On Tue, Jul 14, 2020 at 8:13 AM Girish Moodalbail <gmoodalb...@gmail.com> wrote: > > Hello Han, Dumitru, Numan, and others, > > > As per OVN architecture documentation, `join` logical switch is exclusively > used to connect the gateway routers to distributed routers. So, all the ports > connected to the join switch are ‘router’ logical_switch_ports. Now, > > > Say a packet arrives on the gateway router and is meant for a VM behind a > logical switch. We lookup the routing table, determine the nexthop, find the > destination MAC address for the nexthop IP from lr_in_arp_resolve table and > send the packet out towards the distributed router. > > > On the other direction, the packet from a VM towards 8.8.8.8 arrives at the > distributed router. We lookup the routing table, determine the nexhop, find > the destination MAC address for the nexthop IP lfrom lr_in_arp_resolve table > and send the packet out towards the gateway router. > > > From (a) and (b) above, at least on the Join switch, we should never see any > ‘ARP requests at all, right? If this is the case, then the whole > ls_in_arp_rsp table for the join switch can be just
Hi Girish, I don't think ovn-northd/ovn-controller can say if a logical switch is a join switch or not. I think OVN can address this by providing an option in the logical_switch options column and if it is set to true, ovn-northd will not populate the ls_in_arp_rps table at all. ovn-k8s should set this option when creating join logical switches. Any thoughts on this approach ? Thanks Numan > > > table=13(ls_in_arp_rsp ), priority=0 , match=(1), action=(next;) > > > Any thoughts? > > > In a 1000 Node K8s cluster, there are around 12K Logical Flows for `join` > switch. Out of which, 6K Logical flows are from table=13 and none of those > flows are being used. I am trying to see if we can optimize this path. > > > Regards, > > ~Girish > > > -- > You received this message because you are subscribed to the Google Groups > "ovn-kubernetes" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to ovn-kubernetes+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/ovn-kubernetes/CAAF2STSCRqYJW5nojZJOrRhSEg%2BmJeyTEEL3EmHY0pnWYs9Vbg%40mail.gmail.com. _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
