Hi Olivier, Sorry for the delay. It is indeed possible to have the topology described, however bear in mind a couple of things.
First of all, you need to enable Proxy Map Reply since LISPmob doesn't implement any synchronization mechanism across xTRs and thus it is not able to reply with a full Map Reply (containing the RLOCs for all the xTRs). Second, you need to ensure that the xTRs do not overwrite each other during the Map Register process, since Map Registers from the xTRs will have the same EID prefix but different locator-sets. For that you have two options, one is to modify LISPmob to add the merge-semantics bit to the Map Register and then use a Map Server that supports merge-semantics in order to combine the Map Registers from the two xTRs. The other option is to disable Map Register on LISPmob (just use a dummy address on the "map-server" conf field) and then configure statically the Map Server with the appropriate mapping for the LISP site. The second option will be probably the easiest. Finally, although the incoming traffic will reach the host no matter which xTR receives it, the outgoing traffic should be handled at host level (i.e. by means adding extra routes with different gateways) if you want to balance among the two xTRs. Hope this helps, Alberto On Tue, Apr 21, 2015 at 10:05 AM, Olivier Hault (Level IT) < [email protected]> wrote: > Exactly > > > Olivier > ------------------------------ > *De :* Alberto Rodriguez-Natal <[email protected]> > *Envoyé :* mardi 21 avril 2015 09:46 > *À :* Olivier Hault (Level IT) > *Cc :* [email protected] > *Objet :* Re: [LISPmob-users] Configuring a multihomed LISP site with two > xTRs > > Hi Olivier, > > Just to clarify, your topology would look like something like this? > > -------------- (subnet_ip_x) xTR > (public_ip_a) ----- Internet > | > Host (subnet_ip_z) ----- Switch > | > -------------- (subnet_ip_y) xTR > (public_ip_b) ----- Internet > > Thanks, > Alberto > > > On Mon, Apr 20, 2015 at 11:44 PM, Olivier Hault (Level IT) < > [email protected]> wrote: > >> Hello, >> >> >> I can see in the FAQ on LISPmob website that OpenWRT multihoming is >> possible with a single router, but what's about using two OpenWRT routers >> to provide multihoming ? >> >> >> In others words, does is possible to configure a multihomed LISP site >> with two xTRs (one IPv4 RLOCS per XTR and a single shared IPv4 EID subnet) ? >> >> >> Kind regards, >> >> Olivier Hault >> >> Level IT - www.level-it.be >> > >
