On 8/26/14 12:08 PM, David F. Sire wrote:
Thans for your reply.
It's very helpful.
Note : It does not matter now but what wanted to do is to add a module
in the Open vSwitch code simulating ARP proxy for LISP tunnels. I read
and understood the code but I wonder if this module must be enable for
all vports in datapath or just for LISP vport.
Only for LISP vports, since they give you a layer 3 overlay and don't
forward ARP traffic.
-Lori
Please could you give me some guidance. Maybe I will do it later so I
won't use mininet scripts to automatically install flow rules
Thanks a lot,
David
2014-08-25 12:34 GMT+02:00 Lori Jakab <[email protected]
<mailto:[email protected]>>:
On 8/24/14 5:47 AM, David F. Sire wrote:
Hi,
I'm using LISP tunnels in Openvswitch and I read in REAME-lisp
that if "the VMs have IP addresses in the same subnet but the
hypervisors are separated by a router" in the network
topology, we need an ARP proxy.
Can you give us more detail about what you are trying to do?
Unless you really really want to work on an ARP proxy internal to
OVS, there may be other solutions.
For example, you could use /32 (v4) or /128 (v6) addresses in your
VMs to avoid having two communicating hosts being in the same
subnet and sending ARP requests if the first place.
Alternatively, if you use an external controller, or you have a
static environment, you can implement an “ARP responder” with flow
rules only, as is done by OpenStack:
https://wiki.openstack.org/wiki/Ovs-flow-logic#OVS_flows_logic_with_local_ARP_responder
You can find detailed examples in the following blog post, look
for Table 105 - ARP responder:
http://dtucker.co.uk/hack/building-a-router-with-openvswitch.html
Let us know if this helps with your use case, or please describe
what you’re trying to achieve.
HTH,
-Lori
What i want to do is to add this proxy in the code.
I have no idea how to do it.
Any help will be appreciated.
Thanks,
David
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