Re: Server intermittently becomes unreachable from outside

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Matthew,

    I may be able to help you with this, since I have some experience
  with wireless networking under Linux. 

Matthew Campbell <mattcampbell@pobox.com> writes:

>   [Summary: local Linux machine can reach all 100baseT connected
>  devices, but can not always reach ISP through wireless bridge.] 
> 
>    When this happens, I log into the server and attempt to PING the
>  machine that it uses as its gateway (which is the router at the ISP,
>  reached via the bridge), and I get the message "Destination Host
>  Unreachable" from PING.

  This (above) is caused by that (below):

>    In the server's ARP table, the entry for the ISP's router is
>  incomplete.  After setting the entry in the ARP table, I get no
>  response when I ping the router. 

    The error message "Destination Host Unreachable" is being returned
  precisely because your server's ARP requests are not being answered,
  leading to the incomplete entry in the ARP table.

    When this problem occurs, do the other machines that are not behind
  the Linux server have problems getting out?

-tex
-- 
------------------
Jon Allen Boone
tex@delamancha.org
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