Hi Linda, See below for my responses. - Larry
From: Linda Dunbar <[email protected]<mailto:[email protected]>> Date: Tuesday, September 10, 2013 1:43 PM To: Larry Kreeger <[email protected]<mailto:[email protected]>> Cc: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [nvo3] Questions to draft-ietf-nvo3-nve-nva-cp-req-00 Larry, Glad to learn that you agree that the NVE to NVA control plane requirement is exactly the same regardless of whether the NVE is embedded in Hypervisor, in End Device, or on a separate physical switch. Then, I would suggestion re-wording the second paragraph of Section 3 to the following to avoid other people from getting confused: There are two aspects of control plane for NVE: one is the protocol between NVE and NVA for NVE to be populated with the mapping tables to tunnel traffic across the underlying networks; another one is the protocol between Tenant Systems and NVE for NVE to be promptly updated of TS’s status. The latter control plane aspect is not discussed in this document, but is covered in [I-D.kreeger-nvo3-hypervisor-nve-cp-req].The requirements for the NVE to NVA control plane are exactly the same regardless of whether the NVE is embedded within and End Device (e.g. Hypervisor), or in a physical switch. LK> There is no protocol from a Tenant System to the NVE. Tenant Systems should not have to be modified to participate in any NVO3 protocols. It is the End Devices (e.g. Hypervisor, Network Service Appliance) that does this. Otherwise, I will put in some text similar to above to clarify what this draft is covering and what is covered in draft-kreeger-nvo3-hypervisor-nve-cp-req. I suggest to either remove the Figure 1, or change Figure 1 to show that NVE can be either embedded or separate: [cid:[email protected]] --------[cid:[email protected]] LK> A figure similar to the one above is in draft-kreeger-nvo3-hypervisor-nve-cp-req, I can put it in here too. Figure 2 shows the Net Service Instances being attached to NVE. How is it different from VMs being attached to NVE from control plane perspective? LK> It is no different, this is just showing two plausible examples of embedded NVEs. Similar to the hypervisor figure, there is also a figure in draft-kreeger-nvo3-hypervisor-nve-cp-req that shows a Network Service Appliance using an external NVE. Do you think I should put that figure in here as well? Linda LK> The requirements for the NVE to NVA control plane are exactly the same regardless of whether the NVE is embedded within and End Device (e.g. Hypervisor), or in a physical switch. The second paragraph of section 3 is trying to say that the Hypervisor to NVE protocol is covered in draft-kreeger-nvo3-hypervisor-nve-cp-req, not that that embedded NVEs is out of scope for the NVE to NVA control plane. Please let me know how I can reword it to make it more clear.
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