[ovs-discuss] questions about the in-band mode

[Ben Pfaff]

On Sat, Apr 18, 2015 at 04:39:41PM +0800, 张晨 wrote:
> i am researching on the in-band networking of ovs. i have my controller c0 with ip 1.0.0.10, which is connected to s1-eth1 as a host, and the internal interface s1 with manually assigned ip 1.0.0.1. In this case, my controller tells me that s1 is connected successfully.
> and then, i connect s2-eth1 with s1-eth2, and the internal interface of s2 is manually assigned 1.0.0.2, but this time, s2 failed to connect the controller, because s1 doesn't know how to handle the arp request from s2 to c0(i found an of-packetin from s1 to c0), which is received on s1-eth2.
> 
> 
> what does this design mean? i just thought that the in-band mode support all the switches could connect to the dataplane-lied controller.

The design of OVS in-band control is covered in detail in DESIGN.md in
the OVS source tree.