IRIS

In an effort to thwart continued ICMP attacks through our firewall, we have temporarily blocked ICMP from off campus networks to EECS.

This post will be updated when we return to our normal configuration.

We are currently seeing a high number of DOS (Denial Of Service) attacks coming from off campus and these are impeding the performance of our firewall. As such, there is intermittent connectivity from EECS to campus and the Internet. We are investigating to remedy the problem.

[Read more…] about Degraded network performance due to DOS attacks

Beginning last evening and continuing off and on this morning, we have experienced some loss of connectivity to our border router through the EECS firewall. We are seeing very high CPU utilization on the firewall and, as a result, some packet loss to and from the border. I have opened a case with the vendor and we are actively pursuing the issue.

Please bear with us.

Due to continued staffing and scheduling constraints, the EECS Helpdesk in 313 Soda Hall will be operating on a reduced schedule and will be open 9:00a–1:00p, M–F from now on, unless otherwise noted.

This does not affect the Helpdesk in 395 Cory Hall, which will continue to be open during normal business hours.

We apologize for any confusion this may cause our customers in Soda Hall. We think that a reduced Helpdesk presence is better than none at all and will be working to increase our personel in order to be able to adequately staff both locations.

The main UPS in Soda 290 computer room failed this morning. It is now on bypass mode, which means our critical servers are now on city powers only. The staff is working on identifying the cause and working on a solution, including get vendors to do onsite emergency repairs. However, there is no estimate when this will be fixed.

Since our servers are now without the protection of UPS, we want to let you know that we are subject to power outages. If that does happen, there could be considerable downtimes. We will update the status over the IRIS website and helpdesk phone.

Thank you for your understanding and cooperation.

Cory Hall 2nd floor including wireless services will be down during
this time. However, the service outage may not last all that long.

Also during this time, The link to BWRC will be down. This means that
they will not have Internet access at that time, which includes wireless.

I apologize for any inconvenience this will cause.

Bruce

There will be a network downtime on Thurday morning Jan. 26 between 8:00AM and 9:00AM. We will be upgrading network firmware for the BWRC switch.

This will affect users who use a wired connection in BWRC. Since the BWRC wireless network feeds into this switched infrastructure, there will also be an outage to the wireless network in BWRC.

I regret any inconvenience this may cause. Please make your plans accordingly.

The EECS Helpdesk in 313 Soda Hall will be operating on a reduced set of hours this week (01/23/2006–01/27/2006). During this period, the Soda desk will be open from 9:00am–1:00p, Monday–Friday.

The EECS Helpdesk in 395 Cory Hall will be open, as usual, 9:00a–5:00p, Monday–Friday.

We appreciate your patience as we continue to work out our staffing schedule.

Oracle has just released their January “Critical Patch Update.” IRIS staff will be applying this update to our Oracle database beginning at 6pm on Sunday, Jan 22. We estimate this process will take three to four hours, but could take up to six. During this time, applications which rely on the database will be unavailable. This includes the Network database query and request forms, and the Account request and query forms.

We regret any inconvenience this may cause.

Please send questions or comments to help@eecs.
[Read more…] about IRIS Web Site Downtime, Jan 22, 6pm-midnight

On Friday, January 20 between 07:00-0:800, there will be a couple of brief outages to the Cory Hall wireless network. This will affect coverage on floors 1-3 only. All other wireless services will be unaffected. I regret any inconvenience this may cause.