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Posted to users@cloudstack.apache.org by Luca Salvatore <Lu...@ninefold.com> on 2013/10/04 01:15:37 UTC
Network offering for GRE
I'm trying to test getting cloudstack 4.1 to build some GRE tunnels between zones.
I have two zones and a Xen server in each. I have sdn.ovs.controller set to true and separate physical interfaces configured for management traffic and GRE traffic.
When I deploy a VM in each zone I can see interfaces on the VMs called OVSTunnel… So I think it is all working well.
I want to overlay a layer 2 network across a layer 3 network, but just not sure how cloudstack does this. It doesn't seem to be working at the moment.
Do I need to create some type of special network service offering to make this happen? The only 'virtual networking' options I see is Nicira and BigSwitch.
For it to be layer 2, would I need to have each zone using the same subnet? Or should I assign a second NIC to each VM for the purpose of the GRE?
Thanks
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Re: Network offering for GRE
Posted by Nguyen Anh Tu <ng...@gmail.com>.
2013/10/4 Luca Salvatore <Lu...@ninefold.com>
> For it to be proper layer 2 over layer 3 the VMs in each zone would need
> to be on the same subnet. That way they can ARP for a VM in a different
> zone and traffic would use the GRE tunnel.
>
Ah... yes, sure.
--
N.g.U.y.e.N.A.n.H.t.U
Re: Network offering for GRE
Posted by Luca Salvatore <Lu...@ninefold.com>.
What I mean is that, the GRE tunnel is build between the XenServers OVS.
The XenSevers would need public IPs between them for connectivity over the
L3 network. This is normal for GRE end points.
However the VMs inside the XenServer don't know anything about the GRE.
For it to be proper layer 2 over layer 3 the VMs in each zone would need
to be on the same subnet. That way they can ARP for a VM in a different
zone and traffic would use the GRE tunnel.
---
On 4/10/13 2:09 PM, "Nguyen Anh Tu" <ng...@gmail.com> wrote:
>2013/10/4 Luca Salvatore <Lu...@ninefold.com>
>
>> So are you saying in version 4.1 it is currently not working? WHat
>> version are the patches available in?
>>
>> Yes, I'm working on sdnextensions branch, which are not merged to any
>release branch.
>
>
>> Any thoughts on how it will work between zones? E.g. Layer 2 over
>>layer 3?
>> Should we assign the same Subnets to each zone?
>>
>
>Not sure if I understand your question correctly. Between zones it still
>works I think, because GRE uses publicIP when create tunnels. Of course
>zones must have the same hypervisor, and hosts must reach each other.
>
>
>--
>
>N.g.U.y.e.N.A.n.H.t.U
Re: Network offering for GRE
Posted by Nguyen Anh Tu <ng...@gmail.com>.
2013/10/4 Luca Salvatore <Lu...@ninefold.com>
> So are you saying in version 4.1 it is currently not working? WHat
> version are the patches available in?
>
> Yes, I'm working on sdnextensions branch, which are not merged to any
release branch.
> Any thoughts on how it will work between zones? E.g. Layer 2 over layer 3?
> Should we assign the same Subnets to each zone?
>
Not sure if I understand your question correctly. Between zones it still
works I think, because GRE uses publicIP when create tunnels. Of course
zones must have the same hypervisor, and hosts must reach each other.
--
N.g.U.y.e.N.A.n.H.t.U
Re: Network offering for GRE
Posted by Luca Salvatore <Lu...@ninefold.com>.
So are you saying in version 4.1 it is currently not working? WHat
version are the patches available in?
Any thoughts on how it will work between zones? E.g. Layer 2 over layer 3?
Should we assign the same Subnets to each zone?
--
Luca
On 4/10/13 11:19 AM, "Nguyen Anh Tu" <ng...@gmail.com> wrote:
>2013/10/4 Luca Salvatore <Lu...@ninefold.com>
>
>>
>> I want to overlay a layer 2 network across a layer 3 network, but just
>>not
>> sure how cloudstack does this. It doesn't seem to be working at the
>>moment.
>> Do I need to create some type of special network service offering to
>>make
>> this happen? The only 'virtual networking' options I see is Nicira and
>> BigSwitch.
>
>
>Hi Luca,
>
>At GSoC period, I worked on enhancing GRE controller. I submitted patches
>to review board for these issue:
>+ make GRE support for XCP
>+ add L3 services (load balancing, port forwarding and staticNAT) to GRE
>+ make GRE support for KVM
>
>All patches are on the way to review and test.
>
>Thanks,
>
>
>--
>
>N.g.U.y.e.N.A.n.H.t.U
Re: Network offering for GRE
Posted by Nguyen Anh Tu <ng...@gmail.com>.
2013/10/4 Luca Salvatore <Lu...@ninefold.com>
>
> I want to overlay a layer 2 network across a layer 3 network, but just not
> sure how cloudstack does this. It doesn't seem to be working at the moment.
> Do I need to create some type of special network service offering to make
> this happen? The only 'virtual networking' options I see is Nicira and
> BigSwitch.
Hi Luca,
At GSoC period, I worked on enhancing GRE controller. I submitted patches
to review board for these issue:
+ make GRE support for XCP
+ add L3 services (load balancing, port forwarding and staticNAT) to GRE
+ make GRE support for KVM
All patches are on the way to review and test.
Thanks,
--
N.g.U.y.e.N.A.n.H.t.U