On 5/30/14, 8:07 PM, David Lo Bascio wrote:
I should create a LISP-type Ingress/Egress Tunnel Router using Open vSwitch...
that's the configuration:
- A PC with Open vSwitch installed has 2 physical interfaces (eth0, eth1) and
it musts behave as a LISP xTR; i'll call it OVS.
So far, so good...
- Host1 is in EID space, so it has an EID IP address on its eth0 interface and
it is connected to OVS'br0, which has an EID IP address belonging to the same
subnet of Host1.
OK...
- OVS'br1 is in RLOC space, so it has an RLOC IP address, in the same subnet of
Host2.
You don't need the extra bridge br1 in order to have a LISP xTR in node
'OVS'. You only need eth0 and a lisp0 interface configured as described
in README-lisp inside br0, and br0 configured with an EID address.
- Host2 is in RLOC space, so it has an RLOC IP address on its eth0 interface
and it's connected to OVS'br1.
In that case, Host 2 will see a LISP encapsulated packet, and will not
know what to do with it. If you want to communicate from Host1 with
another host, that other host needs to be in EID space. So you need a
symmetrical setup (a second xTR) to decapsulated packets and terminate
the tunnel.
In OVS, eth0 is attached to br0 and eth1 to br1; i have created on br1 the lisp
OF port and tunnel to Host2'eth0.
See above, br1 is not necassary, and the lisp tunnel interface should be
also part of br0.
How defining flows on br0 and br1 to exchange lisp packets between Host1 and
Host2?
Or better, how connecting br0 and br1 in OVS, so that traffic coming from Host1
and passing through OVS'eth0/br0 can arrive to br1/lisp interface?
You need two OVS nodes to exchange packets between Host1 and Host2.
HTH,
-Lori
Thank you very much!
David
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