# Testing router peer port
# Changing router's peer port does not take effect until OVN controller is recomputed  

systemctl start ovn-northd
ovn-nbctl set-connection ptcp:6641
ovn-sbctl set-connection ptcp:6642
systemctl start openvswitch
ovs-vsctl set open . external_ids:system-id=hv1
ovs-vsctl set open . external_ids:ovn-remote=tcp:42.42.42.1:6642
ovs-vsctl set open . external_ids:ovn-encap-type=geneve
ovs-vsctl set open . external_ids:ovn-encap-ip=42.42.42.1
systemctl start ovn-controller

#### TOPO ####
#lr1------lr2
#|         |
#|         |
#|         |
#ls1      ls2
#|         |
#|         |
#|         |
#vm1      vm2

ovn-nbctl lr-add lr1
ovn-nbctl lr-add lr2

ovn-nbctl lrp-add lr1 lr1-lr2 00:00:00:00:01:02 172.16.0.1/24 peer=lr2-lr1
ovn-nbctl lrp-add lr2 lr2-lr1 00:00:00:00:02:01 172.16.0.2/24 peer=lr1-lr2

ovn-nbctl lrp-add lr1 lr1-ls1 00:00:00:00:01:01 172.16.1.1/24
ovn-nbctl lrp-add lr2 lr2-ls2 00:00:00:00:02:02 172.16.2.1/24

ovn-nbctl ls-add ls1
ovn-nbctl ls-add ls2

ovn-nbctl lsp-add ls1 ls1-lr1
ovn-nbctl lsp-set-type ls1-lr1 router
ovn-nbctl lsp-set-options ls1-lr1 router-port=lr1-ls1
ovn-nbctl lsp-set-addresses ls1-lr1 router

ovn-nbctl lsp-add ls2 ls2-lr2
ovn-nbctl lsp-set-type ls2-lr2 router
ovn-nbctl lsp-set-options ls2-lr2 router-port=lr2-ls2
ovn-nbctl lsp-set-addresses ls2-lr2 router

ovn-nbctl lsp-add ls1 ls1p1 
ovn-nbctl lsp-set-addresses ls1p1 00:00:00:01:00:01
ovn-nbctl lsp-add ls1 ls1p2 
ovn-nbctl lsp-set-addresses ls1p2 00:00:00:01:00:02
ovn-nbctl lsp-add ls2 ls2p1
ovn-nbctl lsp-set-addresses ls2p1 00:00:00:02:00:01

ip netns add vm1
ip link add veth0_v1 type veth peer name veth0_v1_p
ip link set veth0_v1 netns vm1
ip netns exec vm1 ip link set lo up
ip netns exec vm1 ip link set veth0_v1 up
ip netns exec vm1 ip link set veth0_v1 address 00:00:00:01:00:01
ip netns exec vm1 ip addr add 172.16.1.2/24 dev veth0_v1
#ip netns exec vm1 ip -6 addr add 3001::1/64 dev veth0_v1
ip netns exec vm1 ip route add default via 172.16.1.1 dev veth0_v1
#ip netns exec vm1 ip -6 route add default via 3001::a dev veth0_v1
ovs-vsctl add-port br-int veth0_v1_p
ip link set veth0_v1_p up
ovs-vsctl set interface veth0_v1_p external_ids:iface-id=ls1p1

ip netns add vm2
ip link add veth0_v2 type veth peer name veth0_v2_p
ip link set veth0_v2 netns vm2
ip netns exec vm2 ip link set lo up
ip netns exec vm2 ip link set veth0_v2 up
ip netns exec vm2 ip link set veth0_v2 address 00:00:00:02:00:01
ip netns exec vm2 ip addr add 172.16.2.2/24 dev veth0_v2
#ip netns exec vm2 ip -6 addr add 3001::1/64 dev veth0_v2
ip netns exec vm2 ip route add default via 172.16.2.1 dev veth0_v2
#ip netns exec vm2 ip -6 route add default via 3001::a dev veth0_v2
ovs-vsctl add-port br-int veth0_v2_p
ip link set veth0_v2_p up
ovs-vsctl set interface veth0_v2_p external_ids:iface-id=ls2p1

ovn-nbctl lr-route-add  lr1 172.16.2.0/24 172.16.0.2
ovn-nbctl lr-route-add  lr2 172.16.1.0/24 172.16.0.1

[root@dell-per740-81 ~]# ovn-nbctl list logical-router-port lr1-lr2
_uuid               : 2677ebda-2e1e-412a-8f43-2dd84adc7d9b
enabled             : []
external_ids        : {}
gateway_chassis     : []
ha_chassis_group    : []
ipv6_prefix         : []
ipv6_ra_configs     : {}
mac                 : "00:00:00:00:01:02"
name                : lr1-lr2
networks            : ["172.16.0.1/24"]
options             : {}
peer                : lr2-lr1
[root@dell-per740-81 ~]# ovn-nbctl list logical-router-port lr2-lr1
_uuid               : bd1df1f5-eb62-4a08-8806-c31b824100bd
enabled             : []
external_ids        : {}
gateway_chassis     : []
ha_chassis_group    : []
ipv6_prefix         : []
ipv6_ra_configs     : {}
mac                 : "00:00:00:00:02:01"
name                : lr2-lr1
networks            : ["172.16.0.2/24"]
options             : {}
peer                : lr1-lr2


[root@dell-per740-81 ~]# ip netns exec vm1 ping 172.16.2.2 -c 3
PING 172.16.2.2 (172.16.2.2) 56(84) bytes of data.
64 bytes from 172.16.2.2: icmp_seq=1 ttl=62 time=0.584 ms
64 bytes from 172.16.2.2: icmp_seq=2 ttl=62 time=0.048 ms
64 bytes from 172.16.2.2: icmp_seq=3 ttl=62 time=0.043 ms

--- 172.16.2.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2058ms
rtt min/avg/max/mdev = 0.043/0.225/0.584/0.253 ms

[root@dell-per740-81 ~]# ovn-nbctl set logical-router-port lr1-lr2 peer=[]
[root@dell-per740-81 ~]# ovn-nbctl set logical-router-port lr2-lr1 peer=[]

[root@dell-per740-81 ~]# ovn-nbctl list logical-router-port lr1-lr2
_uuid               : 2677ebda-2e1e-412a-8f43-2dd84adc7d9b
enabled             : []
external_ids        : {}
gateway_chassis     : []
ha_chassis_group    : []
ipv6_prefix         : []
ipv6_ra_configs     : {}
mac                 : "00:00:00:00:01:02"
name                : lr1-lr2
networks            : ["172.16.0.1/24"]
options             : {}
peer                : []
[root@dell-per740-81 ~]# ovn-nbctl list logical-router-port lr2-lr1
_uuid               : bd1df1f5-eb62-4a08-8806-c31b824100bd
enabled             : []
external_ids        : {}
gateway_chassis     : []
ha_chassis_group    : []
ipv6_prefix         : []
ipv6_ra_configs     : {}
mac                 : "00:00:00:00:02:01"
name                : lr2-lr1
networks            : ["172.16.0.2/24"]
options             : {}
peer                : []

[root@dell-per740-81 ~]# ip netns exec vm1 ping 172.16.2.2 -c 3
PING 172.16.2.2 (172.16.2.2) 56(84) bytes of data.


--- 172.16.2.2 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2055ms

[root@dell-per740-81 ~]# ovn-nbctl set logical-router-port lr2-lr1 peer=lr1-lr2
[root@dell-per740-81 ~]# ovn-nbctl set logical-router-port lr1-lr2 peer=lr2-lr1
[root@dell-per740-81 ~]# ip netns exec vm1 ping 172.16.2.2 -c 3
PING 172.16.2.2 (172.16.2.2) 56(84) bytes of data.

--- 172.16.2.2 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2049ms

[root@dell-per740-81 ~]# ovn-nbctl list logical-router-port lr1-lr2
_uuid               : 2677ebda-2e1e-412a-8f43-2dd84adc7d9b
enabled             : []
external_ids        : {}
gateway_chassis     : []
ha_chassis_group    : []
ipv6_prefix         : []
ipv6_ra_configs     : {}
mac                 : "00:00:00:00:01:02"
name                : lr1-lr2
networks            : ["172.16.0.1/24"]
options             : {}
peer                : lr2-lr1
[root@dell-per740-81 ~]# ovn-nbctl list logical-router-port lr2-lr1
_uuid               : bd1df1f5-eb62-4a08-8806-c31b824100bd
enabled             : []
external_ids        : {}
gateway_chassis     : []
ha_chassis_group    : []
ipv6_prefix         : []
ipv6_ra_configs     : {}
mac                 : "00:00:00:00:02:01"
name                : lr2-lr1
networks            : ["172.16.0.2/24"]
options             : {}
peer                : lr1-lr2


[root@dell-per740-81 ~]# ovn-appctl -t ovn-controller recompute
[root@dell-per740-81 ~]# ip netns exec vm1 ping 172.16.2.2 -c 3
PING 172.16.2.2 (172.16.2.2) 56(84) bytes of data.
64 bytes from 172.16.2.2: icmp_seq=1 ttl=62 time=0.516 ms
64 bytes from 172.16.2.2: icmp_seq=2 ttl=62 time=0.047 ms
64 bytes from 172.16.2.2: icmp_seq=3 ttl=62 time=0.018 ms

--- 172.16.2.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2068ms
rtt min/avg/max/mdev = 0.018/0.193/0.516/0.228 ms


[root@dell-per740-81 ~]# rpm -qa |grep -E 'ovn|openvswitch'
openvswitch2.15-2.15.0-53.el8fdp.x86_64
ovn-2021-central-21.09.1-23.el8fdp.x86_64
openvswitch-selinux-extra-policy-1.0-28.el8fdp.noarch
ovn-2021-host-21.09.1-23.el8fdp.x86_64
ovn-2021-21.09.1-23.el8fdp.x86_64