Hi All,
I have an Openstack setup where 2 NICs are bonded using OVS bond :
ovs-vsctl add-br ovsbr1
ovs-vsctl add-bond ovsbr1 bond0 ens1f0 ens1f1
The 2 NICs are connected to different switches that go to the same subnet
(Switch redundancy ).
OVS bond is in active-backup mode.
[root@psxsvtg81 ~]# ovs-appctl bond/show bond0
---- bond0 ----
bond_mode: active-backup
bond may use recirculation: no, Recirc-ID : -1
bond-hash-basis: 0
updelay: 0 ms
downdelay: 0 ms
lacp_status: off
active slave mac: 14:02:ec:66:d5:89(ens1f1)
slave ens1f0: enabled
active slave
may_enable: true
slave ens1f1: enabled
may_enable: true
Problem is the OVS Bridge ovsbr1 is not replying to the ARP message.
So the instances are not reachable from outside.
I can see ARP request for the instance ip , but the bridge ovsbr1 does not
reply since it is not storing the MAC addresses.
[root@psxsvtg81 ~]# tcpdump -i ovsbr1
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on ovsbr1, link-type EN10MB (Ethernet), capture size 65535 bytes
17:23:55.641553 ARP, Request who-has 10.54.178.245 tell psxsvtg81, length 28
17:23:56.642420 ARP, Request who-has 10.54.178.245 tell psxsvtg81, length 28
17:23:57.644420 ARP, Request who-has 10.54.178.245 tell psxsvtg81, length 28
17:23:59.640485 ARP, Request who-has 10.54.178.245 tell psxsvtg81, length 28
17:24:00.642423 ARP, Request who-has 10.54.178.245 tell psxsvtg81, length 28
17:24:01.644420 ARP, Request who-has 10.54.178.245 tell psxsvtg81, length 28
[root@psxsvtg81 ~]# ovs-appctl fdb/show ovsbr1
port VLAN MAC Age
[root@psxsvtg81 ~]#
Why would this happen and how do I fix this ?
Thanks,
Ashwin
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