>From my understanding the engineer that had worked on this on several occasions pulled the plug. But I believe it was only for 15-20 seconds. Unplugging for 10-15 minutes is one of the things I wanted to try the next time it occurs. Walt
>>> "Shuttlesworth, James" <[email protected]> 6/21/2012 1:30 PM >>> Just echoing that – and Not sure if it’s at all related, but we occasionally see that with our 3620 access points; they just disappear from the network – we would go & swap them, bring them back to the office and they would work again, move them back and they would still work again. We eventually started killing POE & disabling the interface to them for about 15 minutes (so they completely drained) and after that they would be fine;, but shorter reboots would not help. So we came to the conclusion that it was the long downtime during the walk back to the office, rather than the change of network location that was causing the ‘fix’. It’s an extremely rare event (maybe 5-10 times this year out of nearly 400 AP’s) but it is similar – I have not heard of it happening with clients, but we are heavy with laptops here, so there isn’t a lot of fixed stations out there, and most of them are regularly turned off overnight (which would ‘fix’ the issue as well). ------------------------------ James Shuttlesworth Network Technologies Manager Ursinus College Information Technology [email protected] From: Brian Anderson [mailto:[email protected]] Sent: Thursday, June 21, 2012 1:08 PM To: Enterasys Customer Mailing List Subject: RE: [enterasys] No input data from user On your hard shutdown, did you also unplug the power from the pc, and let it sit for a few moments to drain the power out and plug it back in? From: Walter Witkowski [mailto:[email protected]] Sent: Thursday, June 21, 2012 10:38 AM To: Enterasys Customer Mailing List Subject: [enterasys] No input data from user Hello all! Thought I would tap the great knowledge base here. This may not be Enterasys specific although the environment is C3's.. I've seen several times where a pc (Dell 970/980) will lose network connectivity after it has been working. This usually happens after a power down and up cycle. When the user starts for the day. The initial reported problem begins with no DHCP request from the pc. Further investigation of the C3 stack port shows no incrementing inbound counters on the user port. Port status shows ok at 1G. Mirroring the port shows no inbound packets. Outbound counters do increment. Hard coded ip address on the pc presents no packets either. Another pc plugged into that port responds correctly. Tried hard power on the pc to no avail and changed out the patch cable from pc to wall jack. Strangely if we move the pc to another network----several minutes away at the help desk --- it works. Returning the pc to the original port it works!!!! Any ideas where to look next or things to try would be greatly appreciated . Really wierd! thanks in advance Walt Witkowski Primary Network Specialist - Office of Information Technology - Delaware County Community College ellucianTM 610-359-5017(phone) / 610-359-4123 (fax) / 856-217-4430(cell) [email protected] [email protected] www.ellucian.com --To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected] --To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected] NOTICE: The Arkansas Department of Human Services has determined that this message may contain confidential or otherwise protected information. We have used transport encryption to help protect this message while in transit to you. Please take all reasonable measures to protect any protected or confidential data that might be in this message, including the limitation of re-disclosure to the minimum number of recipients necessary. Please report any inappropriate disclosure to https://dhs.arkansas.gov/reporting or as required by law. --To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected] --- To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected]
