Hi Larry, I wonder if point C or D is feasible in implementation. In my understanding, the TSI must be a virtual port which could be associated with the special VN, and transmit/receive packets from tenant system (the virtual port terminology is used in many switch chip). If we use one IP address, we could not treat it as a virtual port. One simple example, if packet with broadcast IP address received, will this packet be send to IP_a and IP_b on the same vNIC?
I don't think we need to define such kind of detail for TSI. The TSI definition is implementation related. I could define the TSI with a VLAN (piont B in your figure), or define TSI with a priority queue within one vNIC. BTW, I like the name TSI, and remove NIC/vNIC/pNIC. pNIC is closely related with data transfer between network and host stack, and it is usually a controller without MAC&PHY. vNIC is a driver function or virtual function(defined by SR-IOV). A TSI could also be a vNIC teaming interface by teaming driver. So "interface" is a appropriate name to define a Tx/Rx channel between tenant system and VN. Regards Lizhong > ---------- Forwarded message ---------- > From: "Larry Kreeger (kreeger)" <[email protected]> > To: Qin Wu <[email protected]>, Anoop Ghanwani <[email protected]>, > "Black, David" <[email protected]> > Cc: "[email protected]" <[email protected]>, "Reith, Lothar" < > [email protected]> > Date: Wed, 17 Apr 2013 16:55:50 +0000 > Subject: Re: [nvo3] NVO3 Terminology changes > Hi Qin, > > A VM is one possible implementation of a Tenant System. I have not seen > anyone suggesting that a Tenant System get more granular than that. > > Regarding what defines a TSI, someone could choose any branch in the > tree below to define as the TSI. I was assuming that the TSI would be at > point A below in the tree. However, point B would correspond the the VAP. > Pat had mentioned having the TSI at point D. I think if we were to define > the TSI to be either point C or point D, then it would depend on the > service being given (L2 or L3). I would prefer it to be at point A or B. > > VNIC-+-VN-+-MAC-+-IP > ^ | | +-IP ... > | | | > | | +-MAC-+-IP > | | +-IP ... > | | > | +-VN-+-MAC-+-IP > | ^ | +-IP ... > | | | > | | +-MAC-+-IP > | | ^ +-IP ... > | | | ^ > | | | | > A B C D > > - Larry > >
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