Route Table

Discussion in 'Windows Networking' started by =?Utf-8?B?U2NvdHQ=?=, Nov 26, 2004.

  1. Hello,

    When using "route print" at a Win2000 and Win2003 command prompt, I see many
    nonpersistant routes in my route table (in addition to the 7 or so standard
    routes everyone has). These routes are removed after reboot, but come back
    after the server has been up for some time. In fact, I can tracert to an IP,
    and that same IP will immediately get added to my route table.

    Is this behavior normal? If so, is there any documentation explaining why
    it does this?

    =?Utf-8?B?U2NvdHQ=?=, Nov 26, 2004
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  2. =?Utf-8?B?U2NvdHQ=?=

    Bill Grant Guest

    A client machine usually doesn't have a lot of routes. It sends "foreign"
    data to its default gateway (or default router). This router then forwards
    it on to its destination.

    If the router finds there is a better path to the "target" machine, it
    sends a ICMP redirect message to the sender, advising it of the better path
    and the address of the "first hop" router to use. The sending machine will
    then add this route to its routing table.

    So the extra routes are probably just optimised paths to particular
    Bill Grant, Nov 27, 2004
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