I'm seeing traffic on both interfaces of an active-backup bond. This is a
bond of eth0 and eth1 with both management and vm traffic. Given the
requirement that a bonded management interface be in active-backup mode
and since balance-slb doesn't work unless the ports are connected to the
same switch (or stack) I have the bond in active-backup mode:
# xe pif-list
uuid=c5145148-5a9d-fe94-8129-d66fb26cb0f4 params=other-config
other-config (MRW) : bond-mode: active-backup
#ovs-vsctl list port
_uuid : a3320c0c-5511-4705-9355-fadbe8e06b90
bond_downdelay : 200
bond_fake_iface : true
bond_updelay : 31000
external_ids : {}
fake_bridge : false
interfaces : [59378258-2394-4c53-8708-e92106488a30,
c2c11a5e-b6d5-449c-b05f-b4d5ed2e53f1]
mac : "00:1b:24:3e:09:35"
name : "bond0"
other_config : {bond-miimon="100", bond-mode=active-backup,
bond-use_carrier="1"}
qos : []
tag : []
trunks : []
# ovs-appctl bond/show bond0
updelay: 31000 ms
downdelay: 200 ms
next rebalance: 9144 ms
slave eth1: enabled
active slave
hash 213: 5 kB load
00:1b:24:3e:09:35
slave eth0: enabled
hash 0: 1 kB load
a2:7f:92:f5:83:96
hash 51: 0 kB load
hash 251: 0 kB load
hash 255: 0 kB load
It would seem like it's setup and working correctly with eth1 being the
active interface. So, why am I seeing VM traffic on eth0?
# tcpdump -vv -i eth0
16:25:46.653749 IP (tos 0x0, ttl 245, id 40076, offset 0, flags [none],
proto: ICMP (1), length: 84) 65.102.12.15 > vpc: ICMP echo
request, id 27167, seq 18452, length 64
16:25:46.653805 IP (tos 0x0, ttl 64, id 31595, offset 0, flags [none],
proto: ICMP (1), length: 84) vpc > 65.102.12.15: ICMP echo
reply, id 27167, seq 18452, length 64
The problems I'm seeing are intermittent packet loss to both the VM and
to dom0 as well as the interfaces being dead after a live migration until
I send traffic from the VM. This same environment works fine under
XenServer 5.5 (running in linux bridge mode). There's very little
knowledge available in relation to OVS so any guidance would be
appreciated.
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