----- Original Message ----- > From: "Livnat Peer" <[email protected]> > To: "Alon Bar-Lev" <[email protected]> > Cc: [email protected] > Sent: Thursday, August 30, 2012 10:16:05 PM > Subject: Re: [Engine-devel] network subnet > > On 30/08/12 21:39, Alon Bar-Lev wrote: > > > > > > ----- Original Message ----- > >> From: "Livnat Peer" <[email protected]> > >> To: [email protected] > >> Sent: Thursday, August 30, 2012 3:22:29 PM > >> Subject: [Engine-devel] network subnet > >> > >> Hi All, > >> > >> Today when a user wants to define a network subnet mask, he does > >> it > >> when > >> he attaches the network to a host NIC. > >> > >> I was wondering if there is a reason not to define the network > >> subnet > >> on > >> the logical network entity (Data center level). > >> > >> Thanks, Livnat > > > > Hello, > > > > I am sorry, maybe I do not understand... the IP scheme enforces the > > use of address mask in order to properly route packets. > > of course. My proposal is related to our user usage of the system. > Today > ovirt user, who wants to define a network subnet, has to type the > subnet > per host (per network), I think the user should only define it once > on > the logical network entity in the Data Center. > Propagating the value to all hosts is needed but it should be our > internal implementation detail. > > > > > Network mask is used in any case, I guess it can be dropped from > > configuration in favour of using the address class as mask, is > > that what you suggest? > > > > No, hope the above paragraph made it more clear. >
Hello, Then you assume that a logical network, which is actually layer 2 network in our implementation, has layer 3 characteristics, right? In our current implementation "data center logical network" is pure layer 2 segment aka layer 2 broadcast domain. One can use the same logical network for multiple layer 3 segments, which is totally valid and consistent with standard physical layer 2 setup. Unless I am missing something crucial, I would suggest to keep the consistent physical->virtual mapping, unless we emulate layer 3 switching. Layer 2 does not have layer 3 characteristics. Regards, Alon. _______________________________________________ Engine-devel mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/engine-devel
