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Hello IX-Denver members,

Around 2am MDT this morning IX-Denver lost power to both of its power feeds
at the same time at the 910 15th st site.  This outage, therefore took down
both our switching and server infrastructure for a brief period of time.
It is unknown at this time how both A and B feeds were down at the same
time, we are working with the site to get a root cause.  We will update
when we have an answer.

The outage persisted for clients of our route server A until early this
morning.  The reason this VM did not recover automatically was eventually
found to be due to an old setting going all the way back to when the VM for
route server A was installed.  Our hypervisor had a configuration to permit
the VM to be reachable via VNC, and the subnet this command was referencing
no longer existed on this hypervisor after some hypervisor networking
architectural changes earlier this year. So the VM wouldn't boot and also
did not output a whole lot of information about what 'device'  failure was
preventing the start of the VM.  This was a miss on our part and we
apologize, we haven't had to boot this VM in well over a year.  This is
should be a one off issue since not only is this configuration removed now,
but we also have been using a different hypervisor schema for all new VMs
for some time, and this should not be possible again.

The more lengthy route server A outage does highlight a need for at best
more bi-lateral peering between our members, and 2nd best, more members
connected to all three route servers. We have not done a great job of
socializing the new redundant route servers, but we have been soaking them
for stability for the last couple of months and it has gone well.  Route
servers B and C were also both online immediately after boot as expected.
So I encourage all to look into bringing up sessions to the other route
servers, there is information on our technical page (
http://ix-denver.org/?q=technical ) about the new features we support on B
and C, if you have the minimum requirement of an IRRDB as-set then there is
already a session built and ready to go for your network.

Please feel free to contact me if you have any questions.
Thank you,
-Mark

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