Hi, I would like to use BFD of OVS, My test environment contains 2 VMs (Ubuntu 20.04, ovs_version: "2.13.1" ). My idea was to create one bridge on both hosts, call it br1 add one of the NICs of the vm (ens5 in my case) and add another internal port (port1) enable BFD on port1 on both side, and expecting that "state" and "remote_state" both up.
$ sudo ovs-vsctl show c86a02e5-1581-4105-a2a3-c037a82ac07b Manager "ptcp:6640:127.0.0.1" is_connected: true Bridge br1 Port port1 Interface port1 type: internal Port br1 Interface br1 type: internal Port ens5 Interface ens5 $ sudo ovs-ofctl dump-flows br1 cookie=0x0, duration=97300.373s, table=0, n_packets=55357, n_bytes=22244494, priority=0 actions=NORMAL $ ip -o l 3: ens5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master ovs-system state UP mode DEFAULT group default qlen 1000\ link/ether 52:54:00:d3:a2:03 brd ff:ff:ff:ff:ff:ff 23: br1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000\ link/ether 1e:79:bf:1e:a6:4f brd ff:ff:ff:ff:ff:ff 25: port1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000\ link/ether 2e:5a:c8:cc:ad:25 brd ff:ff:ff:ff:ff:ff $ ip -o a 3: ens5 inet6 fe80::5054:ff:fed3:a203/64 scope link \ valid_lft forever preferred_lft forever 25: port1 inet 192.168.222.53/24 brd 192.168.222.255 scope global dynamic port1\ valid_lft 2470sec preferred_lft 2470sec 25: port1 inet6 fe80::2c5a:c8ff:fecc:ad25/64 scope link \ valid_lft forever preferred_lft forever $ sudo ovs-vsctl set interface port1 bfd:bfd_src_ip=192.168.222.53 bfd:bfd_dst_ip=192.168.222.105 bfd:enable=true However something is missing. I can tcpdump BFD packets on port1, but they never reach the other host. If I set BFD on ens5 it works as expected. Could you please help me what I am missing? Thanks in advance for the help. regards Lajos Katona
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