Networking :: Metric Prioritize Between Two Ethernet Lan?
Jun 16, 2010
I have configured guessnet along with ifplugd and it is working really well. I have two internet connection at office and I like to set a priority there. I have already installed ifmetric and here is my guessnet related config
[Code]...
You can see the metric1 is set to office-airtel which I like to be set when I connect lan at office. But it always set to office-tata. Obviously I checked both the connection by omitting its presence from map and both of them individually working well with guessnet. I wounder if guessnst can't set metric between the same lan device.
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Jan 11, 2010
How to trace the energy information from the trace file. also how to change the energy drain in faster manner.
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Apr 27, 2011
On a server with 4 network interfaces, sometimes not all 4 are plugged in. All 4 interfaces have the same IP address. Sometimes the machine cannot access the local LAN, but can access the internet via a router on the local LAN, after a reboot. What I find is that the routing table looks like this:
Code:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.30.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
172.30.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
172.30.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth2
172.30.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth3
0.0.0.0 172.30.0.2 0.0.0.0 UG 1 0 0 eth0
0.0.0.0 172.30.0.2 0.0.0.0 UG 2 0 0 eth1
0.0.0.0 172.30.0.2 0.0.0.0 UG 3 0 0 eth2
0.0.0.0 172.30.0.2 0.0.0.0 UG 4 0 0 eth3
On the console I cannot reach any local host, but I can reach internet hosts. Pinging the gateway router 172.30.0.2 gets no answer. When I manually change it to this:
Code:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.30.0.0 0.0.0.0 255.255.0.0 U 1 0 0 eth0
172.30.0.0 0.0.0.0 255.255.0.0 U 2 0 0 eth1
172.30.0.0 0.0.0.0 255.255.0.0 U 3 0 0 eth2
172.30.0.0 0.0.0.0 255.255.0.0 U 4 0 0 eth3
0.0.0.0 172.30.0.2 0.0.0.0 UG 1 0 0 eth0
0.0.0.0 172.30.0.2 0.0.0.0 UG 2 0 0 eth1
0.0.0.0 172.30.0.2 0.0.0.0 UG 3 0 0 eth2
0.0.0.0 172.30.0.2 0.0.0.0 UG 4 0 0 eth3
Then all is well (can ping local hosts including the gateway router). I do have metric specified in the /etc/network/interfaces file like this:
Code:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 172.30.16.8
netmask 255.255.0.0
network 172.30.0.0
broadcast 172.30.255.255
metric 1
auto eth1
iface eth1 inet static
address 172.30.16.8
netmask 255.255.0.0
network 172.30.0.0
broadcast 172.30.255.255
metric 2
auto eth2
iface eth2 inet static
address 172.30.16.8
netmask 255.255.0.0
network 172.30.0.0
broadcast 172.30.255.255
metric 3
auto eth3
iface eth3 inet static
address 172.30.16.8
netmask 255.255.0.0
network 172.30.0.0
broadcast 172.30.255.255
metric 4
Apparently that metric setting applies only to the gateway route, not the LAN route. Is there a way to specify the LAN route metric, too?
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Jul 14, 2011
Assume I`m a newbie and I want to run two CPU-consuming tasks but with different priorities - I mean one to get more CPU time that the other. How to achieve this in Fedora?
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Jun 27, 2010
Is it possible to prioritize internet resources for a particular application or a set of applications and control their maximum bandwidth, etc ?
I've a download manager and a bittorrent client where I want to prioritize resources for the bittorrent client followed by the download manager but I want them to collectively have a speed less than a manually defined max value since even the other apps need some resources.
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Sep 1, 2011
My laptop was working fine on wireless till the userinterface changed and it defaulted to ethernet and now it won't let me go back on wireless How do i disable ethernet?
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Oct 24, 2010
I have a system with 2G of memory and swap memory of 4G.
This is the output from :
PHP Code:
How could they do to the memory cache to be used as much? Because, occasionally, swap is used and note that the system could use the memory cache does not swap ...
Slackware current 64 multilib.
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Mar 3, 2011
I'm searching for a FREE mertic conversion tool I can download to install on RHEL 5. I looked am not finding what I want (at least on the Linux side)
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May 11, 2015
What measuring system does partitioning step in Debian installer use - metric or JEDEC? I.e. it uses MB, which in JEDEC means 1024^2 bytes, and in metric means 1000^2 bytes.
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Mar 1, 2010
Im trying to make an ubuntu server box my entrypoint to my networking. Meaning itll function as a server, a firewall, and a gateway. so i already installed dhcp3 and a dns server.
I have 2 ethernet cards in it. So now i wonder, should i the second card into a router's modem/wan port and make the router a switch? or should i plug it into one of the routers lan ports?
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Apr 18, 2011
I have a server with two ethernet ports. I configured eth0 to be static, set at 10.1.10.148. I plugged in another router into the other ethernet port in order to configure that router. I configured eth1 to use dhcp. Using /etc/network/interfaces rather than gnome network manager. When I did this, I lost internet connectivity (internet routes through eth0 of course)
- Why did I lose internet connectivity?
In order to recover internet activity, I had to disconnect the new router on eth1 of course, and do sudo ifdown eth1. That wasn't enough however. After rebooting numerous times and pulling out my hair, I finally tried configuring eth0 as dhcp, rather than static, and this fixed the problem.
- Why didn't sudo ifdown eth1 solve the problem? What information was saved between reboots that somehow remembered that I plugged in the new router? Because my thinking was if /etc/network/interfaces was identical, and the network topology was identical, after a reboot everything should be restored, but it wasn't.
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Feb 8, 2011
I am basically wanting to use my Ubuntu 10.10 computer as a router. Note: Before you say just get a router please note that I am poor/cheap. I have two ethernet connections and one wireless connection on my netbook. I want to share the internet connection that is going into one of the ethernet cards through the other ethernet card and the wireless card.
DSL-->1sr Eth --> 2nd Eth (currently works)
DSL-->1sr Eth --> Wireless Card (Adhoc) <--(connects with limited connectivity AKA no internet)
The 2nd Ethernet card already has working internet, but when I connect to the Wireless card (through an Adhoc network), it cannot get an IP (I believe).
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Aug 11, 2010
I have learned how to create an Ethernet over GRE tunnel using the following command example :"ip add link eth1 type gretap remote a.b.c.d local w.x.y.z" (available since 2.6.28). (1) Is there a corresponding RFC ? I cannot find any standard e.g. RFC which this conforms to, for example RFC 1701, 1702, etc. (2) Do standard routers (e.g. Cisco, Juniper) terminate this protocol or is it strictly Linux-to-Linux? If so, can someone identify the command line syntax or topic to search for, i.e. what do the vendors call it?
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Jul 26, 2009
I just installed a fresh copy of Fedora 11 x64 on my Dell XPS M1530. Last week I purchased a NAS device and backed up my entire Fedora 9 x86 system on it. I have an NFS mount that I'm restoring my data from.
The first thing I noticed after installing is that downloading of very large files (several MB to several GB) over my wired network is extremely slow. What I'm seeing is that it will download 3 - 5MB then pause for several seconds and download another few MB and so on. If I download a lot of small files from the NAS device it works fine and very fast. If I upload large files to the NAS they upload fast. If I boot into Vista and download large files from the NAS it is fast. If I use my wifi card to download large files from the NAS it downloads OK (not too fast but it is wifi so naturally slower).
In Fedora 9 I did not have this issue. I'm not sure if the issue is specific to NFS or if it is will all large files via the ethernet port (I don't have a way to test at the moment). lspci says 09:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8040 PCI-E Fast Ethernet Controller (rev 12). dmesg doesn't indicate any issues.
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Jul 29, 2010
I can't figure this out for the life of me. I am new to Linux too. Wireless works fine. I plug my Ethernet in and turn off wireless and I cant surf the web, download, etc...Network Manager finds the wired network under eth0 and it works perfect on my non-linux desktop (nervous to even mention Vista around here). Firewall was set up with basic setup (I didn't make any changes). I have a Sony vaio VPCCW21FX with fedora 13. Can anyone point me in the right direction?
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Oct 28, 2010
After installing fedora 13(x86_64) in my new acer aspire timelinex 4820T laptop , I have seen that the ethernet is not working. Network manager shows that "no network devices available".
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Nov 3, 2010
I have been learning linux for a year on ubuntu. well, it has been nice but I want a yum centric distro because I really need to learn redhat. anyway, I downloaded the 64bit fedora 14 and I neither get a dhcp or can get ethernet working manually. I can manually assign an address gateway and dns but I cannot ping the gateway, it has been the same address for 5 years so I am certain I am putting the correct settings in (plus I get no ethernet light on the linksys router). I am thus reluctant to wipe clean and move to fedora.I am not sure how to determine my card so I am including this dmesg info for you smart people. Btw ubuntu 10.10 had issues with the ethernet too, I had to use the kernel from 10.04 until a few days ago, after which a software update (of I don't know what) seemed to solve the issue. Are people not responding because I mentioned ubuntu?
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Jan 5, 2011
Currently I am working at a college as a student worker, and one of the classes that needs to take place requires that Fedora 12 be installed. Now, this isn't greatly important, but so far on a few of the installs I cannot get the Ethernet device to actually become active. I've tried restarting the computer, reinstalling Fedora 12, and going into the actual network area to click on "Activate" but it is grayed out. So currently, a few machines cannot connect to the internet - including the professor station. I'm not entirely sure what to do here, since most other posts I have read reported that they were able to actually click on "Activate" and it would work.
Right now, the computers are connected to the internet. The jacks do work as they were tested with computers that are able to connect to the net themselves. These computers NICs do work too as we have separate hard-drives in them booting into XP, which do connect to the net without problem.Any help would be appreciated. If anymore information is required, please let me know. I'll do my best to provide you with this information.
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Jun 4, 2011
have used f14 since it came out with no problems, little niggles and whatnot have been sorted by reading these forums and googling but I'm now out of my depth.problems started when I installed f15 from disc and no ethernet or wireless was useable. Inserting wire leads to it announcing it's unplugged again a few mins later and trying to connect wireless never resolves.I thought it was a quirk and would go back to f14 for a few weeks but after re-installing that was now the same. So I tried live discs of crunchbang and debian6 -same. However puppy linux sees the ethernet fine.So my question is how do I enable ethernet and/or wireless in f15 (installed again after checking with puppy)?
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Apr 4, 2010
how to use a ethernet conenction(Marvell Yukon 88E8039 PCI-E Fast Ethernet Controller )in ubuntu...my internet requires user name and password ..can u even tell me how to config the user name and password
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May 11, 2010
I installed 10.04 today, and I can't get any connection through the LAN. I've tried some stuff on my own, but I've been unsuccessful so far. It's not a hardware or connection issue, as it works perfectly fine in Windows 7. I haven't had this issue in any previous version of Ubuntu (or any Linux distro for that matter).The weirdest part is I booted from the installation CD as as LiveCD, and everything worked perfectly fine. It only stops working after I actually install it. Here's the results of ifconfig:
eth0 Link encap:Ethernet HWaddr 00:17:31:d8:d5:76
inet6 addr: fe80::217:31ff:fed8:d576/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
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Jun 5, 2010
i was instelling ubuntu 8.10 on my laptop type HP (nx6110) but the Ethernet and the wireless are not work. i was used the nm-tool on terminal the code is
zaid@zaid-laptop:~$ nm-tool
NetworkManager Tool
State: disconnected
- Device: eth0 ----------------------------------------------------------------
Type: Wired
[Code]....
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Jul 9, 2010
I just installed 10.04 on a Dell C800 and I've been trying to connect to the internet via Ethernet with no avail. I did some searching and ran lspci -nn and got this:
user@user-desktop:~$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation 82815 815 Chipset Host Bridge and Memory Controller Hub [8086:1130] (rev 02)
[code]....
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Sep 11, 2010
Since it seems that it will take a while for Linux to get reliable wireless, I've been looking at that Ethernet AC Outlet as a possible solution. I'm hoping it's an all hardware solution (my ethernet works fine). However the vendors, if they list any OS at all, never list Linux.Has anyone had any experience with these?
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Oct 17, 2010
I have been using Ubuntu for quite a while now (~3 years.) I recently installed 10.10 on an HP Mini 1000. The installation went fine, but now I am puzzling over how to connect to the internet. When I plug an ethernet cable into the netbook, the port light lights up, but the system does absolutely nothing. Under the connections menu on the top panel, it just says disconnected. Also, the wireless connection section states that the device is not ready because firmware is not installed. Most solutions I see for problems of this kind are to download the drivers, but I cannot do that because neither connection works.
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Apr 1, 2011
I have a dual boot netbook (Acer Aspire One D255) with Mint and Ubuntu 10.4. Using Mint, I was able to connect via the ethernet and install all updates including wireless driver.
In Ubuntu 10.4, regardless of what I do, I cannot connect via ethernet cable at home and at work.
How can I locate the right wireless driver? In the past, I have always been able to simply plug in the ethernet cable and get the necessary updates.
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Jul 13, 2011
i'm a beginner with ubuntu and i installed 11.04 yesterday (so not yet familiar with the new desktop configuration). Also, I have the french version so i'll do my best to translate the terms in english. I have a major problem: i can't connect to internet by ethernet cable or by wireless. The network icon is always empty. It doesn't detect the ethernet cable and the wireless networks around. I've tried different things i found on forums. I'v reinstalled the b43 package and rebooted. At the beginning i was only having problem with the wireless; i could connect via ethernet. But on one forum, a dude suggested the command
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Sep 1, 2011
In 10.04 I get the following error in the log while connecting to ethernet:
Code:
Aug 24 17:33:24 Linux dnsmasq[11069]: started, version 2.52 cachesize 150
Aug 24 17:33:24 Linux dnsmasq[11069]: compile time options: IPv6 GNU-getopt DBus I18N DHCP TFTP
Aug 24 17:33:24 Linux dnsmasq-dhcp[11069]: DHCP, IP range 10.42.43.10 -- 10.42.43.100, lease time 1h
Aug 24 17:33:24 Linux dnsmasq[11069]: no servers found in /etc/resolv.conf, will retry
Aug 24 17:33:24 Linux dnsmasq[11069]: cleared cache /etc/resolv.conf only has "Generated by NetworkManager" comment, so is this a bug in Networkmanager?
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Jun 4, 2010
I want to set up an ethernet interface using C language in Linux. Currently it is being done by :
system("/sbin/ifconfig eth1 192.168.0.29 up");
But I dont want to use the system call. Kindly suggest me any other way to do it..
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Jun 8, 2010
I have a usb device that is setup to use a networking interface. When I connect the usb device, ifconfig automatically shows a new interface "usbX", and it has an assigned IP address, e.g. "192.168.X.1" - yes, the "X" is the same number between the address and the interface name. Each time I connect the usb device, it gets a different ip address...
192.168.9.1, 192.168.10.1, etc (actually the device address ends in .2, the PC is .1)
How do I configure this device to always have the same address? Or maybe it's more accurate to ask, how do I configure linux to always assign the network address with this device?
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