On Tue, May 8, 2012 at 10:32 AM, Brandon Heller <brand...@stanford.edu> wrote: > On Tue, May 8, 2012 at 8:22 AM, Jesse Gross <je...@nicira.com> wrote: >> >> On Mon, May 7, 2012 at 6:48 PM, Brandon Heller <brand...@stanford.edu> >> wrote: >> > I'd like to configure OVS using OpenFlow+Nicira extensions to push two >> > VLAN >> > tags, to load-balance at higher levels of a multi-rooted tree on >> > physical >> > switches that only support OpenFlow 1.0 in firmware and so don't support >> > ECMP. Double-stacked VLANs aren't strictly necessary; double IP-in-IP >> > or >> > VLAN + IP-in-IP would probably work too. >> > >> > One possibility may be to use a nicira_header to add a VLAN header with >> > OFPAT_SET_VLAN_VID and then output to NXAST_RESUBMIT. The resubmit >> > match >> > would then need to encap a VLAN the next time rather than set it, and I >> > don't see an action for that other than maybe tunneling. >> >> Resubmitting won't help since it doesn't change the action - the >> OpenFlow 1.0 action will just set it the second time. Internally OVS >> has the ability to push multiple tags but that's not exposed to the >> outside. > > > Time to expose it, then. Can you provide a pointer to the code section and > private action? Thanks.
Newer versions of OpenFlow change this into push/pop semantics so that should solve your problem and would be the best direction to go. There was some discussion and work around QinQ on the mailing list a while ago so you might want to search and see if there is something that you can use as a starting point. _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
