[ovs-discuss] first ping lost

[Frédéric Marchand]

Hello all,

I've installed and configured openvswitch 2.3.1 on 3 machines (ubuntu
15.04). I've created a bridge with two interfaces in LACP balance-tcp.
I also added some fake bridges with vlan tags.

The problem i have is when I ping one of the fake bridge, the first
ping is lost (unless there is a tcp connection already up!):

PING 10.10.22.11 (10.10.22.11) 56(84) bytes of data.
64 bytes from 10.10.22.11: icmp_seq=2 ttl=64 time=0.419 ms
64 bytes from 10.10.22.11: icmp_seq=3 ttl=64 time=0.361 ms

Here is the configuration:

ovs-vsctl add-br br-main
ovs-vsctl ovs-vsctl add-bond br-main bond0 em1 em2
ovs-vsctl set port bond0 bond_mode=balance-tcp
ovs-vsctl set port bond0 lacp=active
ovs-vsctl add-br br-data br-main 22
ip addr add 10.10.22.11/24 dev br-data

LACP seems fine:
---- bond0 ----
status: active negotiated
sys_id: 34:64:a9:9a:5f:00
sys_priority: 65534
aggregation key: 1
lacp_time: slow

The machines have broadcom BCM5720 interfaces using tg3 drivers.

Also, i guess it's linked, DNS queries coming out this interface
timeout most of the time. But if i ping the DNS server while doing an
nslookup, it works fine.

Anyone knows what is the problem?

Thanks,

Fred