Hi Maria, Please see more inline.
> -----Original Message----- > From: NAPIERALA, MARIA H [mailto:[email protected]] > Sent: Friday, January 04, 2013 5:06 PM > To: Lucy yong; Bitar, Nabil N; Kireeti Kompella > Cc: [email protected]; Aldrin Isaac > Subject: RE: [nvo3] FW: New Version Notification for draft-yong-nvo3- > frwk-dpreq-addition-00.txt > > Lucy, > > > > This is about VM configuration models. The guest VM IPv4 > > configuration > > > could be: > > > A) local /32 IP address + /32 point-to-point route to a default > > > gateway + default route. > > > B) local /32 IP address + /24 to local Ethernet interface + > > default > > > route to an address on that /24. > > > > > > Both those models are supported by draft-ietf-l3vpn-end-system-00. > > [Lucy] When using the solution in the draft, you create one L3VPN > > instances for case A. > > Do you create one or more L3VPN instances for case B? > > I am not sure what you mean by "L3VPN instance"? [Lucy] Original subject is about to construct a tenant network that contain multiple subnets. If all tenant systems in the tenant use IP, do you construct on IP VPN for the tenant network, or configure multiple? Can tenant systems on the same subnet run a broadcast application under this construction? Configuring local /32 IP address on a tenant system means that there is no longer host address, just having network address. Is this what we want to do in the network virtualization in DC. Does this mean that in the nvo3, a subnet is no longer useful? I am not expert on addressing and like to hear people's opinion on this. > > > > In the model B) a set of VMs are configured to belong to the same > IP > > > subnet (which is still often the case how the VM are being > > configured). > > > Both models can be supported. In the case of B), the NVE implements > > > proxy ARP for all the addresses on the /24. With proxy ARP, there > is > > no > > > difference between B) and A) with respect to forwarding. > > [Lucy] In case A, you forward on IP address. In case B, do you also > > always forward on IP address? > > How do you set up a policy per a subnet? > > > > > It is just that the virtual subnet has no locality across a data- > > center. > > [Lucy] Do you mean that both case A and B only apply within a DC? > > Virtual subnet has no locality either intra- or inter-DC. [Lucy] Thanks for the explanation. WAN IPVPN [RFC4346] provides intra and inter IP subnet routing seamlessly because PE treats CE as a router and vice versa. Do you think that IPVPN-end-system fit all tenant IP networks or applications? Regards, Lucy > > Maria > > > _______________________________________________ > > nvo3 mailing list > > [email protected] > > https://www.ietf.org/mailman/listinfo/nvo3 _______________________________________________ nvo3 mailing list [email protected] https://www.ietf.org/mailman/listinfo/nvo3
