+ Post New Thread
Results 1 to 5 of 5
Wired Networks Thread, Dropped Packets in Technical; Okay, a week or so back I started a BTRD thread because a teacher was moaning about what looked like ...
  1. #1

    tmcd35's Avatar
    Join Date
    Jul 2005
    Location
    Norfolk
    Posts
    6,069
    Thank Post
    902
    Thanked 1,013 Times in 825 Posts
    Blog Entries
    9
    Rep Power
    350

    Dropped Packets

    Okay, a week or so back I started a BTRD thread because a teacher was moaning about what looked like a Windows Profile issue: http://www.edugeek.net/forums/behind...ml#post1118049

    I've been able to look at the problem a little closer, and it appears to be randomly effecting machines just in that one room. If they log off, log back on - the problem is resolved.

    So, I'm thinking bandwidth/dropped packet issue on the local switch?

    Logged on to the switch and reset all port counters so I can make sense of whats going on. Hour and half later...


    Only the uplink port (#49, 1GBps fibre to core switch) is showing any dropped packets. So far it's dropped 79 out of 1.351 billion. No other ports showing any problems so far, no collisions and no other errors.

    Where do I go from here?

  2. #2
    DMcCoy's Avatar
    Join Date
    Oct 2005
    Location
    Isle of Wight
    Posts
    3,505
    Thank Post
    10
    Thanked 508 Times in 445 Posts
    Rep Power
    116
    Do you have slow profile detection disabled? That's a very low number of dropped packets anyway, although you might still get a profile timeout if everyone logs in a once.

  3. Thanks to DMcCoy from:

    tmcd35 (5th February 2014)

  4. #3

    tmcd35's Avatar
    Join Date
    Jul 2005
    Location
    Norfolk
    Posts
    6,069
    Thank Post
    902
    Thanked 1,013 Times in 825 Posts
    Blog Entries
    9
    Rep Power
    350
    Quote Originally Posted by DMcCoy View Post
    Do you have slow profile detection disabled?
    No that's currently not configured. Have noticed another setting "Control slow network connection timeout for user profiles" that might be worth altering?

    That's a very low number of dropped packets anyway, although you might still get a profile timeout if everyone logs in a once.
    Yeah, that's what got me. All evidence suggests slow network/dropped packets - but the switch so far isn't agreeing.

  5. #4
    DMcCoy's Avatar
    Join Date
    Oct 2005
    Location
    Isle of Wight
    Posts
    3,505
    Thank Post
    10
    Thanked 508 Times in 445 Posts
    Rep Power
    116
    Quote Originally Posted by tmcd35 View Post
    No that's currently not configured. Have noticed another setting "Control slow network connection timeout for user profiles" that might be worth altering?



    Yeah, that's what got me. All evidence suggests slow network/dropped packets - but the switch so far isn't agreeing.
    Don't forget that smb has little in the way of priority for queued requests, there could be a delay from the server end when responding that causes a time out (requests not getting a timely response is the cause of things like delayed write failed with cheaper NAS etc).

    It's worth playing with the timeouts and setting slow link detection to 0 for wired clients to disable it.

  6. #5

    tmcd35's Avatar
    Join Date
    Jul 2005
    Location
    Norfolk
    Posts
    6,069
    Thank Post
    902
    Thanked 1,013 Times in 825 Posts
    Blog Entries
    9
    Rep Power
    350
    Yeah, if it was server side I'd expect the same problems to appear in other rooms. It's just that one location.

    I'll enable the "diable detection of slow network connections" and see if it has any effect.

    Thanks



SHARE:
+ Post New Thread

Similar Threads

  1. Wyse X50M (Linux) Dropping Packets
    By FN-GM in forum Thin Client and Virtual Machines
    Replies: 2
    Last Post: 25th June 2014, 03:51 PM
  2. CISCO firewall dropping packets - internet offline across whole site
    By BassTech in forum Internet Related/Filtering/Firewall
    Replies: 8
    Last Post: 4th February 2014, 02:41 PM
  3. pc dropping packets when pinging websites
    By jaanvar in forum Internet Related/Filtering/Firewall
    Replies: 6
    Last Post: 25th November 2013, 05:03 PM
  4. PCs dropping off the network
    By SpuffMonkey in forum Windows
    Replies: 11
    Last Post: 2nd March 2006, 11:10 AM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •