Most data center diagram sshow the servers (platforms hosting the TS if
I understand correctly) as dual-homed to the network. This is necessary
for robustness.
How does that interact with asserting that TS are always connected
through the VN through exactly one NVE?
Yours,
Joel
On 11/20/13 12:07 PM, Thomas Narten wrote:
Linda,
If most TSes are only attached to a single NVE and traffic to NVEs
are not aggregated flows, then the NVE-NVE control plane protocol
doesn’t provide much benefits.
I want to flag the first part of the sentence above because this
question has been raised before. It suggests that a TS might connect
to more than one NVE at a time.
From an architectural perpsective, I think we should say "no". Life is
much simpler if a TS connects to a VN through exactly one NVE. More
precisely, a TSI always connects to one NVE. If we allowed connections
to multple NVEs simultaneously, it would raise all sorts of questions
as to when to use one over the other, etc.
I don't think I'm actually saying anything new with this... I've
always assumed this, documents are written with this in mind, and it
hasn't come up (other than in passing) on the list.
A TS can still connect to multiple different VNs through different
network interfaces, and hence different TSIs, but I think we should
have a TSI always connect to exactly one NVE.
Any other opinions?
Thomas
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