On 06/08/2017 06:49 AM, Mark McConnaughay wrote:
Thanks Greg. I am working on an 'NFV' project which has a requirement to maintain the entire packet (L2 and up) on reception from
the NIC, forward to an 'on-box' VM and then forward to either another on-box VM or another VM on another physical box. The only way
I can think of doing this is to encapsulate the entire frame/packet in something like VxLAN. I know it's an odd use case but it is
what it is. I'd prefer to get this working with OvS rather than craft our own vSwitch with DPDK. We are using OvS with DPDK. It
looks like it should be possible with OvS but I haven't been able to figure it out so any guidance on how to do it or any indication
that it isn't really possible without significant 'shimming' of OvS constructs would be greatly appreciated.
Thanks,
- Mark
Please don't drop the list...
Well Vxlan communicates across a standard IP based connection. So I would
create two VMs and deploy OVS bridges
in each VM and then set up the standard VXLAN connection between the two.
There's no reason you can't run Open
vSwitch in a VM.
VM1 <---> ovs bridge <---> VXLAN (ip 10.0.0.1) <---> VXLAN (ip 10.0.0.2) <---> ovs
bridge <--->VM2
Something like this maybe?
- Greg
On Wed, Jun 7, 2017 at 7:26 PM, Greg Rose <[email protected]
<mailto:[email protected]>> wrote:
On 06/07/2017 08:01 AM, Mark McConnaughay wrote:
Hi, we have a use case to use OvS with VxLAN tunneling to a VM on the
same box.
It seems like this should work but I'm not able to configure it in OvS.
I've been able to construct VxLAN tunneling b/w two OvS instances on
two different machines and have VMs ping each other as
is the normal use case and for tunneling to an on-box VM I've tried
using an internal/isolated bridge with no physical
ports, but to no avail. Any suggestions on how to accomplish this or if
it is even possible? Thanks.
What is the use case for this? The purpose of vxlan and other tunneling
protocols is to make
physically distributed networks all appear to the user like they're on the
same subnet. If both VMs
are in the same 'box' (i.e. physical machine) then they can talk across a
local bridge. Is it just
for testing/development purposes?
Thanks,
- Greg
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