Announcement

Collapse
No announcement yet.

Strangest Exchange Network Issue I have Seen..

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Strangest Exchange Network Issue I have Seen..

    I am having a hard time tracking this down. A little background:

    -We are a single site environment with a Windows 2003 domain. We have 1 Exchange Server running 2003 all around.

    Everything on the network is running fine and dandy, email is flowing beautifully and folks are connected to mail like normal. Our network hasnt seen any significant changes in quite some time and all that good stuff. We have over 100 people physically here and connected.

    Here's the weird part. Very randomly and very infrequently someone will be working and they all of a sudden get the message that they have been disconnected from the Microsoft Exchange Server. (you know, like when you unplug your network cable). I ask them to reboot and then everything is fine for 10 minutes and then the same thing again. No one else on the entire network will be experiencing this issue during this.

    I have updated drivers on the machine, given a new cable, plugged them into a different port on a different switch, but ultimately the ONLY thing that cures this is replacing the network card. The 1st one wasn't too big of a deal, but after 2 months I have had to do this for 3-4 people. I just cant seem to find any commonality among these machines either.

    Any clues?

  • #2
    Re: Strangest Exchange Network Issue I have Seen..

    Highly unlikely to be related to Exchange.
    Most likely a compatability issue between the NIC and the switch. Hard coding the speed and duplex might help.

    Simon.
    --
    Simon Butler
    Exchange MVP

    Blog: http://blog.sembee.co.uk/
    More Exchange Content: http://exchange.sembee.info/
    Exchange Resources List: http://exbpa.com/
    In the UK? Hire me: http://www.sembee.co.uk/

    Sembee is a registered trademark, used here with permission.

    Comment


    • #3
      Re: Strangest Exchange Network Issue I have Seen..

      Originally posted by Sembee View Post
      Highly unlikely to be related to Exchange.
      Most likely a compatability issue between the NIC and the switch. Hard coding the speed and duplex might help.

      Simon.

      I agree with you Simon. I have tried hard coding speed and duplex. The issue definitely is with the NIC, but it only seems to lose Exchange. You can surf the net and network while experiencing the issue. The second a new NIC is installed the issue goes away for good. The user can be connected via wireless into the VPN and use Outlook fine too.

      Silly huh.

      Comment


      • #4
        Re: Strangest Exchange Network Issue I have Seen..

        There is no reason why it should be just Exchange traffic affected, other than there is a lot of Exchange traffic going on. It is just TCP packets.

        Have you changed the network card in the Exchange server?
        If it is built in, then ensure that it is on the latest driver and firmware (if applicable).

        Simon.
        --
        Simon Butler
        Exchange MVP

        Blog: http://blog.sembee.co.uk/
        More Exchange Content: http://exchange.sembee.info/
        Exchange Resources List: http://exbpa.com/
        In the UK? Hire me: http://www.sembee.co.uk/

        Sembee is a registered trademark, used here with permission.

        Comment

        Working...
        X