Ubuntu Installation :: Bonding Multiple Wireless NICs?
Nov 20, 2010
I have an Asus R1F laptop with a build in wireless card. I also have 2 USB dongles that we used to use old desktop machines. All of the cards work fine in Ubuntu. I'm running Ubuntu 10.10, 2.6.35-22-generic-pae.
The problem is that I have really bad signal on my side of the house and the connection is dropped quite often. I've tried just connecting on the devices at the same time, they all connect fine but nothing actually works. I read about bonding interface cards on this blog and that would solve all my problems - if a usb dongle could act as a backup for when the normal connection is dropped and while it is reconnecting.
I tried what was written and also did some Googling, but every way that I try seems to work fine until 2 wireless devices are bonded. When that happens they both disconnect and reconnect like crazy. This happens both with and without network manager running.
Build in card[wlan0]: Intel PRO/Wireless 3945ABG
USB[wlan1]: Cisco LinkSys Compact Wireless-G USB Adapter
USB[wlan2]: Realtek RTL 818713 WLAN Adapter
I load the module:
Code:
modprobe bonding mode=1 miimon=100 downdelay=200 updelay=200
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Aug 3, 2010
I am currently investigating channel bonding for rhel5.5.Is there any way I can create one bond from nics on two different linux machines.They will be a cluster without any clustering software like beowulf or LVS.There will be a cluster interconnect through which they can communicate.Should I tweak the bonding module??
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Mar 15, 2011
I am trying to get preseed working on a bunch of machines with multiple NICs but it doesn't pick the right interface and/or gets "no link" on all interfaces. My PXE kernel line looks like so (I have auto=true priority=critical and interface=auto)
label squeeze
kernel debian-installer/squeeze/i386/linux
append vga=788 initrd=debian-installer/squeeze/i386/initrd.gz auto=true priority=critical ramdisk_size=10800 root=/dev/rd/0 rw url=example.com/d-i/squeeze/preseed.cfg interface=auto netcfg/dhcp_timeout=60
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Aug 5, 2010
On my computer i have 1 network card and 1 USB modem for Mobile Internet. I can access internet using both devices, but when i am using the network card i am unable to listen to radio stations because the radio streaming is not allowed at the work place. So, i am triyng to find a solution and the solution seems to be to use the bonding module on linux. But i have a few question:
1) i don't know if it is possible to use this module for 2 such different devices
2) i don't know if, even enabling bonding, i will be able to "select" the right path in order to reach the radio streaming , or if the right path is selected automatically. When i connect to the radio station using the network card, it opens the connection, but it closes it imediately and i am not sure that the kernel is clever enough to use the other connection in this case.
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May 20, 2010
I have an old pentium 3 computer that has ~7 NICs installed. These NICs are attached to modems and other networking equipment. According to the linux ping page on computerhope.com, it seems that one could send a ping from a certain specified NIC. How would one go about this?
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Jun 16, 2009
I have a CentOS 5.3 box with three network interfaces in it. Each interface is attached to a separate VLAN and I want traffic to stay on each network segment.What I can�t figure out is why I cannot get each interface to have its own gateway and everything gets sent through the default gateway.The basically takes my possible 3Gb total bandwidth and throws it down a single 1Gb pipe.Then on top of that, if I take down the interface (ifdown) that has the current default gateway,I loose contact to the other two interfaces.When I look at the routes, each one of the interfaces shows the gw as 0.0.0.0 and defers to the default route. So I delete the route and try to add a new route with:
[root@testsan ~]# ip route add 10.1.15.0/24 via 10.1.15.1 dev eth2
but end up with the error:
RTNETLINK answers: Network is unreachable
[root@testsan sysconfig]# cat network
NETWORKING=yes
NETWORKING_IPV6=no[code].....
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May 27, 2010
I have 4 DSL modems connected with 4 different ISP's my scenario is
a) My FC-2 machine with LAN IP=192.168.10.1 and Bond0 IP=192.168.1.1
b) Modem-A LAN IP= 192.168.1.2 , ext IP=xxx.xxx.xxx.xxx
c) Modem-B LAN IP=192.168.1.3, ext IP=xxx.xxx.xxx.xxx
d) Modem-C LAN IP=192.168.1.4, ext IP=xxx.xxx.xxx.xxx
e) Modem-D LAN IP=192.168.1.5, ext IP=xxx.xxx.xxx.xxx
Modem-A, B, C, and D LAN connected with my FC-2 machine, and all 4 interfaces of my machine are in Bond0, Now please help me what default Gateway I should set in my FC-2 machine?>??? or I have to set 4 gateways in my machine?and will this configuration works?
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Apr 22, 2011
I have an Ubuntu server box with multiple NICs. I'd like to specify that all traffic bound for a certain IP range goes through one NIC, and everything else goes through the other. Does anyone know how to do that? I'm not a total newbie, but I'm also not a linux guru (but usually can google my way to a solution...usually).
ETA: Source and destination IP for routing.We have 1 NIC with a public IP, all public IP's should talk to it.Another NIC with a private IP, all private traffic should talk to this.In practice, I have some devices on a different subnet of the public IP range we have that will only talk to the private IP.
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Mar 30, 2009
I have a motherboard which has 4 x 1Gbps Ethernet controllers. I would like to use it as a Gateway for my home network. I have a static IP from my ISP which I can use to configure eth0 (I haven't done it yet as the LE-565 is currently sitting behind my Netgear router until I've got DHCP working). I would like to use eth1, eth2 and eth3 for my LAN. How do I set things up so that DHCP is handing out IP addresses on the same subnet (192.168.0.0/24) on all three interfaces?
P.S. I think what I'm asking is: how do I combine all 3 interfaces to behave like a switch (ie. just like my Netgear router)?
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Dec 7, 2009
I have a program that attaches to an interface. I can run two copies of the program on two systems (each running one instance), connect it to a switch, say 1.1.1.1 & 1.1.2.1. In this configuration two instances of the program can communicate and everything is fine.Now, to reduce cost, it want to use only one system with two nics connected to the same switch, running two instances of the above program, each instance attached to two interfaces respectively on the system. I have the following settings:
eth1 Link encap:Ethernet HWaddr XXXXXXXXXXXXXXX
inet addr:1.1.1.1 Bcast:1.1.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
However I cannot ping one from the other.
Neither "ping -I eth1 1.1.2.1" nor "ping -I eth2 1.1.1.1" works.
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Dec 8, 2009
I have a program that attaches to an interface. I can run two copies of the program on two systems (each running one instance), connect it to a switch, say 1.1.1.1 & 1.1.2.1. In this configuration two instances of the program can communicate and everything is fine.
Now, to reduce cost, it want to use only one system with two nics connected to the same switch, running two instances of the above program, each instance attached to two interfaces respectively on the system. I have the following settings:
eth1 Link encap:Ethernet HWaddr XXXXXXXXXXXXXXX
inet addr:1.1.1.1 Bcast:1.1.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth2 Link encap:Ethernet HWaddr XXXXXXXXXXXXXXX
inet addr:1.1.2.1 Bcast:1.1.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
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Apr 7, 2010
I had two potential converts to Fedora this week, but had to go windows because I could not demonstrate how the Internet worked with the Live CD. In both cases networking did not catch the wireless card. In one instance I just ignored what card that was, but the other, I wrote it down: Lenovo p/n 42T0865 Intel 802.11 Kedron Am I doomed to failing with wireless NICs on the live CD? Any suggestions?
p.s it is hard enough to get people to switch due to that lack of applications (usually Quick Books, Acrobat Professional, various tax software, UPS World Ship, FedEx Ship, various business-to-business web sites that only support IE), without the Live CD failing to demonstrate how well Linux works.
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Jul 9, 2010
I want to connect my modem straight to my fedora 13 box, using it as a firewall, and I want to use my wireless card to set up an ad-hoc to give internet to the windows computers in my house. My router has been messing up and I am trying to create a quick fix until I can solve the problem.
My eth0 has internet connectivity but when I use the brctl command to try to create a bridge it doesn't let me add my wireless card, wlan0, and also I lose internet while my eth0 is in a bridge. I am fairly new to Linux.
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May 10, 2010
Is it possible to install two NICs during an installation from CD? I tried and failed yesterday. The eth0 would have a static ip address 192.168.0.11 and would be used for Internet/network whereas eth1 would have a static ip address of 192.168.2.81 and would be used for connection to the ISCSI system (DROBOPRO). Oh yes, it's Ubuntu 10.04 Server version.
Install asks me to choose one of the two devices for configuration - I tried to be clever and set up one then the other but it didn't work, although the ISCSI subsystem was clearly working when I set up eth1 because the DROBO kicked into life as soon as I entered the IP address - communication was taking place. Thinking that my fudge had worked, I continued to complete the installation only to find that neither network interface worked on reboot.
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Aug 18, 2010
I have a clean installation of Ubuntu Server 10.04 x64 on an HP Proliant DL380 G3. It has two Broadcom NICs in addition to its ILO. During the installation, both NICs were listed... but neither was able to pull DHCP, nor did they function with manual settings. The first NIC is currently connected and is known good. So I left it alone and figured I'd troubleshoot it later (which is now). This server is going to be a VMware Server host. I wanted to install ESXi on it, but it doesn't like the old server's cheap ICH RAID controller.
[Code]...
I noticed here it says they're disabled. so I thought perhaps this was a 64-bit driver issue. So, I booted my trusty Ubuntu desktop 10.04 32-bit live cd, and the NIC works fine. Now, here's where it gets weird. Seeing that, I booted it to Ubuntu server 10.04 32-bit installation from a flash drive, expecting to see the NICs working fine during the installation.
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Feb 16, 2010
I've run across a few threads in the archived forums regarding nic bonding. I could be wrong but I imagine most of the people that are looking at bonding are probably really wanting what they would get out of creating a LAG between their Ubuntu Server and a managed switch capable of LACP trunks. If you have two NICS on your ubuntu server and want 2gps throughput & failover check out the page on creating a LAG. Obviously this requires your switch to be compatible though. [URL]...
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Sep 1, 2011
I have 2 Net connection and 2 NIC. I want to know how to make bonding for that. I am using Ubuntu Server Natty 11.04 - 64bit
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Is it possible to make Bonding?
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Mar 26, 2010
I am running FC10, How to NIC bonding ..
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Oct 14, 2010
How to bond NICs in Ubuntu server 10.04/10.10 correctly.
I installed ifenslave-2.6 on a fresh install. Then I tried going into the /etc/network/interfaces file and adding a new entry for bond0 to the file and adding bond-mode 6, bond-miimon 100 and slaves eth1 eth2 to the end of the bond0 config.
That did not work, it keep telling me it cannot bring up the interface even after a reboot it still does not work.
I also followed some tutorial I found online about editing /etc/modprobe.d/aliases
That did not work really well either, the interface came up but had no slaves.
Can anyone give a clue or a current method to bond interfaces in the 10.04/10.10
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Jun 20, 2011
I have a question about bonded NICs and the switches they are connected to.
I have a server which needs to send a lot of data to another server quickly. Both have multiple GbE NICs. I understand what is required at the server end (I think) in that a pseudo-interface is created such as bond0 with the IP applied to that interface rather than eth0 and eth1.
My question relates to the connection between the servers, i.e. the switch. Is a specific type of switch required for this to work, as an IP will have 2 (or more) MAC addresses associated with it, or how does the switch decide to which port to route the traffic for the bond0 IP?
Also, will this only work when multiple connections are being made? What I mean is, will each individual TCP connection only use either the physical eth0 OR the physical eth1 interface, or can a single connection make use of the aggregated bandwidth, sending one packet to one physical interface and another to the other physical interface, using the bond0 IP as the destination?
What I am trying to work out is if I had a storage server connected to an application server and exporting storage using NFS or GlusterFS, would an aggregated link improve throughput?
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Feb 16, 2010
Since I have started to use Ubuntu 9.10, I have had multiple wireless connection troubles. First of all, it says the signal is 2 bars, when in fact my router is right next to me as of right now. Second of all, when I try to connect to it, it asks for my password 3 times, then says disconnected. I'm on a hardwire right now, it's across my keyboard, and I'm in a tangled mess.
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May 27, 2010
I recently purchased a wireless USB dongle. It works great. I am looking to connect multiple computers to that USB dongle. I wanted to know if anyone out there knows if it is possible to link multiple USB cables together like a reverse splitter.
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Jun 9, 2010
I'm attempting to install a new OpenSUSE 11.2 system (64 bit) onto an Intel-based server. I'm having no success in bonding any of my network interfaces into a single 802.ad interface. I'm fairly certain the problem is not the switch as I'm using the same switch (Foundry FastIron SuperX) on which I have an older SLES10-based system that runs with 4 NIC ports bonded together in this fashion (as well as a number of W2K3 systems using SLA). I set up the older SLES10 box by editing /etc/sysconfig/network/ifcfg-blah files at the command-line as bonding was not supported by YAST in that version.
Now I understood, perhaps incorrectly, that YAST in OpenSUSE 11.2 permits bonding. So I bowed to the inevitable and from the GUI ran Yast->Network Settings and worked through all the tabs. I faithfully set up all the NIC ports to be switched off for bonding use then added a new Bond0 interface to which slave NIC ports are bonded. Default gateway was set to point to my router via the new Bond0 interface. I ensure that the firewall was off and that the relevant interfaces all pointed to the Firewall Disabled zone. After setting up as required, I rebooted the system and ran a test ping to a few addresses on the network. No joy. I checked the routing table via ip route then netstat -nr and then route all on its own. The routing tables looked as expected each time.
Getting down to first principals I ran ifconfig and again everything looked fine. I checked via modprobe -l bonding just in case there was something fundamental missing. Nope. I assumed that YAST hadn't worked as advertised and jumped online to grep for more info. Firstly I see that the HOWTO is out of date (Bonded Interfaces With Optional VLAN - openSUSE). I also noted that the bonding module option mode no longer supports numbers but upon looking at my ifcfg-bond0 file it contained mode=802.3ad rather than mode=4 so that wasn't it.
On comparison with SLES10 I did notice that config files of the ifcfg-eth-id: XX-XX-XX-XX-XX type were no longer used in Open SUSE 11.2 with only ifcfg-ethX config files. I examined those and also noted that the _nm_name and UNIQUE options were also no longer used. No need for lspci (or the Hardware control panel) when setting up bonding? Example of ifcfg-bond0 file contents (edited for brevity):
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Dec 3, 2010
I just set up NIC bonding in Ubuntu 10.4, following these instructions, and I've got it working except for one problem: Every time I up or down a network device, or every time the system reboots, my routes go all to hell with eth0 and eth1 entries next to my bond0 entries. When the eth0 and eth1 entries show up, my connection is hosed and I have to go in via the maintenance IP to kill each route one at a time, leaving only bond0. Here's how I want my routes to look at all times:
Code:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.87.9.0 0.0.0.0 255.255.255.0 U 0 0 0 bond0
0.0.0.0 10.87.9.1 0.0.0.0 UG 100 0 0 bond0
Here's my /etc/network/interfaces:
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Aug 25, 2010
I have a broadcom wireless card in my laptop and as far as I know, it acts as an USB device. I also have one USB stick wireless device (TL-WN422G - uses ath9k_htc driver) which I want to use at the same time as the first (Broadcom) device.
The problem is, after I load ath9k_htc - iwconfig does not show the new USB device (the TL-WN422G - wlan1 / ath0 / whatever), but only the old one (wlan0 - Broadcom, checked by MAC).
I tried this USB device (TL-WN422G) on my other computer that has PCI wireless card in it, and they both worked just fine together after I pluged it in... I get wlan0 (Ralink) and wlan1 (TL-WN422G). Is it some kind of a problem for the laptop that both devices are recognized as USB? How do I make wlan1 appear on my laptop?
also, my system is fully up to date 2.6.35 kernel (Arch)
edit: I've already downloaded the needed ar9271.fw from linuxwireless.org and I put it into /lib/firmware - something wrong in that?
dmesg gives me this on laptop:
usb 1-5: new high speed USB device using ehci_hcd and address 9
usb 1-5: ath9k_htc: Firmware - ar9271.fw not found
ath9k_hif_usb: probe of 1-5:1.0 failed with error -22
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May 27, 2011
Current: Workstation --> Wireless Router --> Cablemodem --> InternetsIPs:192.168.2.1 --> 192.168.2.5>192.168.1.5 --> 192.168.1.1>{someIP} --> InternetsSo my first link has a Class C of 192.168.2.0. I want to add a different class C also to that firstink of 192.168.3.0. The reason is my LAN traffic will be on 192.168.2.0 and traffic will be on 192.168.3.0.The wireless router can be only set up for one LAN IP, which is 192.168.2.5. Is there some way to set up a vpn or nat or bridge or something else so I can run two class C's to the router and it will pass them along? Router is the Netgear WNDR3700.
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Jan 2, 2011
I'm in a spot where my wireless access is about 200 ft from my computer so I bought a tl-wn721 adapter. I have already gotten the drivers for it but somehow I am still stuck with my wireless adapter built in to my sony vaio sz220 (yeah I know it's old...that's why I run ubuntu). So how do I change wireless adapters? The system does say that the realtek drivers associated with the 721 adapter are in use and enabled but in Win 7 I have much higher signal than what is currently displayed. Usually it's somewhere in the high 80 or 90s. Now it's hard to even get 70 and that's how I know that I'm on my built in adapter. I ran lspci -nn and this was my output. I might just not be searching for the right thing. BTW I'm running 10.04 LTS.
00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub [8086:27a0] (rev 03)
00:01.0 PCI bridge [0604]: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Express Root Port [8086:27a1] (rev 03)
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Like some others I have found people are having problems with network manager from time to time. It seems that wicd is the solution. Will this work with ubuntu 10.04?
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Feb 26, 2009
I installed Fedora 10 and used dynamic IP first. Then I found out that bonding works with static ip only so I switched to static IP. But then, since I have 3 NIC cards, I configured bonding. I need help in these points:
1- steps to follow so that I switch from dynamic to static IP
2- steps to follow so that I configure bonding
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Dec 1, 2009
I'm running 11.2 on a Dell PowerEdge1850. In the normal kernel, bonding is working just fine on the two ethernet ports. When I reboot into the Xen Kernel, I get the following error at boot:
FATAL: Error inserting bonding ... : Unknown symbol in module...
dmesg shows several Unknown symbols. In the end, the module is never loaded.
If I reconfigure the network in Xen to not use bonding, it works fine.
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Apr 14, 2011
I am seeing an issue on a few servers where it doesn't appear all NICs in the 802.3ad lag are all operating at the same level. A few of the servers have two bonds each with two NICs in each bond.I have two NFS servers that each has 1 bond with 3 NICs.All are RHEL5 x64 2.6.18.I think the reason why I see one interface dominating RX and another dominating TX is due to the xmit_hash_policy but there are three hosts that use this particular server for network traffic.That's 3 different physical mac addresses.The layer2 algorithm should be fine in that situation I would think.Would I just be better off with balance-rr?
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