+ Post New Thread
Results 1 to 6 of 6
Wireless Networks Thread, Network broadband upgrade - inconsistent speeds in Technical; This week the LA initiated an upgrade on the broadband which it is eventually hoped will give up speeds of ...
  1. #1
    speckytecky's Avatar
    Join Date
    May 2006
    Location
    UK
    Posts
    2,508
    Thank Post
    3,393
    Thanked 258 Times in 211 Posts
    Blog Entries
    3
    Rep Power
    110

    Network broadband upgrade - inconsistent speeds

    This week the LA initiated an upgrade on the broadband which it is eventually hoped will give up speeds of up to 30GB. However, straight after the upgrade the school noticed that the net was decidedly iffy and inconsistent - wireless in one area visible but too weak to function and speeds of 10GB sometimes dropping to a crawl at others.

    The network was working OK but a bit slow before the upgrade and initial thoughts post a day of the new connection are that it seems to drop off drastically - in some areas of the school when peak users are logged onto the network.

    Thought being that we have a device somewhere that has an IP conflict. It looks like we are going to have to crawl through the whole network to search it out or are there better ideas please?

  2. #2


    Join Date
    Feb 2007
    Location
    Northamptonshire
    Posts
    4,690
    Thank Post
    352
    Thanked 796 Times in 715 Posts
    Rep Power
    347
    GB? or Mb?

    I'd split this problem into an internal (ie, your network and wireless) and then an external one as the internal could affect the external etc.

  3. Thanks to kmount from:

    speckytecky (5th February 2010)

  4. #3
    speckytecky's Avatar
    Join Date
    May 2006
    Location
    UK
    Posts
    2,508
    Thank Post
    3,393
    Thanked 258 Times in 211 Posts
    Blog Entries
    3
    Rep Power
    110
    I'm thinking it might have something to do with IP allocations. The scope was recently extended by 50 addresses and looking around it's now apparent that some of the extra 50 had already been put into use by the chaps who set up the network - for managed ports and several Linksys WAP boxes plus the Admin server and workstation but these devices are not held as reservations nor exclusions.

    The strange thing is that the network seemed to be running pretty stable before the new broadband kit was installed.

  5. #4


    Join Date
    Feb 2007
    Location
    Northamptonshire
    Posts
    4,690
    Thank Post
    352
    Thanked 796 Times in 715 Posts
    Rep Power
    347
    Hm, that won't be helping.

    Crack out an ipscanner and check the whole subnet you have available for 'in use' IP's and put in reservations for them to stop clashes there.

    I'm not knocking your broadband idea as being the fault but does the network return to its normal glory if you unplug the router?

  6. #5
    speckytecky's Avatar
    Join Date
    May 2006
    Location
    UK
    Posts
    2,508
    Thank Post
    3,393
    Thanked 258 Times in 211 Posts
    Blog Entries
    3
    Rep Power
    110
    TVM - I see there are several Free ipscanners which would you recommend please.

    Quote Originally Posted by kmount View Post
    Hm, that won't be helping.

    Crack out an ipscanner and check the whole subnet you have available for 'in use' IP's and put in reservations for them to stop clashes there.

    I'm not knocking your broadband idea as being the fault but does the network return to its normal glory if you unplug the router?

  7. #6


    Join Date
    May 2009
    Location
    UK
    Posts
    2,105
    Thank Post
    256
    Thanked 450 Times in 251 Posts
    Rep Power
    141
    If you suspect there is clashing IP's between standard devices (such as PC/laptop) and some of your switches, make sure you run the ipscanner once with the devices on, and once with them off, as an ip scanner will sometimes only see one of the devices, whichever one is the prominent device.

    While your at it, see about setting reservations, and write up a list of attached devices, mac addresses, and ip addresses; this may help you in the future!

  8. Thanks to Rydra from:

    speckytecky (5th February 2010)

SHARE:
+ Post New Thread

Similar Threads

  1. upgrade your lgfl broadband
    By Face-Man in forum London Grid for Learning (LGfL)
    Replies: 0
    Last Post: 4th February 2009, 09:55 AM
  2. Using 3g broadband alongside existing network
    By dancingdruid in forum Wireless Networks
    Replies: 3
    Last Post: 19th November 2008, 09:32 AM
  3. Broadband over electrical network (BOEN)
    By beeswax in forum General Chat
    Replies: 18
    Last Post: 26th June 2008, 10:14 AM
  4. Replies: 14
    Last Post: 2nd November 2007, 08:45 PM
  5. *CRYING* Help with a BroadBand Router and our Network
    By ninjabeaver in forum Wireless Networks
    Replies: 25
    Last Post: 2nd December 2005, 10:50 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
  •