Hi Satoru, It seems most issues are resolved, except one below.
Regards, Behcet On Fri, May 23, 2014 at 3:39 AM, Satoru Matsushima <satoru.matsush...@gmail.com> wrote: > Behcet, thanks for clarifying more clearly. :) > > > On Fri, May 23, 2014 at 4:15 AM, Behcet Sarikaya <sarikaya2...@gmail.com> > wrote: > -- snip -- > >> >> > >> >> > Ah, I see what you mean. Yes, I'm sure that RR/RS just only know about >> > routes, nor whole mobility information exists. When I see a node which >> > plays >> > MME role, the node could also be a BGP speaker to export the mobility >> > info >> > transformed to the routes. >> > >> >> So MME should be BGP speaker? >> If not then what would happen? >> > > Precisely, say MME, which 3GPP defined mobility management entity, doesn't > have the BGP function. IMO, If the entity can be coexist with BGP in a > single node, an interface for exposing/retrieving mobility information would > be required between them. > > >> >> > What do you mean by "topologically incorrect"? >> > Is that the assigned prefixes are disordered to be aggregated? >> > >> >> Yes. UE moves to another EPC-E which supports a different prefix than UE >> has? >> You need to keep host-based prefixes as routes, is there another way? >> > > In the draft, as long as an UE keeps same prefix during hand-over among > EPC-E routers, those routers belong to a same group that is expected to > preserve same prefix for the UE. It should be initial attach when the UE is > attached to different EPC-E and assigned different prefix from previous one. > Please read section 3.3 and 3.4 of the draft. > Attach is OK but I am talking about handover. In Section 3.4 you say: Thus, UE's address is unchanged even after handover. I don't understand your statement those routers belong to a same group that is expected to preserve same prefix for the UE. I think you mentioned this before in another conversation that EPC-E's will be assigned prefixes based on geographical division. If a UE moves to a different region, how could the routers preserve the same prefix for the UE without host routes or host prefixes? Regards, Behcet > cheers, > --satoru _______________________________________________ dmm mailing list dmm@ietf.org https://www.ietf.org/mailman/listinfo/dmm
