Static Addressing Of Eth0/eth1 Doesn't Work?

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I cannot get static addresses to work on eth0 and eth1. eth0 seems to use DHCP while eth1 uses the static information. Sometimes the static info is used but the interfaces get the addresses reversed.

From /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=mosaic

[code]....

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May 8, 2011

After updating to kubuntu 11.04 natty, I have a problem with my internet-connection. The problem happens when I use VoIP-Software like Skype or Twinkle and also when using ktorrent.

When using the mentioned software, after 30-90 seconds the internet gets very slow. In f.e. skype, I can hear the one I phoned very badly.

I use kubuntu on a desktop-PC with a Linksys USB-Wlan-Stick. Detailed information is below.

Code:
uname -a
Linux pr1-desktop 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

[Code]....

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Ubuntu Networking :: Slow File Transfers (FTP, SCP) With Intel Gigabit Or Atheros WLAN?

Nov 16, 2010

I just installed ubuntu as my primary OS, but I have the disk with XP on it and I don't want to go back, but I need faster network connectivity. I have a T60p with Intel Gigabit jacked into my Gigabit router which also has my desktop (running XP) and my NAS. If I FTP files from my NAS (or SCP), I get transfer speeds around 250-500 KB/s (which is not very fast). On this same switch, from my XP desktop I get transfer speeds around 12 MB/s. I get the same speeds using my 802.11n card (Atheros) as with the ethernet NIC (250-500 KB/s).The drivers for the ethernet card and the atheros card are e1000e and ath9k respectively.I have disabled IPv6. Since the problem occurs using either interface, I am just going to concentrate on fixing it for the Ethernet interface (since I believe it to be a systemwide problem).

Code:

skinnersbane@albert:~$ sudo ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full

[code]....

Clearly my card is running at Gigabit, but why the bad transfer speeds? I am using filezilla for FTP (technically FTPES). I closed every other program. My CPU utilization does seem high and I wonder if this is part of the problem. I had no problems with throughput using either interface in Windows XP just one week ago.

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Ubuntu Networking :: Internet Becomes Extremely Slow When Using Static Ip?

Jul 23, 2010

I am currently facing a weird problem, It's that the internet connection becomes extremely slow when using static IP instead of DHCP when Im connected through a cable! The local network seems okay with both, but differs when using the internet!

I've ran a ping test and got the following results!

using static IP

Code:
$ ping -c 3 google.com
PING google.com (209.85.153.104) 56(84) bytes of data.
64 bytes from 209.85.153.104: icmp_seq=1 ttl=42 time=343 ms

[Code].....

When I used static IP i received only one packet while when using DHCP i received all three!! Also I lost 66% of the packets when using the Static IP connection! And most importantly, the speed, DHCP connection was 8 times faster than Static IP connection!

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Jan 27, 2010

I've been using slackware for many years. I think I started with Slack 8. I know how to configure the network, I've had this same POS Dell computer for a few years now but the other day I tried to go to a different distro (first mistake) everything worked fine but it was not for me. Once you go slack you never go back! Anyway I had slack on here prior to the change and it all worked fine. I'm running slack 13 and all of a sudden my network is slow as balls! I set it up as I always have so I did some research and tried a few things, nothing worked. So i enabled DHCP and its fine now.. I have a dell xps 420. onboard intel nic. worked fine when i first installed slack 13. Anyone have any clue what to do? I would like my static IP on this machine.

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I have freshly installed RHEL 5.4 on a Dell Inspiron with WLAN adapter Broadcom 4318. The original driver bcm43xx did not work. So I installed ndiswrapper for using the windows driver.Now I can connect via DHCP, but when I try to assign a static IP address, it still uses the IP address provided by the router (AVM Fritzbox 7270). I always did ifdown/ifup and the static IP and everything else is present in /etc/sysconfig/network-scripts/ifcfg-eth1. But ifconfig always shows the IP address assigned by the router. When I switch off the DHCP server of the router I can't connect to the network anymore. The LAN adapter Broadcom 4400 is working well with a static IP address.

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I get connected to the internet via a router. The router dials to my provider and is connected to my computers via LAN and WLAN (mostly WLAN, see below). A few days ago I installed Suse11.2 to an old laptop (connected both ways: ethernet with wire and wireless ethernet).

The access to the online repositories worked only after I added the LAN-Adapter (Eth0) to the Demilitarised Zone of the firewall (I did also with the WLAN Adapter).

1. Is this normal?

2. Should I add the network devices now to an other zone?

I want to update my main laptop now from openSuse11.1 to 11.2 via new installation (from DVD) and make this installation right.

Or should I install only the data on the DVD and update after the installation via Yast?
(My main laptop has also an loose contact at the ethernet adapter.)

Greetings pistazienfresser

Now I am using (on my main laptop = Samsung X20) openSuse 11.1 and Gnome 2.24.1 (mostly, 1 account is using KDE) and Kernel Linux 2.6.27.45-01.1-pae. "/home" is on an separated partition (as part of an extended partition). I have also 2 NTFS partitions for Windows XP (System and Data), and a FAT, a root (/) and a swarp partition. My router is a AVM fritzbox 7270 (firewall should be included).

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when i check the connection with iwconfig the bitrate is somewhere between 1-54mb/s, rising to 54mb/s and then falls back to 1mb/s, rising to 54mb/s again, falling down, its an infinite loop. im using wpa_supplicant for the connection, but i don't think thats the malefactor. well, you never know .. i tried to set the bitrate with iwconfig wlan0 rate 54M but that ended in a disconnection ...

[Code].....

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I've tried out many Debian distros and noticed the ones that I try based on Ubuntu, my USB WiFi adapter works fine and I don't really have any issues. When I try one that is based on current Jessie, I have sporadic WiFi issues and just overall instability with regards to connectivity and audio playback. I have tried two distros based on Jessie and had very similar results on both. Is there anything in particular I can try? I've done everything short of installing Debian stable and just pointing to Jessie. I've done that in a VM so I know I can handle it, but wanted to se if there was anything I should be trying first. I just didn't think a distro based directly on Jessie and Jessie backports would be any different from installing base Jessie as far as compatibility is concerned.

Code: Select allCard-2: Realtek RTL8191SU 802.11n WLAN Adapter
           driver: r8712u usb-ID: 008-004
           IF: wlan0 state: up

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I can use eth1 as the default gateway and ping google.com, etc. But when I now attempt to communicate with the controller with netcat, e.g.

Code: echo !HH | nc 192.168.1.6 80

I obviously never get an answer since the request is passed via eth1. Using the -g option with netcat doesn't work either. I had a look at iptables but it doesn't seem to be able to do what I want. How I can still use eth0 as my communication port to the controller whilst eth1 is the default gateway?

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I'm running a dual boot Ubuntu 10.04/Backtrack 4 (Ubuntu 8.10) system. I can get internet in the BT4 side but not in the Lucid side. In Lucid I can ping my router, and the network manager says I'm good to go, but I can't get to any web sites. It all started when I tried to put my laptop on another network by mimicking the settings of a computer I had just unplugged from the network. MAC address and all.

ifconfig eth0:

Code:

eth0 Link encap:Ethernet HWaddr 00:1f:16:ba:4c:8c
inet addr:10.136.9.147 Bcast:10.136.9.159 Mask:255.255.255.240
inet6 addr: fe80::21f:16ff:feba:4c8c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

[code]....

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im trying to setup eth0 with subdevice eth0.0 and eth0.99 to come up at boot

eth0 is dhcp clint
eth0:0 is static ip
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/etc/network/interfaces
Code:
auto lo
[Code]....

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[code]....

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[Code]....

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mm@mm:~$ sudo lshw -c network
[sudo] password for mm:
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vendor: Marvell Technology Group Ltd.
physical id: 0

[Code]...

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[Code]...

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So far i have tried:

Code:

But i cant even ping 192.168.1.1 (Network unreachable error). Is it possible that Ubuntu tries to use eth0 (which was connected to a similar /16 before) to ping 192.168.1.1 or is there somethign wrong with my commands?

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