Hi all,
I have a network with topology h1--s1==s2--h2. Where "==" means there are
two links between s1 and s2. I want to use group action for multi-path
routing between h1 and h2. I experimented on a physical network, where s1
and s2 are Ubuntu16.04 with Openvswitch 2.5.2.
(1) In s1, I added "eth1", "eth2", "eth3" to ovs bridge "br0".
root@ubuntu:~# ovs-vsctl show
adf8538d-c23e-442d-a557-469eed7c81da
Bridge "br0"
Port "eth3"
Interface "eth3"
Port "eth2"
Interface "eth2"
Port "eth1"
Interface "eth1"
Port "br0"
Interface "br0"
type: internal
ovs_version: "2.5.2"
(2) Then, I add a group: ovs-ofctl -O OpenFlow13 add-group br0
group_id=5566,type=select,bucket=output:1,bucket=output:2
root@ubuntu:~# ovs-ofctl -O OpenFlow13 dump-groups br0OFPST_GROUP_DESC
reply (OF1.3) (xid=0x2):
group_id=5566,type=select,bucket=actions=output:1,bucket=actions=output:2
(3) Then, I add a flow to choose group action for traffic from inport 3.
ovs-ofctl -O OpenFlow13 add-flow br0 in_port=3,actions=group:5566
root@ubuntu:~# ovs-ofctl dump-flows br0
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=885.986s, table=0, n_packets=0, n_bytes=0,
idle_age=885, in_port=3 actions=drop
cookie=0x0, duration=980.431s, table=0, n_packets=0, n_bytes=0,
idle_age=980, priority=0 actions=NORMAL
But the action is not group, but drop instead. I tried the same commands in
mininet and everything is fine. I wonder what's might cause this problem?
Thanks,
Yuanjun
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