Sometimes folks have redundant NIC cards in the server and they want each individual VM to have a redundant connection via each card.
It may not be the most common use case, but it exists. Anoop On Wed, Apr 17, 2013 at 7:15 AM, Truman Boyes <[email protected]> wrote: > Hilarious. > > Btw, is this multiple vNIC scenario based on real world experience? I am > scared of more than 1 vNIC in a large scale deployment due to complexities > in routing at the host level and further upstream. > > There may be corner cases the require a different set of reachable vectors > for a vm but there are many ways to provide that without more vNICs. Not > completely opposed to the idea, but when I see scenarios discussing VMs > with 5 vNICs I think the IETF may be off course here. > > There is a lot of rope, it's our choice to make a raft or a noose. > > > Truman > > > On Wednesday, April 17, 2013, John E Drake wrote: > >> This thread reminds me of the lyrics to a Nicki Minaj song.**** >> >> ** ** >> >> Irrespectively Yours,**** >> >> ** ** >> >> John**** >> >> ** ** >> >> *From:* [email protected] [mailto:[email protected]] *On Behalf >> Of *Qin Wu >> *Sent:* Tuesday, April 16, 2013 7:15 PM >> *To:* Larry Kreeger (kreeger); Anoop Ghanwani; Black, David >> *Cc:* [email protected]; Reith, Lothar >> *Subject:* [nvo3] 答复: 答复: 答复: 答复: NVO3 Terminology changes**** >> >> ** ** >> >> Hi, Larry:**** >> >> Is relation between vNIC and TSI one to one or one to more?**** >> >> Let me interpret what you said below, **** >> >> (a)If a VM has only one vNIC, then vNIC that belongs to the VM will be >> dealt with as one tenant system. Each vNIC corresponds to one TSI.**** >> >> (b) If a VM has 5 vNICs and each vNIC is assigned with only one IP >> address, each vNIC that belongs to the same VM will be treated as one >> Tenant System. Each vNIC corresponds to one TSI. Then one VM have 5 Tenant >> system. Each Tenant System has one TSI.**** >> >> (c) If a VM has 5 vNICs and each vNIC is assigned with 2 IP addresses, >> each vNIC that belongs to the same VM will be treated as one Tenant system, >> each vNIC with each IP address corresponds to one TSI. Then one VM has 5 >> tenant system. Each Tenant system has 2 TSIs.**** >> >> That is to say if the relation between vNIC and TSi is one to more, then >> we can easy to guarantee that each TSI is associated with only one NVE.** >> ** >> >> ** ** >> >> However if one VM is simply regarded as one tenant system and each vNIC >> with multiple IP addresses belonging to one VM is treated as only one TSI >> in (b)(c), take (c) as an example. when one vNIC is assigned with multiple >> IP addresses and connect to multiple VNs through multiple NVE, then one TSI >> has multiple IP addresses and will be associated with multiple NVEs.**** >> >> Here is two figure2, figure 1 shows one to one relation between vNIC and >> TSI, figure 2 shows one to more relation between vNIC and TSI.**** >> >>
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