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 LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
You can do this with vlans, but this may not be a suitable solution, as if you want to make them work normaly, you will need to tie this to a vlan capable switch. I don''t belive that alias interfaces support setting seperate mac addresses, however, you might want to look at ebtables, it has some mac address rewriting functionality which may meet your needs. On 2/2/06, Roger Singh <rogerindia@gmail.com> wrote:> 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 > LARTC@mailman.ds9a.nl > http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc > > >-- Ryan Castellucci http://ryanc.org/ -- Ryan Castellucci http://ryanc.org/
Thanks Ryan. VLAN will not for for me, I will check ebtables. BTW, I was thinking more on lines of MAC-VLAN. I could not find much information about it. I will really appriciate if someone can provide me some direction one this. Thanks R On 2/2/06, Ryan Castellucci <ryan.castellucci@gmail.com> wrote:> > You can do this with vlans, but this may not be a suitable solution, > as if you want to make them work normaly, you will need to tie this to > a vlan capable switch. I don''t belive that alias interfaces support > setting seperate mac addresses, however, you might want to look at > ebtables, it has some mac address rewriting functionality which may > meet your needs. > > On 2/2/06, Roger Singh <rogerindia@gmail.com> wrote: > > 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 > > LARTC@mailman.ds9a.nl > > http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc > > > > > > > > > -- > Ryan Castellucci http://ryanc.org/ > > > -- > Ryan Castellucci http://ryanc.org/ > _______________________________________________ > LARTC mailing list > LARTC@mailman.ds9a.nl > http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc >_______________________________________________ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
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
ONBOOT=yes
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
ONBOOT=yes
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)
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 <nhgxfjijdrcd@mailinator.com> 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 > ONBOOT=yes > 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 > ONBOOT=yes > 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) > > _______________________________________________ > LARTC mailing list > LARTC@mailman.ds9a.nl > http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc >_______________________________________________ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
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