On Fri, Jul 19, 2019 at 02:22:18PM -0700, Dan Sneddon wrote: > On Fri, Jul 19, 2019 at 7:46 AM Grzegorz <juszczak.grzeg...@gmail.com> > wrote: > > > Hi Jason > > > > I have the same doubts - I would like to connect balance-slb in OpenStack > > Rocky to two separate switches. > > > > I see you wrote this post a few years ago. > > Have you figured it out finally? > > > > Thank you in advance for your reply > > > > BR > > Grzegorz Juszczak > > > > This only works if the two switches are clustered, i.e. two or more chassis > running as a single logical switch. > > The issue is that balance-slb will only use one link for a MAC+VLAN, but > when rebalancing happens the traffic may start using the other port. If the > switch attached to the original port doesn't know that the traffic is now > using the other port/different switch, then traffic to the OVS bond may be > lost. > > You can use active-backup with OVS bonds and two switches, or attach a > bond/team using a different bonding technique (Linux kernel bonds, teamd > adapter teams, etc.) that supports disparate switches and then attach that > bond to OVS. There aren't many good options for attaching to multiple > switches, so I try to use switches that can be clustered when I'm not using > a chassis switch. > > Look into teamd, it has more options for controlling how your traffic is > load balanced, and you can choose your own hash combinations. I've > configured OpenStack deployments with teams attached to OVS bridges for > Neutron. The best documentation I've found so far is here, but you may need > to adjust depending on Linux distribution: > > https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/networking_guide/ch-configure_network_teaming
This is a helpful email. Is there a chance you'd be willing to rephrase it as a FAQ question and answer? Then it'd be useful to lots of people. _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss