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Posted to dev@cloudstack.apache.org by lifuhui <gd...@hotmail.com> on 2014/07/14 05:02:53 UTC

KVM with OVS GRE has been supported on 4.3 release ?

Hello, everyone, 
Has anyone used OVS GRE with KVM on 4.3 release for isolation guest network ?
Why there is no code support such as in 

private String getGreEndpointIP(Host host, Network nw) 
...
switch (hvType) {
        case XenServer:
            String label = physNetTT.getXenNetworkLabel();
            if ((label != null) && (!label.equals(""))) {
                physNetLabel = label;
            }
            break;
        default:
            throw new CloudRuntimeException("Hypervisor " +
                    hvType.toString() +
                    " unsupported by OVS Tunnel Manager");
...

PS: Using 4.3 release code

If not support, why a release doc has mentioned as below:

3.4 The OVS Plugin
3.4.1 Introduction to the OVS Plugin
The OVS plugin is the native SDN implementations in CloudStack, using GRE isolation method. The plugin can be
used by CloudStack to implement isolated guest networks and to provide additional services like NAT, port forwarding
and load balancing.
Features of the OVS Plugin
The following table lists the CloudStack network services provided by the OVS Plugin.
Network Service
Virtual Networking
Static NAT
Port Forwarding
Load Balancing
CloudStack version
>= 4.0
>= 4.3
>= 4.3
>= 4.3
Table: Supported Services
Note: The Virtual Networking service was originally called ‘Connectivity’ in CloudStack 4.0
The following hypervisors are supported by the OVS Plugin.
Hypervisor
XenServer
KVM
CloudStack version
>= 4.0
>= 4.3
Table: Supported Hypervisors

Thanks

 		 	   		  

Re:Re: KVM with OVS GRE has been supported on 4.3 release ?

Posted by cloud <cl...@163.com>.
Hi Sebastien,
Have u involved Tuna, I just want to ask which patch have resolved and I want to patch and try it.

Thanks


At 2014-07-16 00:01:33, "Sebastien Goasguen" <ru...@gmail.com> wrote:
>Let me wrap in Tuna in this discussion, since I believe he is the one who did the KVM support for the GRE controller.
>
>On Jul 15, 2014, at 1:53 AM, Claus Kalle <ka...@uni-koeln.de> wrote:
>
>> Hi all,
>> 
>> I found out (also in mail exchange with Murali) that there is really no
>> support for management of the GRE tunnel itsself in 4.3.
>> 
>> If you setup the GRE tunnel(s) yourself statically (which I did) between
>> the KVM hosts, everything works out well for transporting the guest
>> traffic over the tunnel(s).
>> However still the only "network service" done by the ovs plugin is
>> "Virtual Networking", all the others being promissed in the doc do not
>> appear as choice in the respective dialog.
>> 
>> Murali mentioned a passible 4.3.1 pacth release fixing this and that...
>> 
>> Best regards, Claus
>> 
>> schrieb Chiradeep Vittal am 14.07.2014 19:34 Uhr:
>>> I believe there is a bug in 4.3 (but fixed in 4.4)
>>> 
>>> From: lifuhui <gdblessu99999@hotmail.com <ma...@hotmail.com>>
>>> Reply-To: "dev@cloudstack.apache.org <ma...@cloudstack.apache.org>"
>>> <dev@cloudstack.apache.org <ma...@cloudstack.apache.org>>
>>> Date: Sunday, July 13, 2014 at 8:02 PM
>>> To: "dev@cloudstack.apache.org <ma...@cloudstack.apache.org>"
>>> <dev@cloudstack.apache.org <ma...@cloudstack.apache.org>>
>>> Subject: KVM with OVS GRE has been supported on 4.3 release ?
>>> 
>>> Hello, everyone,
>>> Has anyone used OVS GRE with KVM on 4.3 release for isolation guest
>>> network ?
>>> Why there is no code support such as in
>>> 
>>> private String getGreEndpointIP(Host host, Network nw)
>>> ...
>>> switch (hvType) {
>>>        case XenServer:
>>>            String label = physNetTT.getXenNetworkLabel();
>>>            if ((label != null) && (!label.equals(""))) {
>>>                physNetLabel = label;
>>>            }
>>>            break;
>>>        default:
>>>            throw new CloudRuntimeException("Hypervisor " +
>>>                    hvType.toString() +
>>>                    " unsupported by OVS Tunnel Manager");
>>> ...
>>> 
>>> PS: Using 4.3 release code
>>> 
>>> If not support, why a release doc has mentioned as below:
>>> 
>>> 3.4 The OVS Plugin
>>> 3.4.1 Introduction to the OVS Plugin
>>> The OVS plugin is the native SDN implementations in CloudStack, using
>>> GRE isolation method. The plugin can be
>>> used by CloudStack to implement isolated guest networks and to provide
>>> additional services like NAT, port forwarding
>>> and load balancing.
>>> Features of the OVS Plugin
>>> The following table lists the CloudStack network services provided by
>>> the OVS Plugin.
>>> Network Service
>>> Virtual Networking
>>> Static NAT
>>> Port Forwarding
>>> Load Balancing
>>> CloudStack version
>>> 
>>>    = 4.0
>>>    = 4.3
>>>    = 4.3
>>>    = 4.3
>>> 
>>> Table: Supported Services
>>> Note: The Virtual Networking service was originally called
>>> ‘Connectivity’ in CloudStack 4.0
>>> The following hypervisors are supported by the OVS Plugin.
>>> Hypervisor
>>> XenServer
>>> KVM
>>> CloudStack version
>>> 
>>>    = 4.0
>>>    = 4.3
>>> 
>>> Table: Supported Hypervisors
>>> 
>>> Thanks
>>> 
>>> 
>> 
>> -- 
>> Claus Kalle, Universitaet zu Koeln, RRZK                   i   i
>>             Leiter Abteilung Systeme                      I   I
>>             E-Mail: kalle@uni-koeln.DE                    M   M
>>             Fon: 0221 470 89581                          /IIIII\
>>             Fax: 0221 470 89625                          MiMiMiM
>>             Snail-Mail: Weyertal 121, 50931 Koeln        MIMiMiM
>

Re: KVM with OVS GRE has been supported on 4.3 release ?

Posted by Sebastien Goasguen <ru...@gmail.com>.
Let me wrap in Tuna in this discussion, since I believe he is the one who did the KVM support for the GRE controller.

On Jul 15, 2014, at 1:53 AM, Claus Kalle <ka...@uni-koeln.de> wrote:

> Hi all,
> 
> I found out (also in mail exchange with Murali) that there is really no
> support for management of the GRE tunnel itsself in 4.3.
> 
> If you setup the GRE tunnel(s) yourself statically (which I did) between
> the KVM hosts, everything works out well for transporting the guest
> traffic over the tunnel(s).
> However still the only "network service" done by the ovs plugin is
> "Virtual Networking", all the others being promissed in the doc do not
> appear as choice in the respective dialog.
> 
> Murali mentioned a passible 4.3.1 pacth release fixing this and that...
> 
> Best regards, Claus
> 
> schrieb Chiradeep Vittal am 14.07.2014 19:34 Uhr:
>> I believe there is a bug in 4.3 (but fixed in 4.4)
>> 
>> From: lifuhui <gdblessu99999@hotmail.com <ma...@hotmail.com>>
>> Reply-To: "dev@cloudstack.apache.org <ma...@cloudstack.apache.org>"
>> <dev@cloudstack.apache.org <ma...@cloudstack.apache.org>>
>> Date: Sunday, July 13, 2014 at 8:02 PM
>> To: "dev@cloudstack.apache.org <ma...@cloudstack.apache.org>"
>> <dev@cloudstack.apache.org <ma...@cloudstack.apache.org>>
>> Subject: KVM with OVS GRE has been supported on 4.3 release ?
>> 
>> Hello, everyone,
>> Has anyone used OVS GRE with KVM on 4.3 release for isolation guest
>> network ?
>> Why there is no code support such as in
>> 
>> private String getGreEndpointIP(Host host, Network nw)
>> ...
>> switch (hvType) {
>>        case XenServer:
>>            String label = physNetTT.getXenNetworkLabel();
>>            if ((label != null) && (!label.equals(""))) {
>>                physNetLabel = label;
>>            }
>>            break;
>>        default:
>>            throw new CloudRuntimeException("Hypervisor " +
>>                    hvType.toString() +
>>                    " unsupported by OVS Tunnel Manager");
>> ...
>> 
>> PS: Using 4.3 release code
>> 
>> If not support, why a release doc has mentioned as below:
>> 
>> 3.4 The OVS Plugin
>> 3.4.1 Introduction to the OVS Plugin
>> The OVS plugin is the native SDN implementations in CloudStack, using
>> GRE isolation method. The plugin can be
>> used by CloudStack to implement isolated guest networks and to provide
>> additional services like NAT, port forwarding
>> and load balancing.
>> Features of the OVS Plugin
>> The following table lists the CloudStack network services provided by
>> the OVS Plugin.
>> Network Service
>> Virtual Networking
>> Static NAT
>> Port Forwarding
>> Load Balancing
>> CloudStack version
>> 
>>    = 4.0
>>    = 4.3
>>    = 4.3
>>    = 4.3
>> 
>> Table: Supported Services
>> Note: The Virtual Networking service was originally called
>> ‘Connectivity’ in CloudStack 4.0
>> The following hypervisors are supported by the OVS Plugin.
>> Hypervisor
>> XenServer
>> KVM
>> CloudStack version
>> 
>>    = 4.0
>>    = 4.3
>> 
>> Table: Supported Hypervisors
>> 
>> Thanks
>> 
>> 
> 
> -- 
> Claus Kalle, Universitaet zu Koeln, RRZK                   i   i
>             Leiter Abteilung Systeme                      I   I
>             E-Mail: kalle@uni-koeln.DE                    M   M
>             Fon: 0221 470 89581                          /IIIII\
>             Fax: 0221 470 89625                          MiMiMiM
>             Snail-Mail: Weyertal 121, 50931 Koeln        MIMiMiM


Re: KVM with OVS GRE has been supported on 4.3 release ?

Posted by Claus Kalle <ka...@uni-koeln.de>.
Hi all,

I found out (also in mail exchange with Murali) that there is really no
support for management of the GRE tunnel itsself in 4.3.

If you setup the GRE tunnel(s) yourself statically (which I did) between
the KVM hosts, everything works out well for transporting the guest
traffic over the tunnel(s).
However still the only "network service" done by the ovs plugin is
"Virtual Networking", all the others being promissed in the doc do not
appear as choice in the respective dialog.

Murali mentioned a passible 4.3.1 pacth release fixing this and that...

Best regards, Claus

schrieb Chiradeep Vittal am 14.07.2014 19:34 Uhr:
> I believe there is a bug in 4.3 (but fixed in 4.4)
> 
> From: lifuhui <gdblessu99999@hotmail.com <ma...@hotmail.com>>
> Reply-To: "dev@cloudstack.apache.org <ma...@cloudstack.apache.org>"
> <dev@cloudstack.apache.org <ma...@cloudstack.apache.org>>
> Date: Sunday, July 13, 2014 at 8:02 PM
> To: "dev@cloudstack.apache.org <ma...@cloudstack.apache.org>"
> <dev@cloudstack.apache.org <ma...@cloudstack.apache.org>>
> Subject: KVM with OVS GRE has been supported on 4.3 release ?
> 
> Hello, everyone,
> Has anyone used OVS GRE with KVM on 4.3 release for isolation guest
> network ?
> Why there is no code support such as in
> 
> private String getGreEndpointIP(Host host, Network nw)
> ...
> switch (hvType) {
>         case XenServer:
>             String label = physNetTT.getXenNetworkLabel();
>             if ((label != null) && (!label.equals(""))) {
>                 physNetLabel = label;
>             }
>             break;
>         default:
>             throw new CloudRuntimeException("Hypervisor " +
>                     hvType.toString() +
>                     " unsupported by OVS Tunnel Manager");
> ...
> 
> PS: Using 4.3 release code
> 
> If not support, why a release doc has mentioned as below:
> 
> 3.4 The OVS Plugin
> 3.4.1 Introduction to the OVS Plugin
> The OVS plugin is the native SDN implementations in CloudStack, using
> GRE isolation method. The plugin can be
> used by CloudStack to implement isolated guest networks and to provide
> additional services like NAT, port forwarding
> and load balancing.
> Features of the OVS Plugin
> The following table lists the CloudStack network services provided by
> the OVS Plugin.
> Network Service
> Virtual Networking
> Static NAT
> Port Forwarding
> Load Balancing
> CloudStack version
> 
>     = 4.0
>     = 4.3
>     = 4.3
>     = 4.3
> 
> Table: Supported Services
> Note: The Virtual Networking service was originally called
> ‘Connectivity’ in CloudStack 4.0
> The following hypervisors are supported by the OVS Plugin.
> Hypervisor
> XenServer
> KVM
> CloudStack version
> 
>     = 4.0
>     = 4.3
> 
> Table: Supported Hypervisors
> 
> Thanks
> 
>      

-- 
Claus Kalle, Universitaet zu Koeln, RRZK                   i   i
             Leiter Abteilung Systeme                      I   I
             E-Mail: kalle@uni-koeln.DE                    M   M
             Fon: 0221 470 89581                          /IIIII\
             Fax: 0221 470 89625                          MiMiMiM
             Snail-Mail: Weyertal 121, 50931 Koeln        MIMiMiM

Re:Re: KVM with OVS GRE has been supported on 4.3 release ?

Posted by cloud <cl...@163.com>.
Is 4.4 has new System VM templates?
When I use 4.3 system vm templates in 4.4, I got exception in SVM and CVM in cloud.log as below.
Any advice? Thanks



Exception in thread "main" java.lang.UnsupportedClassVersionError: com/cloud/agent/AgentShell : Unsupported major.minor version 51.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: com.cloud.agent.AgentShell. Program will exit.
^C






At 2014-07-15 08:59:46, "Murali Reddy" <Mu...@citrix.com> wrote:
>Yes. 4.4 has the support for KVM.
>
>From: lifuhui <gd...@hotmail.com>>
>Date: Tuesday, 15 July 2014 12:34 PM
>To: "dev@cloudstack.apache.org<ma...@cloudstack.apache.org>" <de...@cloudstack.apache.org>>
>Cc: Murali Reddy <mu...@citrix.com>>, Claus Kalle <ka...@uni-koeln.de>>
>Subject: RE: KVM with OVS GRE has been supported on 4.3 release ?
>
>Did u mean 4.4 will support it ?
>
>> From: Chiradeep.Vittal@citrix.com<ma...@citrix.com>
>> To: dev@cloudstack.apache.org<ma...@cloudstack.apache.org>
>> CC: Murali.Reddy@citrix.com<ma...@citrix.com>; kalle@uni-koeln.de<ma...@uni-koeln.de>
>> Subject: Re: KVM with OVS GRE has been supported on 4.3 release ?
>> Date: Mon, 14 Jul 2014 17:34:11 +0000
>>
>> I believe there is a bug in 4.3 (but fixed in 4.4)
>>
>> From: lifuhui <gd...@hotmail.com>>
>> Reply-To: "dev@cloudstack.apache.org<ma...@cloudstack.apache.org>" <de...@cloudstack.apache.org>>
>> Date: Sunday, July 13, 2014 at 8:02 PM
>> To: "dev@cloudstack.apache.org<ma...@cloudstack.apache.org>" <de...@cloudstack.apache.org>>
>> Subject: KVM with OVS GRE has been supported on 4.3 release ?
>>
>> Hello, everyone,
>> Has anyone used OVS GRE with KVM on 4.3 release for isolation guest network ?
>> Why there is no code support such as in
>>
>> private String getGreEndpointIP(Host host, Network nw)
>> ...
>> switch (hvType) {
>> case XenServer:
>> String label = physNetTT.getXenNetworkLabel();
>> if ((label != null) && (!label.equals(""))) {
>> physNetLabel = label;
>> }
>> break;
>> default:
>> throw new CloudRuntimeException("Hypervisor " +
>> hvType.toString() +
>> " unsupported by OVS Tunnel Manager");
>> ...
>>
>> PS: Using 4.3 release code
>>
>> If not support, why a release doc has mentioned as below:
>>
>> 3.4 The OVS Plugin
>> 3.4.1 Introduction to the OVS Plugin
>> The OVS plugin is the native SDN implementations in CloudStack, using GRE isolation method. The plugin can be
>> used by CloudStack to implement isolated guest networks and to provide additional services like NAT, port forwarding
>> and load balancing.
>> Features of the OVS Plugin
>> The following table lists the CloudStack network services provided by the OVS Plugin.
>> Network Service
>> Virtual Networking
>> Static NAT
>> Port Forwarding
>> Load Balancing
>> CloudStack version
>> = 4.0
>> = 4.3
>> = 4.3
>> = 4.3
>> Table: Supported Services
>> Note: The Virtual Networking service was originally called ‘Connectivity’ in CloudStack 4.0
>> The following hypervisors are supported by the OVS Plugin.
>> Hypervisor
>> XenServer
>> KVM
>> CloudStack version
>> = 4.0
>> = 4.3
>> Table: Supported Hypervisors
>>
>> Thanks
>>
>>

Re: KVM with OVS GRE has been supported on 4.3 release ?

Posted by Murali Reddy <Mu...@citrix.com>.
Yes. 4.4 has the support for KVM.

From: lifuhui <gd...@hotmail.com>>
Date: Tuesday, 15 July 2014 12:34 PM
To: "dev@cloudstack.apache.org<ma...@cloudstack.apache.org>" <de...@cloudstack.apache.org>>
Cc: Murali Reddy <mu...@citrix.com>>, Claus Kalle <ka...@uni-koeln.de>>
Subject: RE: KVM with OVS GRE has been supported on 4.3 release ?

Did u mean 4.4 will support it ?

> From: Chiradeep.Vittal@citrix.com<ma...@citrix.com>
> To: dev@cloudstack.apache.org<ma...@cloudstack.apache.org>
> CC: Murali.Reddy@citrix.com<ma...@citrix.com>; kalle@uni-koeln.de<ma...@uni-koeln.de>
> Subject: Re: KVM with OVS GRE has been supported on 4.3 release ?
> Date: Mon, 14 Jul 2014 17:34:11 +0000
>
> I believe there is a bug in 4.3 (but fixed in 4.4)
>
> From: lifuhui <gd...@hotmail.com>>
> Reply-To: "dev@cloudstack.apache.org<ma...@cloudstack.apache.org>" <de...@cloudstack.apache.org>>
> Date: Sunday, July 13, 2014 at 8:02 PM
> To: "dev@cloudstack.apache.org<ma...@cloudstack.apache.org>" <de...@cloudstack.apache.org>>
> Subject: KVM with OVS GRE has been supported on 4.3 release ?
>
> Hello, everyone,
> Has anyone used OVS GRE with KVM on 4.3 release for isolation guest network ?
> Why there is no code support such as in
>
> private String getGreEndpointIP(Host host, Network nw)
> ...
> switch (hvType) {
> case XenServer:
> String label = physNetTT.getXenNetworkLabel();
> if ((label != null) && (!label.equals(""))) {
> physNetLabel = label;
> }
> break;
> default:
> throw new CloudRuntimeException("Hypervisor " +
> hvType.toString() +
> " unsupported by OVS Tunnel Manager");
> ...
>
> PS: Using 4.3 release code
>
> If not support, why a release doc has mentioned as below:
>
> 3.4 The OVS Plugin
> 3.4.1 Introduction to the OVS Plugin
> The OVS plugin is the native SDN implementations in CloudStack, using GRE isolation method. The plugin can be
> used by CloudStack to implement isolated guest networks and to provide additional services like NAT, port forwarding
> and load balancing.
> Features of the OVS Plugin
> The following table lists the CloudStack network services provided by the OVS Plugin.
> Network Service
> Virtual Networking
> Static NAT
> Port Forwarding
> Load Balancing
> CloudStack version
> = 4.0
> = 4.3
> = 4.3
> = 4.3
> Table: Supported Services
> Note: The Virtual Networking service was originally called ‘Connectivity’ in CloudStack 4.0
> The following hypervisors are supported by the OVS Plugin.
> Hypervisor
> XenServer
> KVM
> CloudStack version
> = 4.0
> = 4.3
> Table: Supported Hypervisors
>
> Thanks
>
>

RE: KVM with OVS GRE has been supported on 4.3 release ?

Posted by lifuhui <gd...@hotmail.com>.
Did u mean 4.4 will support it ?

> From: Chiradeep.Vittal@citrix.com
> To: dev@cloudstack.apache.org
> CC: Murali.Reddy@citrix.com; kalle@uni-koeln.de
> Subject: Re: KVM with OVS GRE has been supported on 4.3 release ?
> Date: Mon, 14 Jul 2014 17:34:11 +0000
> 
> I believe there is a bug in 4.3 (but fixed in 4.4)
> 
> From: lifuhui <gd...@hotmail.com>>
> Reply-To: "dev@cloudstack.apache.org<ma...@cloudstack.apache.org>" <de...@cloudstack.apache.org>>
> Date: Sunday, July 13, 2014 at 8:02 PM
> To: "dev@cloudstack.apache.org<ma...@cloudstack.apache.org>" <de...@cloudstack.apache.org>>
> Subject: KVM with OVS GRE has been supported on 4.3 release ?
> 
> Hello, everyone,
> Has anyone used OVS GRE with KVM on 4.3 release for isolation guest network ?
> Why there is no code support such as in
> 
> private String getGreEndpointIP(Host host, Network nw)
> ...
> switch (hvType) {
>         case XenServer:
>             String label = physNetTT.getXenNetworkLabel();
>             if ((label != null) && (!label.equals(""))) {
>                 physNetLabel = label;
>             }
>             break;
>         default:
>             throw new CloudRuntimeException("Hypervisor " +
>                     hvType.toString() +
>                     " unsupported by OVS Tunnel Manager");
> ...
> 
> PS: Using 4.3 release code
> 
> If not support, why a release doc has mentioned as below:
> 
> 3.4 The OVS Plugin
> 3.4.1 Introduction to the OVS Plugin
> The OVS plugin is the native SDN implementations in CloudStack, using GRE isolation method. The plugin can be
> used by CloudStack to implement isolated guest networks and to provide additional services like NAT, port forwarding
> and load balancing.
> Features of the OVS Plugin
> The following table lists the CloudStack network services provided by the OVS Plugin.
> Network Service
> Virtual Networking
> Static NAT
> Port Forwarding
> Load Balancing
> CloudStack version
> = 4.0
> = 4.3
> = 4.3
> = 4.3
> Table: Supported Services
> Note: The Virtual Networking service was originally called ‘Connectivity’ in CloudStack 4.0
> The following hypervisors are supported by the OVS Plugin.
> Hypervisor
> XenServer
> KVM
> CloudStack version
> = 4.0
> = 4.3
> Table: Supported Hypervisors
> 
> Thanks
> 
> 
 		 	   		  

Re: KVM with OVS GRE has been supported on 4.3 release ?

Posted by Chiradeep Vittal <Ch...@citrix.com>.
I believe there is a bug in 4.3 (but fixed in 4.4)

From: lifuhui <gd...@hotmail.com>>
Reply-To: "dev@cloudstack.apache.org<ma...@cloudstack.apache.org>" <de...@cloudstack.apache.org>>
Date: Sunday, July 13, 2014 at 8:02 PM
To: "dev@cloudstack.apache.org<ma...@cloudstack.apache.org>" <de...@cloudstack.apache.org>>
Subject: KVM with OVS GRE has been supported on 4.3 release ?

Hello, everyone,
Has anyone used OVS GRE with KVM on 4.3 release for isolation guest network ?
Why there is no code support such as in

private String getGreEndpointIP(Host host, Network nw)
...
switch (hvType) {
        case XenServer:
            String label = physNetTT.getXenNetworkLabel();
            if ((label != null) && (!label.equals(""))) {
                physNetLabel = label;
            }
            break;
        default:
            throw new CloudRuntimeException("Hypervisor " +
                    hvType.toString() +
                    " unsupported by OVS Tunnel Manager");
...

PS: Using 4.3 release code

If not support, why a release doc has mentioned as below:

3.4 The OVS Plugin
3.4.1 Introduction to the OVS Plugin
The OVS plugin is the native SDN implementations in CloudStack, using GRE isolation method. The plugin can be
used by CloudStack to implement isolated guest networks and to provide additional services like NAT, port forwarding
and load balancing.
Features of the OVS Plugin
The following table lists the CloudStack network services provided by the OVS Plugin.
Network Service
Virtual Networking
Static NAT
Port Forwarding
Load Balancing
CloudStack version
= 4.0
= 4.3
= 4.3
= 4.3
Table: Supported Services
Note: The Virtual Networking service was originally called ‘Connectivity’ in CloudStack 4.0
The following hypervisors are supported by the OVS Plugin.
Hypervisor
XenServer
KVM
CloudStack version
= 4.0
= 4.3
Table: Supported Hypervisors

Thanks