Hello

I am trying to install KVM based VMs on my machine. First Timer...little idea on actually configuring related networking related issues. Am planning to follow this howto: http://www.howtoforge.com/virtualization-with-kvm-on-a-centos-6.3-server

My trial machine is a server cum desktop with two network ports..eth0 is normally used for LAN & Internet access...eth1 is reserved for use with LTSP which is to be configured later. I need my VMs to be reachable from the internet by ssh & vnc etc. required ports will be forwarded from the Internet router.

I propose to use subnet 10.0.1.0/24 for my virtual machines. Can someone please advise the content of bridge configuration file at /etc/sysconfig/network-scripts/ifcfg-br0, as given in the howto? The two bridges ltspbr0 & virbr0 shown below, are created by packages installed & not by me, so if any modifications are required in them...I need to know. Also, please advise if it is possible to get the VMs to use a 3G usb device for Internet access through the host machine Network Manage, in case Internet access through eth0 is down? Though this is not a priority at this stage, as I am just learning to use my first VM, but I'd like this feature if it is not too difficult.

With regards. Sanjay.

ifconfig output:

[root@Swayam ~]# ifconfig eth0 Link encap:Ethernet HWaddr E0:69:95:77:A7:F3 inet addr:10.0.0.101 Bcast:10.0.0.255 Mask:255.255.255.0 inet6 addr: fe80::e269:95ff:fe77:a7f3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5120 errors:0 dropped:0 overruns:0 frame:0 TX packets:5506 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4205139 (4.0 MiB) TX bytes:684760 (668.7 KiB) Interrupt:20 Memory:fe600000-fe620000

eth1 Link encap:Ethernet HWaddr 00:60:52:0C:0B:DE UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:16

lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:155 errors:0 dropped:0 overruns:0 frame:0 TX packets:155 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:59335 (57.9 KiB) TX bytes:59335 (57.9 KiB)

ltspbr0 Link encap:Ethernet HWaddr AE:41:A9:3D:FE:A3 inet addr:172.31.100.254 Bcast:172.31.100.255 Mask:255.255.255.0 inet6 addr: fe80::ac41:a9ff:fe3d:fea3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:73 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:14407 (14.0 KiB)

virbr0 Link encap:Ethernet HWaddr 52:54:00:86:BD:15 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:45 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:11636 (11.3 KiB)