similar to: Network isolation - PCI passthrough question

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Hello list, Please don''t shoot me. I know I''m doing something with bonding that bonding wasn''t made for. I just want to give it a try. I want a simple mechanism to have a failover on a 24Mbit line to a 2Mbit line in case the 24Mbit line goes down. Between A and B there are two lines: a 24Mbit and a 2Mbit. I use two OpenVPN tunnels with tap devices: +-- tap0 (A)---

Hi all. I would need to use a single physical interface on a Linux box to manage two different IP addresses (belonging to two separate logical subnets) with two different MAC address. (I need to emulate te presence of two separate physical interfaceses for a PC on the same LAN, at layer 2 and layer 3). Is it possible to use the linux ethernet bridging code and two tap interfaces for this

Good day, I have gone through a couple of the HOWTO''s on how to get this to work, but I am still sitting with a very strange (for me) issue. If two clients connect via OpenVPN (bridged), they can access each other without any problems, but neither of them can access the server, nor any system behind it. I am fairly sure it is a Shorewall issue, but I am very new to Shorewall, having

Hello, I''m facing a strange issue with network card PCI passthrough on my openwrt test domU. - With network PCI passthrough, DNS lookup failed for some domains (exemple, google.com) but not for other (free.fr my ISP, or my domain jbfavre.org). I can ping an IP address without any problem. - Starting domU as a "normal" (ie without PCI passthrough), no problem. As far as I can

Hi all, could somebody point me to what is considered a sound way to offer Xen guests on a two node DRBD cluster in combination with Pacemaker? I prefer block devices over images for the DomU''s. I understand that for live migration DRBD 8.3 is needed, but I''m not sure as to what kind of resource agents/technologies are advised (LVM,cLVM, ...) and what kind of DRBD config

Hello everyone, I''ve managed to configure and start Remus. However, it works only while the protected server is not loaded. As soon as I start a memory-intensive server application, the stream of Remus messages stops, leaving me with an error message. I think the message is not always the same, but here is what I''ve got from the last run: PROF: suspending at

I am trying to setup Xen virtual servers using a Debian etch with the xen 3.0.3 provided in 32 bits mode. I am using full virtualization. I managed to get things started using the configuration provided below. I was able to run the install (with boot="d"). I even managed to start the system afterwards, and it runs correctly. But now I encounter a problem I already hit when running

No i can start qemu but no network I have a bridge br0 with ta0 on it My start line qemu debian.5-0.x86.20100901.qcow --curses -net nic -net tap,ifname=tap0,script=no

Hi Tinc Mailing-Group, Having set up the kernel correctly, and got tinc running successfully, I am now trying to get two VPNs running at once. Hence I need to have two ethertap devices ( /dev/tap0 and /dev/tap1 ). The first tap0 device was created thus: mknod -m 600 /dev/tap0 c 36 16 chown 0.0 /dev/tap0 The second tap1 device was created too: mknod -m 600 /dev/tap1 c 36 17 chown 0.0 /dev/tap1

How does the libvirt deal with the vnet mac address? Greetings, if I establish a network for the VM (hypervisor is KVM) using bridge in the virt-manager , a vnet0 device is created . There are some relationships about mac address between the vnet0 device in the hypervisor and the ethX device in the VM, for example : the mac address of vnet0 is FE:54:00:84:E3:62 the mac address of ethX in the VM

Hi Guys, I want to create multiple virtual interfaces on a system running linux 2.6. The main requirment being, to assign unique MAC address fo each of the virtual interfaces. I need to know, if this is possible and will really appriciate if someone can provide me pointer in this direction. Thanks a lot. R. Singh _______________________________________________ LARTC mailing list

Hello. I am trying to get multi paths running, i.e I want to specify 2 paths from a particular node to another. To test this, I am setting up the following scenario: I create 2 tap devices tap0 = 10.1.1.1/32 netmask 255.255.255.0 tap1 = 10.2.2.2/32 netmask 255.255.255.0 I then issue the route command: ip route add 10.3.3.3/32 nexthop via 10.1.1.2 nexthop via 10.2.2.3 The route table

inquiry about differences between the tap and the vnet in the virt-manager Greetings! I encounter a problem about the network when using virt-manager to create and run a VM. when I want to establish a network bridge for the guest OS, I generally use two kinds of ways described as fellow : First method : create a bridge with the help of linux commad: brctl, or Second method : using

Ok. I''m knocking down one problem at a time. I''ve managed to figure out how to bridge my tap0 and my eth1 with br0. This is good stuff. But if I have shorewall running, I can''t ping the local network at all. If I have shorewall not running, I can ping the local network. Here is my setup. Firewall/NAT box: eth0 - DHCP from cable provider eth1 -

Hello everybody, I''m playing with Xen and trying to extend DomU disk space. My Configuration: Dom0: all Xen machine are HVM. They''re installed on LVM. I''ve one VG (XEN) on Dom0 and created a LV (here, xps.101.disk) per DomU. disk configuration in xen conf is as follow: disk = [ ''phy:/dev/XEN/xps.%d.disk,ioemu:hda,w'' % (vmid)

Here is the scenario: I have one server with kernel 2.4.24 with a bridge br0 made of 2 interfaces, eth0 and tap0 (the last is an OpenVPN tunnel), and one remote computer connetting through tap0. If I assign a static IP to the remote computer, the bridge works perfecly (so I think the problem is not OpenVPN-related). If I start a DHCPd on the server and I configure the remote client to get the

Hello, I successfully set up a tunnel with tinc using the tun interface. however I need a tap device, because I need to run the OLSR routing protocol on the tunnel and if I use the tun mode OLSR will just skip the interface. (It is a well known thing, I had this issue before also when using OpenVPN in the past). The problem is that I cannot make tinc use a tap device. I created the tap0

I have centos 64 6.5 I installed bridge-utils I installed tunctl I added BRIDGE=br0 to ifcfg-eth0 I created ifcfg-br0 with correct settings I did service network restart and I get an error about br0 not present. When I plug in the second network (USB to ethernet) It detects as eth1 What do I need to change to get this to work. Thanks, jerry

I'm currently running Openvpn on a multi-homed linux server. The bridge device br0 comprises the tap0 virtual device and the physical eth0 device. Eth0 is wired to the local LAN. Remote clients dial into the server's external interface eth1's udp port 1194. This works but when the number of clients increases (over 12), we see lots of dropped packets and lost connections. We look at