Tim Frost wrote:
On Sun, 2010-06-13 at 14:21 +1200, Perry Lorier wrote:
After the discussion a few weeks back about DNS
performance, I asked
one of my colleagues, Brendon Jones to add DNS performance to the
gTLD/Root servers to our Active Measurement Platform (AMP) which is
already monitoring the .nz nameservers. These have now had a while to
collect some data and show a fairly interesting (and IMHO pretty
visualisation of New Zealands DNS performance)
I note that TelstraClear and Telecom aren't listed in these statistics
as sources. Given that these are major ISPs (and they don't seem to
peer at the NZIX exchanges :), have you any way of gathering statistics
for their connectivity to either the .nz nameservers or the root/gTLD
If you look closely at the traceroutes from many of the Universities (eg
Waikato) you'll see that they use Telstra Clear as their upstream,
although this is obviously imperfect as they also generally have KAREN
connectivity. Unfortunately I don't think we have any visibility into
What about other ISPS which don't have
either the NZIX exchanges or to one of the universities (and who aren't
peering with them)?
Many of the "nsX" amp nodes are hosted at various ISPs (if you hover
over them they give you a description that might be more useful), for
example the AMP node called ns4a is hosted by Orcon.
We're always interested in hosting more AMP boxes around the Internet
(and particularly in New Zealand) to broaden what problems can be
diagnosed by the AMP pages. For a variety of reasons, we provide the
hardware and maintain the software build on the machines. Unfortunately
we're funded by various grants, none of which at this moment cover
buying new AMP machines. (But if people are willing to help with the
costs, I'm sure we can arrange something).
We generally try and put AMP boxes with cooperating sponsors, usually at
points in the network where high performance use is expected, so AMP
currently deliberately doesn't measure what end user DSL customers are
likely to see.
If anyone at Telecom or TelstraClear wants to host an AMP box to help
diagnose routing issues between ISPs then get in touch and we'll see
what we can organise.