Mike,
Thanks. I will try it..
I have not explained the puspose for this doing this - just to give you an idea I want to create around 200 virtual interfaces and send traffice through all the interfaces simulating traffic comming from different networks. Do you think this approach will scale to that level?
Roger
On 2/3/06, list user <[EMAIL PROTECTED]> wrote:
Hi Roger,
[big snip: lost o.p.]
There are a couple of different approaches you might try. One is to use
uml-utilities' tunctl to create an ethernet tap. Another is to use the
dummy interface. With either method you can bridge, route, configure as
you would a physical device using ifconfig and/or ip.
The following methods work for me. I use Fedora Core 4. Its network
setup methods are in /etc/sysconfig/network-scripts.
cd /etc/sysconfig/network-scripts
ln -s ifup-eth ifup-tap
ln -s ifdown-eth ifdown-tap
echo 'ip link show tap0 | grep "tap0" 2>&1 >/dev/null || tunctl -t tap0
DEVICE=tap0
TYPE=ethernet
>BOOTPROTO=static
MACADDR=5a:5a:5a:5a:5a:5a
NETWORK=192.168.0.0
IPADDR=192.168.0.1
BROADCAST= 192.168.0.255
NETMASK=255.255.255.0' > ifcfg-tap0
ifup tap0
ln -s ifup-eth0 ifup-dummy
ln -s ifdown-eth ifdown-dummy
echo 'ip link show dummy0 | grep "dummy0" 2>&1 >/dev/null || {
ip link set dummy0 up
ip link set dummy0 arp on
ip link set dummy0 multicast on
}
DEVICE=dummy0
TYPE=ethernet
>BOOTPROTO=static
MACADDR=a4:a5:a5:a5:a5:a5
NETWORK= 192.168.0.0
IPADDR=192.168.0.2
BROADCAST=192.168.0.255
NETMASK=255.255.255.0' > ifcfg-dummy0
ifup dummy0
If all went well there should now be two new virtual ethernet devices,
tap0 and dummy0.
Hope this information is useful to you,
Mike Wright :m)
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