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  1. Fast Datapath Product
  2. FDP-383

nat can't work when multiple bridges are create for different datapaths on one machine

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      What were you trying to do that didn't work?

      the support for multiple bridge for different datapaths are added in https://bugzilla.redhat.com/show_bug.cgi?id=1836209, but the nat doesn't work

      [root@wsfd-advnetlab20 bz1836209]# rpm -qa | grep -E "openvswitch3.1|ovn23.03"
      openvswitch3.1-3.1.0-35.el9fdp.x86_64
      python3-openvswitch3.1-3.1.0-35.el9fdp.x86_64
      ovn23.03-23.03.0-86.el9fdp.x86_64
      ovn23.03-central-23.03.0-86.el9fdp.x86_64
      ovn23.03-host-23.03.0-86.el9fdp.x86_64

      Steps to reproduce

      1. 1. setup on server:
        systemctl start openvswitch
        systemctl start ovn-northd
        ovn-nbctl set-connection ptcp:6641
        ovn-sbctl set-connection ptcp:6642

      ovn-nbctl ls-add ls1
      ovn-nbctl lsp-add ls1 ls1p1
      ovn-nbctl lsp-set-addresses ls1p1 "00:00:00:01:01:01 192.168.1.1 2001::1"
      ovn-nbctl lsp-add ls1 ls1p2
      ovn-nbctl lsp-set-addresses ls1p2 "00:00:00:01:01:02 192.168.1.2 2001::2"
      ovn-nbctl lsp-add ls1 ls1p3
      ovn-nbctl lsp-set-addresses ls1p3 "00:00:00:01:01:03 192.168.1.3 2001::3"

      ovn-nbctl lr-add lr1
      ovn-nbctl lrp-add lr1 lr1-ls1 00:00:00:00:00:01 192.168.1.254/24 2001::a/64
      ovn-nbctl lsp-add ls1 ls1-lr1
      ovn-nbctl lsp-set-addresses ls1-lr1 "00:00:00:00:00:01 192.168.1.254 2001::a"
      ovn-nbctl lsp-set-type ls1-lr1 router
      ovn-nbctl lsp-set-options ls1-lr1 router-port=lr1-ls1

      ovn-nbctl lrp-add lr1 lr1-ls2 00:00:00:00:00:02 192.168.2.254/24 2002::a/64

      ovn-nbctl ls-add ls2
      ovn-nbctl lsp-add ls2 ls2-lr1
      ovn-nbctl lsp-set-addresses ls2-lr1 "00:00:00:00:00:02 192.168.2.254 2002::a"
      ovn-nbctl lsp-set-type ls2-lr1 router
      ovn-nbctl lsp-set-options ls2-lr1 router-port=lr1-ls2

      ovn-nbctl lsp-add ls2 ls2p1
      ovn-nbctl lsp-set-addresses ls2p1 "00:00:00:01:02:01 192.168.2.1 2002::1"
      ovn-nbctl lsp-add ls2 ls2p2
      ovn-nbctl lsp-set-addresses ls2p2 "00:00:00:01:02:02 192.168.2.2 2002::2"
      ovn-nbctl lsp-add ls2 ls2p3
      ovn-nbctl lsp-set-addresses ls2p3 "00:00:00:01:02:03 192.168.2.3 2002::3"

      ovs-vsctl add-br br-ext
      ovs-vsctl set Open_vSwitch . external-ids:ovn-bridge-mappings=phynet:br-ext
      ovs-vsctl add-port br-ext ens1f1np1

      ip_subnet=202
      ovn-nbctl ls-add public
      ovn-nbctl lrp-add lr1 lr1-pub 00:00:00:ff:00:01 172.16.$ip_subnet.254/24 3001:$ip_subnet::a/64 \
      – lrp-set-gateway-chassis lr1-pub hv3
      ovn-nbctl lsp-add public pub-lr1 – set logical_switch_port pub-lr1 type=router \
      options:router-port=lr1-pub \
      – lsp-set-addresses pub-lr1 router
      ovn-nbctl lsp-add public pub_ln \
      – lsp-set-addresses pub_ln unknown \
      – lsp-set-type pub_ln localnet \
      – lsp-set-options pub_ln network_name=phynet
      ovn-nbctl lr-nat-add lr1 dnat_and_snat 172.16.$ip_subnet.11 192.168.1.1
      ovn-nbctl lr-nat-add lr1 dnat_and_snat 172.16.$ip_subnet.13 192.168.1.3

      ovs-vsctl set open . external_ids:system-id=hv3 external_ids:ovn-remote=tcp:20.0.202.25:6642 external_ids:ovn-encap-type=geneve external_ids:ovn-encap-ip=20.0.202.25
      systemctl start ovn-controller

      ovs-vsctl add-port br-int ls1p3 – set interface ls1p3 type=internal external_ids:iface-id=ls1p3
      ovs-vsctl add-port br-int ls2p3 – set interface ls2p3 type=internal external_ids:iface-id=ls2p3

      ip netns add ls1p3
      ip link set ls1p3 netns ls1p3
      ip netns exec ls1p3 ip link set ls1p3 address 00:00:00:01:01:03
      ip netns exec ls1p3 ip link set ls1p3 up
      ip netns exec ls1p3 ip addr add 192.168.1.3/24 dev ls1p3
      ip netns exec ls1p3 ip addr add 2001::3/64 dev ls1p3
      ip netns exec ls1p3 ip route add default via 192.168.1.254 dev ls1p3
      ip netns exec ls1p3 ip -6 route add default via 2001::a dev ls1p3

      ip netns add ls2p3
      ip link set ls2p3 netns ls2p3
      ip netns exec ls2p3 ip link set ls2p3 address 00:00:00:01:02:03
      ip netns exec ls2p3 ip link set ls2p3 up
      ip netns exec ls2p3 ip addr add 192.168.2.3/24 dev ls2p3
      ip netns exec ls2p3 ip addr add 2002::3/64 dev ls2p3
      ip netns exec ls2p3 ip route add default via 192.168.2.254 dev ls2p3
      ip netns exec ls2p3 ip -6 route add default via 2002::a dev ls2p3

      1. 2. setup on client

      systemctl start openvswitch

      ovs-vsctl add-br br-ext
      ovs-vsctl set Open_vSwitch . external-ids:ovn-bridge-mappings=phynet:br-ext
      ovs-vsctl add-port br-ext ens1f1np1

      ovs-vsctl set open . external_ids:ovn-set-local-ip=true
      ovs-vsctl \
      – set Open_vSwitch . external-ids:ovn-remote-hv1=tcp:20.0.202.25:6642 \
      – set Open_vSwitch . external-ids:ovn-encap-type-hv1=geneve \
      – set Open_vSwitch . external-ids:ovn-encap-ip-hv1=20.0.202.15 \
      – set Open_vSwitch . external-ids:ovn-bridge-hv1=br-hv1

      ovn-controller unix:/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info --user openvswitch:openvswitch --no-chdir --log-file=/var/log/ovn/ovn-controller1.log --pidfile=/run/ovn/ovn-controller.pid --detach -n hv1
      sleep 3
      #echo hv2 > /etc/openvswitch/system-id-override
      ovs-vsctl \
      – set Open_vSwitch . external-ids:ovn-remote-hv2=tcp:20.0.202.25:6642 \
      – set Open_vSwitch . external-ids:ovn-encap-type-hv2=geneve \
      – set Open_vSwitch . external-ids:ovn-encap-ip-hv2=20.0.202.26 \
      – set Open_vSwitch . external-ids:ovn-bridge-hv2=br-hv2

      ovn-controller unix:/run/openvswitch/db.sock -vconsole:emer -vsyslog:err -vfile:info --user openvswitch:openvswitch --no-chdir --log-file=/var/log/ovn/ovn-controller2.log --pidfile=/run/ovn/ovn-controller2.pid --detach -n hv2

      ovs-vsctl add-port br-hv1 ls1p1 – set interface ls1p1 type=internal external_ids:iface-id=ls1p1
      ovs-vsctl add-port br-hv1 ls2p1 – set interface ls2p1 type=internal external_ids:iface-id=ls2p1

      ip netns add ls1p1
      ip link set ls1p1 netns ls1p1
      ip netns exec ls1p1 ip link set ls1p1 address 00:00:00:01:01:01
      ip netns exec ls1p1 ip link set ls1p1 up
      ip netns exec ls1p1 ip addr add 192.168.1.1/24 dev ls1p1
      ip netns exec ls1p1 ip addr add 2001::1/64 dev ls1p1
      ip netns exec ls1p1 ip route add default via 192.168.1.254 dev ls1p1
      ip netns exec ls1p1 ip -6 route add default via 2001::a dev ls1p1

      ip netns add ls2p1
      ip link set ls2p1 netns ls2p1
      ip netns exec ls2p1 ip link set ls2p1 address 00:00:00:01:02:01
      ip netns exec ls2p1 ip link set ls2p1 up
      ip netns exec ls2p1 ip addr add 192.168.2.1/24 dev ls2p1
      ip netns exec ls2p1 ip addr add 2002::1/64 dev ls2p1
      ip netns exec ls2p1 ip route add default via 192.168.2.254 dev ls2p1
      ip netns exec ls2p1 ip -6 route add default via 2002::a dev ls2p1

      ovs-vsctl add-port br-hv2 ls1p2 – set interface ls1p2 type=internal external_ids:iface-id=ls1p2
      ip netns add ls1p2
      ip link set ls1p2 netns ls1p2
      ip netns exec ls1p2 ip link set ls1p2 address 00:00:00:01:01:02
      ip netns exec ls1p2 ip link set ls1p2 up
      ip netns exec ls1p2 ip addr add 192.168.1.2/24 dev ls1p2
      ip netns exec ls1p2 ip addr add 2001::2/64 dev ls1p2
      ip netns exec ls1p2 ip route add default via 192.168.1.254 dev ls1p2
      ip netns exec ls1p2 ip -6 route add default via 2001::a
      ovs-vsctl add-port br-hv2 ls2p2 – set interface ls2p2 type=internal external_ids:iface-id=ls2p2
      ip netns add ls2p2
      ip link set ls2p2 netns ls2p2
      ip netns exec ls2p2 ip link set ls2p2 address 00:00:00:01:02:02
      ip netns exec ls2p2 ip link set ls2p2 up
      ip netns exec ls2p2 ip addr add 192.168.2.2/24 dev ls2p2
      ip netns exec ls2p2 ip addr add 2002::2/64 dev ls2p2
      ip netns exec ls2p2 ip route add default via 192.168.2.254 dev ls2p2
      ip netns exec ls2p2 ip -6 route add default via 2002::a dev ls2p2

      ovs-vsctl add-port br-ext ext1 – set interface ext1 type=internal
      ip netns add ext1
      ip link set ext1 netns ext1
      ip netns exec ext1 ip link set ext1 up
      ip netns exec ext1 ip addr add 172.16.202.45/24 dev ext1

      1.  

      Expected results

      ip netns exec ls1p1 ping 172.16.202.45 -c 1 can PASS

      Actual results

      ip netns exec ls1p1 ping 172.16.202.45 -c 1 FAIL

      Other information

      [root@wsfd-advnetlab20 bz1836209]# ovs-vsctl show
      ef1922da-f012-47cd-8ea3-cd8b6f61ac44
      Bridge br-hv2
      fail_mode: secure
      datapath_type: system
      Port ovn0-hv1-0
      Interface ovn0-hv1-0
      type: geneve
      options:

      {csum="true", key=flow, local_ip="20.0.202.26", remote_ip="20.0.202.15"}

      Port ls2p2
      Interface ls2p2
      type: internal
      Port ovn0-hv3-0
      Interface ovn0-hv3-0
      type: geneve
      options:

      {csum="true", key=flow, local_ip="20.0.202.26", remote_ip="20.0.202.25"}

      Port ls1p2
      Interface ls1p2
      type: internal
      Port br-hv2
      Interface br-hv2
      type: internal
      Bridge br-hv1
      fail_mode: secure
      datapath_type: system
      Port ls1p1
      Interface ls1p1
      type: internal
      Port br-hv1
      Interface br-hv1
      type: internal
      Port ovn-hv3-0
      Interface ovn-hv3-0
      type: geneve
      options:

      {csum="true", key=flow, local_ip="20.0.202.15", remote_ip="20.0.202.25"}

      Port ovn-hv2-0
      Interface ovn-hv2-0
      type: geneve
      options:

      {csum="true", key=flow, local_ip="20.0.202.15", remote_ip="20.0.202.26"}

      Port ls2p1
      Interface ls2p1
      type: internal
      Bridge br-ext
      Port ens1f1np1
      Interface ens1f1np1
      Port br-ext
      Interface br-ext
      type: internal
      Port ext1
      Interface ext1
      type: internal
      ovs_version: "3.1.3"

      [root@wsfd-advnetlab20 bz1836209]# ip netns exec ls1p1 ping 172.16.202.45 -c 1
      PING 172.16.202.45 (172.16.202.45) 56(84) bytes of data.

      — 172.16.202.45 ping statistics —
      1 packets transmitted, 0 received, 100% packet loss, time 0ms

      [root@wsfd-advnetlab18 bz1836209]# ovs-vsctl show
      12707be9-87be-4027-8d0a-69d763e61a64
      Bridge br-ext
      Port patch-pub_ln-to-br-int
      Interface patch-pub_ln-to-br-int
      type: patch
      options:

      {peer=patch-br-int-to-pub_ln}

      Port ens1f1np1
      Interface ens1f1np1
      Port br-ext
      Interface br-ext
      type: internal
      Bridge br-int
      fail_mode: secure
      datapath_type: system
      Port ovn-hv1-0
      Interface ovn-hv1-0
      type: geneve
      options:

      {csum="true", key=flow, remote_ip="20.0.202.15"}

      Port ovn-hv2-0
      Interface ovn-hv2-0
      type: geneve
      options:

      {csum="true", key=flow, remote_ip="20.0.202.26"}

      Port patch-br-int-to-pub_ln
      Interface patch-br-int-to-pub_ln
      type: patch
      options:

      {peer=patch-pub_ln-to-br-int}

      Port br-int
      Interface br-int
      type: internal
      Port ls2p3
      Interface ls2p3
      type: internal
      Port ls1p3
      Interface ls1p3
      type: internal
      ovs_version: "3.1.3"
      [root@wsfd-advnetlab18 bz1836209]# ovn-sbctl show
      Chassis hv2
      hostname: wsfd-advnetlab20.anl.lab.eng.bos.redhat.com
      Encap geneve
      ip: "20.0.202.26"
      options:

      {csum="true"}
      Port_Binding ls2p2
      Port_Binding ls1p2
      Chassis hv3
      hostname: wsfd-advnetlab18.anl.lab.eng.bos.redhat.com
      Encap geneve
      ip: "20.0.202.25"
      options: {csum="true"}

      Port_Binding cr-lr1-pub
      Port_Binding ls1p3
      Port_Binding ls2p3
      Chassis hv1
      hostname: wsfd-advnetlab20.anl.lab.eng.bos.redhat.com
      Encap geneve
      ip: "20.0.202.15"
      options:{csum="true"}

      Port_Binding ls2p1
      Port_Binding ls1p1

              lorenzobianconi lorenzo bianconi
              rhn-support-jishi Jianlin Shi
              Jianlin Shi Jianlin Shi
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                Created:
                Updated:
                Resolved: