> On Thu, Jul 17, 2014 at 10:03 PM, Dino Farinacci <[email protected]> wrote: > But when an EID is assigned to a node (either static or via DHCP) > > Is there a case in LISP that EID would be assigned to its interface rather > than to a node?
That is independent of LISP. I have done both while doing development and test. And a node can have multiple EIDs if one chooses to do that. In fact, a dual-stack host will have two EIDs, one IPv4 and one IPv6. > Somewhere, it is said that the behavior of network elements within a site > doesn't change, which is thought to be one of the major strong feature of > LISP. If that is the case, then the EID would be assigned to the interface > like with the current Internet. Right, there are no requirements how EIDs are assigned locally within a system. Remember, the EID is on a unchanged host. From that host's point of view, it is just an address. From the LISP site's point of view, that address is reachable via local routing. > and the node moves around inside of the LISP site, it is up to existing > mechanisms to allow the mobility. > > Assuming you really meant the node, not the interface, which existing > mechanism would allow the mobility? OSPF or ISIS? What I meant is the "IP address" is moving. Saying it that way means no matter how it is assigned on the local device, what is moving is the IP address. > If you meant, in fact, the interface but not the node in your discussion of > the EID assignment, do you mean a MIP like mechanism would provide the > mobility within a site? I didn't and don't need to make that distinction. > So in the static case, that would mean a host route would need to be injected > into the IGP if the node's address stays the same > > I cannot catch what you exactly mean here by 'injection'. Sorry... When a host 10.1.1.1 moves off subnet 10.1.0.0/16 to subnet 11.1.0.0/16, the routers attached to 11.1 need to advertise a 10.1.1.1/32 route into the routing system. > or in the DHCP case, the node gets a new address associated with the subnet > it just attached on and starts using that address (and all previous > connections are dropped). > > Yes, no special mobility is provided by LISP itself... > > So, in short, what mobility solution is provided by LISP in addition to the > existing mobility mechanisms? > > -- > DY There are different scopes of mobility. When you roam across LISP site, you use LISP mobility. When you roam within LISP sites you use IP-mobility or host routes. Dino _______________________________________________ lisp mailing list [email protected] https://www.ietf.org/mailman/listinfo/lisp
