On 11/04/2014 16:04, Gurucharan Shetty wrote:
if it is a basic
configuration, you may want to look at
debian/openvswitch-switch.README.Debian in the git repo that explains
how to configure Open vSwitch with 'interfaces'. That way, you can
just copy the interfaces file to a different machine.
Before reading this, what I had done was just the following:
auto br-wan
iface br-wan inet dhcp
auto br-lan
iface br-lan inet static
address 192.168.56.13
netmask 255.255.255.0
auto eth0
iface eth0 inet manual
auto eth1
iface eth1 inet manual
Given that openvswitch was already stored a configuration with bridge
br-wan containing port eth0, and bridge br-lan containing port eth1, it
appears to work fine. When the machine comes up, openvswitch starts, the
bridge interfaces are created, the ports are brought up, and the bridges
get IP addresses.
Is that a reasonable / supported way of working?
Contrasting this to how debian/openvswitch-switch.README.Debian says to
do it, it seems to be very complicated. The "bridge with one port"
example is:
allow-ovs br0
iface br0 inet dhcp
ovs_type OVSBridge
ovs_ports eth0
allow-br0 eth0
iface eth0 inet manual
ovs_bridge br0
ovs_type OVSPort
That is: you have to say that the bridge br0 exists and contains port
eth0; but you must also say that the port eth0 exists and it is a member
of br0?
You don't need to do that with bridge-utils. You'd simply write:
auto eth0
iface eth0 inet manual
auto br-wan
iface br-wan inet dhcp
bridge_ports eth0
The other thing which concerns me is what it says at the top of that
README file:
* To use the Linux kernel-based switch implementation, you will need
to build and install the Open vSwitch kernel module. To do so, install
the openvswitch-datapath-source package, then follow the instructions
given in /usr/share/doc/openvswitch-datapath-source/README.Debian
I haven't installed openvswitch-datapath-{source|dkms} package, and it
appears to work fine. It has loaded the openvswitch modules which came
with the kernel.
So is that instruction now incorrect? Can I be sure that I'm using the
kernel datapath and not the userland data path?
Regards,
Brian.
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