On Wed, 2012-09-19 at 11:01 -0700, Stephen Hemminger wrote: > On Wed, 19 Sep 2012 13:57:39 -0400 > christopher barry <cba...@rjmetrics.com> wrote: > > > On Tue, 2012-09-18 at 23:49 -0400, christopher barry wrote: > > > if this is not the best list for user questions, please send me to > > > wherever the best place is for that. > > > > > > I'm building an opennebula cloud, and I have openvswitch master running > > > on squeeze kvm host nodes with 3.5.4 as bridge br0 with a single port > > > (eth0 at the moment). Each host node also has a Mellanox QDR HCA for > > > storage connectivity. I've configured an ipoib interface (ib0) as well > > > on each node. eth0 and ib0 are on separate subnets. > > > > > > Thinking it would be faster to use ib0 as the bridge port, rather than > > > eth0, I reconfigured all the bridges in /etc/network/interfaces to use > > > ib0, removing eth0 as a port in the file, and bounced the cluster. > > > > > > couple of things happened: > > > * ib0 did get added as a port, but eth0 remained unexpectedly (I had to > > > del-port it) (that may be by design though, dunno) > > > * I could not pass traffic through br0 when ib0 was a port. > > > * I could ping the bridge with ib0 from it's owning host, but not from > > > outside. (assuming it's just br0 answering, and ib0 is non-functional) > > > > > > I'm confused about what is happening. By itself, the ib0 is functioning > > > fine, and the bridge works fine with eth0. Is it because ib0 is not a > > > real ethernet nic, per se, that I can't make this work? Was it dumb to > > > even try it? Or, am I just missing something obvious? > > > > > > Thanks for any insight, > > > -C > > > > > > > No takers? > > Isn't Infiniband and Ethernet addressing different?
certainly underneath it is, and why I wondered if it's just too different to work, but an ip-over-ib device (ib0) is configured with standard ip addresses and netmasks, and behaves from the user's perspective just like an ethernet device, so I was hoping to exploit it. If it can't work, that's OK, I just wanted to be sure (because it really is a LOT faster). -C _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
