October 2021

Date: Wednesday, October 20, 2021 (07:00-09:00)

Who is affected:
Users of CS Department Network Services

What is happening:
The CS Department\’s network uplink to OIT\’s network (and onward to the
internet) will undergo configuration changes to finalize the deployment of
redundant upstream peering to OIT\’s new routers.

This work is expected to cause some very short outages of our uplink, but
most people or systems should not notice them. As technological changes
always present the possibility of unexpected results, though, this message
is notice in case of the unexpected.

Why is it happening:
This change will finalize the router peering with OIT\’s new routers in the
Lewis Library and New South buildings, providing more redundancy than the
original design which uplinked the department only through Lewis Library
(and 87 Prospect prior to that).

This last step will move the actual routing of CS Department traffic
through the new routers.

We will post updates to the status page: http://www.csstaff.org
as necessary.

If this work will cause you undue hardship, or if you have questions or
concerns, please contact csstaff@cs.princeton.edu to discuss. Your patience
is appreciated.

Sincerely,
CS Staff
_______________________________________________
downtime mailing list
downtime@lists.cs.princeton.edu
https://lists.cs.princeton.edu/mailman/listinfo/downtime

Date: Wednesday, October 13, 2021 (07:00-08:30)

Who is affected:
Users of CS Department Network Services

What is happening:
The CS Department\’s network uplink to OIT\’s network (and onward to the
internet) will undergo configuration changes in preparation for deployment
of OIT\’s Next Generation Network.

No noticeable outage is anticipated, but as technological changes always
present the possibility of unexpected results, this message is notice in
case of the unexpected.

Why is it happening:
This change will enable router peering with OIT\’s new routers in the Lewis
Library and New South buildings, providing more redundancy than the
original design which uplinked the department only through Lewis Library
(and 87 Prospect prior to that).

This is the second step in a multi-step process of reconfiguring this
uplink.

We will post updates to the status page: http://www.csstaff.org
as necessary.

If this work will cause you undue hardship, or if you have questions or
concerns, please contact csstaff@cs.princeton.edu to discuss. Your patience
is appreciated.

Sincerely,
CS Staff
_______________________________________________
downtime mailing list
downtime@lists.cs.princeton.edu
https://lists.cs.princeton.edu/mailman/listinfo/downtime

Date: Tuesday, October 12, 2021 (07:00-07:30)

Who is affected:
Users of CS Department web sites and other services including:

https://adm.cs.princeton.edu/
https://csguide.cs.princeton.edu/
https://fam.cs.princeton.edu/
https://iw.cs.princeton.edu/portal/
https://keymanager.cs.princeton.edu/
https://pac.cs.princeton.edu/portal/
https://ris.cs.princeton.edu/
https://tigerfile.cs.princeton.edu/
https://www.cs.princeton.edu/

What is happening:
During this window, our main internal database server will be rebooted.
This will result in a brief outage for the above-listed sites, but should
otherwise not be noticeable.

Other department services, including email, networking, and research group
and other hosted web sites, will continue uninterrupted.

Why is it happening:
The database server is suffering from memory errors, for which a BIOS
update fix is required.

We will post updates to the status page: http://www.csstaff.org
as necessary.

If this downtime will cause you undue hardship, please contact
csstaff@cs.princeton.edu immediately, so we can discuss options to reduce
any negative impact. Your patience is appreciated.

Sincerely,
CS Staff
_______________________________________________
downtime mailing list
downtime@lists.cs.princeton.edu
https://lists.cs.princeton.edu/mailman/listinfo/downtime