nanog mailing list archives

Re: IPV6 in enterprise best practices/white papaers


From: Karl Auer <kauer () biplane com au>
Date: Wed, 30 Jan 2013 22:06:12 +1100

On Wed, 2013-01-30 at 10:33 +0000, Nick Hilliard wrote:
On 30/01/2013 10:24, Karl Auer wrote:
Hm. If you have 100 VMs per host and 48 hosts on a switch, methinks you
should probably invest in the finest switches money can buy, and they
will have no problem tracking that state.

What make+model switches would these be, did you say?

Oooh, you've got me there :-)

My point was just that the additional state did not, as described, seem
to me like such a massive amount more than that presently required. I
thus doubted that lack of state capacity in switches would be a real (as
distinct from a possible, likely or supposed) problem. If there *are*
actual problems, then obviously I stand corrected.

I don't mind being corrected, but I would be sad to see this aspect of
IPv6 go by the board. I suspect that even if it *is* an actual problem
now, it will turn out to be a transient one - switches will get more
capacity and will just deal with it. Even if low-end switches don't, I
expect that high-end switches will.

But if it turns out that even the high end of the market doesn't care
about traffic reduction but does want cheaper switches, then I guess
we'll see a lot of non-MLD-snooping switches.

Regards, K.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Karl Auer (kauer () biplane com au)
http://www.biplane.com.au/kauer
http://www.biplane.com.au/blog

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