1
vote
1answer
69 views

All connections to a bridged domU originate from the dom0 public IP instead of real IP

I have a Dom0 with a mixed configuration: bridged networking and NAT is set up. There is one NIC connected to the internet (& 3 more that are unused). This is my interfaces file: # The primary ...
2
votes
2answers
442 views

xen creating a new virtual machine with bridge networking

I am using CentOS 6.5 64 use this tutorial to setup Bridge [root@CentOS ~]# brctl show bridge name bridge id STP enabled interfaces xenbr0 8000.08002754b3fa yes ...
0
votes
1answer
68 views

How to use the same IP for dom0 and one domU in XEN

I have currently a Xen on a debian wheezy dom0. I have 6 (public) ips and I would like to setup 6 VMs (each using one IP). To keep access to dom0, I'd like dom0 ssh to bind on one IP port (lets say ...
0
votes
1answer
279 views

Xen dom0 bridge interface drops a lot of RX packets?

I'm running Gentoo Hardened as Dom0. It also acts as a router/NAT. There's a bridge interface called br0 which contains a pci-e wlan card, ethernet nic & domU. bridge name bridge id ...
0
votes
2answers
209 views

Setting Up Xen and Network Bridge on Debian 7

Setting up Xen and Network Bridges on Debian 7 Hi there. So i am finally going to try out some virtualisation on my new dedicated machine, however i am having some problems / confusion on setting it ...
0
votes
0answers
80 views

Xen domU networking problems

I can't ping or access my domU from LAN. Here's whats working dom0<-->domU domU->Internet dom0 has bridged interface called br0. It contains eth0, wlan0 and vif3.0 (which belongs to the domU). ...
0
votes
0answers
37 views

OpenVPN Bridged VMs

I have two servers. One contains few VPS which acquire IP via OpenVPN bridge from another server. So setup looks like this: Internet -> (ServerA.br0 -> ServerA.tap0) -> (ServerB.tap0 -> ...
0
votes
2answers
276 views

Blocking STP Traffic

I am using Xen virtualization with a bridged mode netwrk. I noticed that there is a lot of spanning tree (as understand) traffic coming from a network. Such as: STP 802.1d, Config, Flags [none], ...
0
votes
0answers
66 views

Linux networking: issues with connection loss using xen virtualised xen guests (?)

I am encountering strange issue. I've several xen virtual machines deployed at HP Proliant Servers (120,360,380 gen5,6,7 - different). Some of them are PVM XEN running linux guest, some of them ...
0
votes
1answer
383 views

Xen dom0 not forwarding to domU over bridge

My setup is about as basic as you can get. I have 2 interfaces on dom0 (Debian Squeeze), eth0 and eth1. I created a bridge for eth1 to forward packets to domU that has a public IP address. I can ...
0
votes
2answers
945 views

IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready & IPv6: ADDRCONF(NETDEV_UP): xenbr2: link is not ready on Ubuntu Server - Xen bridge

Hi all, I am having some problems getting a Xen bridge up in Ubuntu precise with Xen. I created a first bridge on eth1 with no problems, but the exact same process for eth2 yields the following ...
1
vote
2answers
194 views

Xen Networking - Separating Dom0 from DomU

I'm having some issues regarding Xen Networking and I was wondering if you could point me in the right direction. I have a server with 2 NICS (Xen over Ubuntu Server - Xen Bridge scripts) Each NIC ...
1
vote
1answer
155 views

Changing the mac address in a libvirt xml config file breaks network connectivity for the guest

I'm using Xen with libvirt and trying to set it up on a bridged interface. I am able to install an OS and everything works as I would expect. If I save the xml output from "virsh dumpxml guest", edit ...
1
vote
1answer
139 views

Network traffic is not being forwarded from a VM to the network using a bridged interface with Xen + libvirt

I'm having trouble getting network access from a VM that I'm running using Xen and libvirt. I've been trying different things and reading similar posts online for a couple of days but I'm really stuck ...
0
votes
1answer
236 views

Xen guest - cannot get network connection beyond the host

I've just installed a XenServer 6.1. It came with a standard configuration: network 0 connected to NIC 0. I created a VM but I can't reach any network beyond the host. From the VM (172.18.32.20), I ...
0
votes
1answer
337 views

Xen: can't get Dom0 and the DomUs to ping eachother

We have installed a Xen (4.1) configuration and can't get Dom0 and the DomUs to communicate (ping eachother). The DomUs are able to ping eachother but not Dom0, and Dom0 cannot ping the DomUs. We ...
1
vote
2answers
218 views

Is there a way to create virtual network between vm on xen with out creating shared bridge with n/w interface

xen 4.1.2 is running with ubuntu 12.04 as dom0. I need to enable networking between vm only(which means not creating a bridge between Ethernet card and sharing among vm). when i installed ...
3
votes
1answer
512 views

Network Bridge in dom0 can not ping domU's

I am using Debian wheezy with XEN 4.1. I have two network bridges xenbr0 and xenbr1. xenbr0 is linked to the real-eth0-nic so the domU's can talk to the outside world, which worked fine. xenbr1 was ...
2
votes
1answer
150 views

Access to WAN from one VLAN

i want to create a VLAN for 3 guest VMs. I already have it and every VM can ping each other, but the problem is that any guest CAN NOT have access to Internet Network configuration in Host machine # ...
-1
votes
1answer
440 views

Bridge Networking in XEN other than Default xenbr0

i need to create a bridge with public ip for assigning public ip to VM. But how can i create a Network bridge,as there is a default "xenbr0" bridge exists. Editing Xenbr0 is not permanent,how can i ...
2
votes
1answer
328 views

xen and libvirt bridge configuration

I have a Centos 5.5 server with Xen 3.2 and libvirt for virt-manager installed. Before installed libvirt I have the bridge configuration just like the documentation on Xen says: xenbr0, eth0 and ...
1
vote
1answer
553 views

Adding vifs to bridge under Xen suddenly stops working

We have a setup here with around 30 Dom0s running Xen 4.0.3 with a Dom0 Kernel of 2.6.32.57 x86_64. (We have seen the same behaviour with Xen 4.0.1 and kernel 2.6.32.2X earlier) Sometimes all of a ...
2
votes
1answer
392 views

Xen HVM Windows 2008 network bridge

I have a problem with the Windows Server 2008 guest (hvm). I can't get a network interface running for him. I also have a Debian guest and it's working ok, but I can't do it with the Win2k8 guest. ...
1
vote
2answers
411 views

Bridging with aliased Ethernet card for Virtualizing with single Ethernet card

We are having a server with good CPU and RAM,so we are planning to do XEN virtualization on ubuntu 12.04 server to handle high traffic. The plan is to keep the host machine only to manage VMs(no NAT ...
0
votes
1answer
153 views

xen-4 single nic dom0, add second bridge

im running xen4, my dom0 is debian6 It has a single nic and im having hard problems creating a second bridge to have two virtual nics inside my guest. i tought on using dummy dev, but i had read ...
0
votes
1answer
986 views

xen network-bridge makes my server unreachable

Hey, I have a problem with xen networking. I'm using centos 5.5 64bit, and have installed xen 3.4 from gitco (unofficial) repository, along with libvirt and xen-tools. I got it previously working on ...
1
vote
1answer
1k views

How to use two physical NIC's inside a Xen guest?

I'm trying to make two physical interfaces visible to a Xen machine. I followed the guide (http://idolinux.blogspot.com/2008/08/xen-add-network-bridge-for-eth1.html), and created two Xen bridges for ...
1
vote
2answers
875 views

Xen domU needs to be on different network (vlan) than dom0

We have multiple VLANs setup between different sites, and are using them to connect our dev. network, 192.168.3.x, and a management network, 172.16.20.x. I have a Xen dom0 on 192.168.3.x; one of it's ...
0
votes
1answer
161 views

Xen need to realize 2 lan interfaces 1 - for Lan between domU and 2 - Internet

Anyone know how to realize lan between domU machines at one interface and actually global net at another interface? I reading wiki about routing and bridging and unable to fully understand it ...
0
votes
0answers
315 views

Xen bridge networking without DHCP

I'm totally new to virtualization and have a problem. My virtual machine fails to access internet cause DHCP isn't available. When I try to assign it an IP it also fails, probably because I need to ...
0
votes
2answers
305 views

Xen Bridge only working when IP Assigned

Just had an (in my sense) obscure situation. I have a Xen Server with bridged networking. Everything works fine since month. A while ago i configuresd a second bridge. only some DomUs get an channel ...
0
votes
1answer
982 views

eth1 doesn't come up at boot on dom0

I am trying to install Xen 3.2 on Debian Lenny on a server with 2 NICs, one connected to the private LAN and the other to the Internet. This server has been in operation in a non-Xen state for a while ...
2
votes
3answers
3k views

debian lenny xen bridge networking problem

DomU isn't talking to the world, but it talks to Dom0. Here are the tests that I made: Dom0 (external networking is working): ping 188.40.96.238 #Which is Domu's ip PING 188.40.96.238 ...
1
vote
2answers
1k views

Xen network-bridge interface renaming

According to the comments in Xen's network-bridge script, the process of starting the bridge with external interface eth0 is thus: # Creates the bridge # Copies the IP and MAC addresses from eth0 to ...
0
votes
1answer
640 views

Xen 3.2 on Lenny network bridge broken

I've upgraded recently a server of mine that was running Debian Etch as Xen Dom0 to Lenny. Now the Ubuntu DomU machine running on it has lost all network connectivity except with the Dom0. I use ...
2
votes
3answers
536 views

Constantly varying download rate with a complex xen networking setup, why?

The network configuration in my Xen setup is the following: the dom0 has 3 network cards (eth0, eth1, eth2), 3 brigdes (xenbrE, xenbrI, xenbrD) and each brigde integrates the corresponding network ...