Hi,
i didn't find any informations about the correct setup in xen to use
more than 1 nic.
I have the latest xen-unstable running on RHAS4 with domU with RHAS3. If
i configure to use only 1 nic (fix ip-address) xen works fine. However i
need 2 nics configured in xenU.
My approach was to create 2 bridges (1 points to eth0 and the other one
to dummy0):
ifconfig looks like this:
dummy0 Link encap:Ethernet HWaddr CE:1F:17:EB:E5:60
inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING NOARP 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:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
eth0 Link encap:Ethernet HWaddr 00:08:74:F6:1C:86
inet addr:140.86.194.94 Bcast:140.86.199.255 Mask:255.255.248.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:169941 errors:0 dropped:0 overruns:0 frame:0
TX packets:2592 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:23642265 (22.5 MiB) TX bytes:275369 (268.9 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:12 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:976 (976.0 b) TX bytes:976 (976.0 b)
peth0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:177748 errors:0 dropped:0 overruns:0 frame:0
TX packets:2680 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:25276339 (24.1 MiB) TX bytes:300080 (293.0 KiB)
Base address:0xecc0 Memory:ff8e0000-ff900000
vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2592 errors:0 dropped:0 overruns:0 frame:0
TX packets:169941 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:275369 (268.9 KiB) TX bytes:23642265 (22.5 MiB)
vif4.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:51761 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
vif4.2 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING 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:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
xen-br0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:165862 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:19737926 (18.8 MiB) TX bytes:0 (0.0 b)
xen-br1 Link encap:Ethernet HWaddr CE:1F:17:EB:E5:60
inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING 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:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
The bridges are showed up like this:
bridge name bridge id STP enabled interfaces
xen-br0 8000.feffffffffff no vif0.0
peth0
vif4.1
xen-br1 8000.ce1f17ebe560 no dummy0
vif4.2
on start of the domU i create the vif-bridges.
If i specify only 1 ip-address (and nic=1) in config-file everything
works fine (of course only 1 nic). However as soon as i try to specify 2
nics i have no network at all.
Here my question: What is the correct syntax to provide more than 1
ip-address, netmask, etc in the conf-file?
I tried another approach by configuring the 2nd nic in domU directly
(/etc/sysconfig/network-scripts/ifcfg-eth1). This works, however it has
some odd side-effects (wrong routing tables,etc). Moreover, based on the
concept of xen i don't think this is the correct way...
Any help is highly appreciated...
cheers,
Roland
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