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    Subjectip/arp problems in switched environment (kernel 2.0.36)
    Hi,

    I have a problem with ethernet/token ring address resolution
    in a switched ethernet/token ring environment.
    I can´t communicate (via IP) from a linux-machine (kernel 2.0.36) on the

    ethernet to a machine wich is placed in token ring behind the switch(i.
    e. win
    nt or AIX). When the Linux-box is placed in the token ring all
    communication
    works fine.

    I did some tests:

    the ping (ping aix001) results in nothing (no response)
    the arp cache shows up the following:

    aix001.lrp.de (10.1.200.3) at <incomplete> on eth0

    the original MAC-Adress of the machine is 00:04:ac:fd:cc:58
    the switch translates it to 00:20:35:bf:33:1a

    So, I created a manual arp cache entry with the translated
    MAC-Address:

    arp -s aix001 00:20:35:bf:33:1a

    After this, all communication works fine.

    Then I did some further tests with IPX. Here all things
    are working fine.

    Any ideas on it? I posted this to the linux networking
    news-group some weeks ago, but there was no response.

    The switches are from Cabletron Systems (some SmartSwitch 9000
    and SmartSwitch 6000). I also did some tests with some older kernel
    versions and some development kernels.

    Thanks,
    - Volker -

    --
    ##############################
    sender: Volker Dormeyer
    eMail: Volker.Dormeyer@lrp.de
    volker@csa.de



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