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Hi shihanzhang / Alioune ,

*your kernel (check with uname -r )  should support OVS version , below
table compare kern*el versions and corresponding Open vSwitch release
support

| Open vSwitch | Linux kernel
|:------------:|:-------------:
|    1.4.x     | 2.6.18 to 3.2
|    1.5.x     | 2.6.18 to 3.2
|    1.6.x     | 2.6.18 to 3.2
|    1.7.x     | 2.6.18 to 3.3
|    1.8.x     | 2.6.18 to 3.4
|    1.9.x     | 2.6.18 to 3.8
|    1.10.x    | 2.6.18 to 3.8
|    1.11.x    | 2.6.18 to 3.8
|    2.0.x     | 2.6.32 to 3.10
|    2.1.x     | 2.6.32 to 3.11
|    2.3.x     | 2.6.32 to 3.14
|    2.4.x     | 2.6.32 to 4.0
|    2.5.x     | 2.6.32 to 4.3

http://openvswitch.org/support/dist-docs/FAQ.md.txt (
### Q: What Linux kernel versions does each Open vSwitch release work with?)

I installed SFC with OVS 2.4.0  and 2.5.0 and not seen any issue

Please check SFC wiki for installation guidelines :
https://wiki.openstack.org/wiki/Neutron/ServiceInsertionAndChaining


Thanks.,

Mohankumar.N





On Tue, Jun 7, 2016 at 1:46 PM, shihanzhang <ayshihanzhang at 126.com> wrote:

> Hi Alioune and Cathy,
>      For devstack on ubuntu14.04, the default ovs version is 2.0.2, so
> there was the error as Alioune said.
>      Do we need to install speical ovs version in networking-sfc devstack
> plugin.sh?
>
>
>
>
>
> 在 2016-06-07 07:48:26，"Cathy Zhang" <Cathy.H.Zhang at huawei.com> 写道：
>
> Hi Alioune,
>
>
>
> Which OVS version are you using?
>
> Try openvswitch version 2.4.0 and restart the openvswitch-server before
> installing the devstack.
>
>
>
> Cathy
>
>
>
> *From:* Alioune [mailto:balioune3 at gmail.com]
> *Sent:* Friday, June 03, 2016 9:07 AM
> *To:* openstack-dev at lists.openstack.org
> *Cc:* Cathy Zhang
> *Subject:* [openstack-dev][neutron][SFC]
>
>
>
> Probleme with OpenStack SFC
>
> Hi all,
>
> I've installed Openstack SFC with devstack and all module are corretly
> running except the neutron L2-agent
>
>
>
> After a "screen -rd", it seems that there is a conflict between l2-agent
> and SFC (see trace bellow).
>
> I solved the issue with "sudo ovs-vsctl set bridge br
> protocols=OpenFlow10,OpenFlow11,OpenFlow12,OpenFlow13" on all openvswitch
> bridge (br-int, br-ex, br-tun and br-mgmt0).
>
> I would like to know:
>
>       - If someone knows why this error arrises ?
>
>      - is there another way to solve it ?
>
>
>
> Regards,
>
>
>
> 2016-06-03 12:51:56.323 WARNING
> neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent
> [req-1258bbbc-7211-4cfd-ab7c-8b856604f768 None None] OVS is dead.
> OVSNeutronAgent will keep running and checking OVS status periodically.
>
> 2016-06-03 12:51:56.330 DEBUG
> neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent
> [req-1258bbbc-7211-4cfd-ab7c-8b856604f768 None None] Agent rpc_loop -
> iteration:4722 completed. Processed ports statistics: {'regular':
> {'updated': 0, 'added': 0, 'removed': 0}}. Elapsed:0.086 from (pid=12775)
> loop_count_and_wait
> /opt/stack/neutron/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py:1680
>
> 2016-06-03 12:51:58.256 DEBUG
> neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent
> [req-1258bbbc-7211-4cfd-ab7c-8b856604f768 None None] Agent rpc_loop -
> iteration:4723 started from (pid=12775) rpc_loop
> /opt/stack/neutron/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py:1732
>
> 2016-06-03 12:51:58.258 DEBUG neutron.agent.linux.utils
> [req-1258bbbc-7211-4cfd-ab7c-8b856604f768 None None] Running command
> (rootwrap daemon): ['ovs-ofctl', '-O openflow13', 'dump-flows', 'br-int',
> 'table=23'] from (pid=12775) execute_rootwrap_daemon
> /opt/stack/neutron/neutron/agent/linux/utils.py:101
>
> 2016-06-03 12:51:58.311 ERROR neutron.agent.linux.utils
> [req-1258bbbc-7211-4cfd-ab7c-8b856604f768 None None]
>
> Command: ['ovs-ofctl', '-O openflow13', 'dump-flows', 'br-int', 'table=23']
>
> Exit code: 1
>
> Stdin:
>
> Stdout:
>
> Stderr:
> 2016-06-03T12:51:58Z|00001|vconn|WARN|unix:/var/run/openvswitch/br-int.mgmt:
> version negotiation failed (we support version 0x04, peer supports version
> 0x01)
>
> ovs-ofctl: br-int: failed to connect to socket (Broken pipe)
>
>
>
> 2016-06-03 12:51:58.323 ERROR
> networking_sfc.services.sfc.common.ovs_ext_lib
> [req-1258bbbc-7211-4cfd-ab7c-8b856604f768 None None]
>
> Command: ['ovs-ofctl', '-O openflow13', 'dump-flows', 'br-int', 'table=23']
>
> Exit code: 1
>
> Stdin:
>
> Stdout:
>
> Stderr:
> 2016-06-03T12:51:58Z|00001|vconn|WARN|unix:/var/run/openvswitch/br-int.mgmt:
> version negotiation failed (we support version 0x04, peer supports version
> 0x01)
>
> ovs-ofctl: br-int: failed to connect to socket (Broken pipe)
>
>
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib Traceback (most recent call
> last):
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib   File
> "/opt/stack/networking-sfc/networking_sfc/services/sfc/common/ovs_ext_lib.py",
> line 125, in run_ofctl
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib
> process_input=process_input)
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib   File
> "/opt/stack/neutron/neutron/agent/linux/utils.py", line 159, in execute
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib     raise RuntimeError(m)
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib RuntimeError:
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib Command: ['ovs-ofctl', '-O
> openflow13', 'dump-flows', 'br-int', 'table=23']
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib Exit code: 1
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib Stdin:
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib Stdout:
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib Stderr:
> 2016-06-03T12:51:58Z|00001|vconn|WARN|unix:/var/run/openvswitch/br-int.mgmt:
> version negotiation failed (we support version 0x04, peer supports version
> 0x01)
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib ovs-ofctl: br-int: failed to
> connect to socket (Broken pipe)
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib
>
> 2016-06-03 12:51:58.323 TRACE
> networking_sfc.services.sfc.common.ovs_ext_lib
>
> 2016-06-03 12:51:58.335 ERROR
> networking_sfc.services.sfc.common.ovs_ext_lib
> [req-1258bbbc-7211-4cfd-ab7c-8b856604f768 None None] Unable to execute
> ['ovs-ofctl', '-O openflow13', 'dump-flows', 'br-int', 'table=23'].
>
> 2016-06-03 12:51:58.337 WARNING
> neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent
> [req-1258bbbc-7211-4cfd-ab7c-8b856604f768 None None] OVS is dead.
> OVSNeutronAgent will keep running and checking OVS status periodically.
>
> 2016-06-03 12:51:58.341 DEBUG
> neutron.plugins.ml2.drivers.openvswitch.agent.ovs_neutron_agent
> [req-1258bbbc-7211-4cfd-ab7c-8b856604f768 None None] Agent rpc_loop -
> iteration:4723 completed. Processed ports statistics: {'regular':
> {'updated': 0, 'added': 0, 'removed': 0}}. Elapsed:0.085 from (pid=12775)
> loop_count_and_wait
> /opt/stack/neutron/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py:1680
>
>
>
>
>
>
>
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