Every night around 3 AM from the eventlog (Outlook complains it can't get to the exchange server) I lose all TCP/IP connectivity from my desktop. Other systems on the network still function, as well as the IP phone system plugged into the same hub, but not me.
And ipconfig /release
and /renew
gets me working again, so I'm able to handle DHCP broadcasts, but why would my IP get knocked out?
I'm an XP SP 3 32-bit system. Latest patches - EXCEPT that the latest SQLServer 2005 SP2 security patch is failing installing (for what its worth).
The only thing in the logs at the time related to networks is:
Event Type: Warning
Event Source: Tcpip
Event Category: None
Event ID: 4226
Date: 11/6/2009
Time: 9:53:43 AM
User: N/A
Computer: HEIMDALL
Description:
TCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 00 00 00 00 01 00 54 00 ......T.
0008: 00 00 00 00 82 10 00 80 ......
0010: 01 00 00 00 00 00 00 00 ........
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........
but that happens even when I'm working.
Ideas on how to diagnose this? Is there an "enhanced" TCP/IP diagnosis mode on the stack?