On Mon, Apr 12, 2010 at 4:02 PM, Jay Dale <[email protected]> wrote:
> Wifi is 10.0.1.0/24, Sonicwall is 10.0.1.1.  DHCP range on local is between
> .100 and .200, same for wifi.  The IP for the server is .60 that keeps
> rejecting ...

  Okay, given what you've said so far, I don't think changing the IP
address of the SonicWall on the wired network is likely to help
anyway.  If the SonicWall is mistakenly doing proxy ARP, or otherwise
configured to claim an additional incorrect address, it would keep
doing so.  I don't know why they suggest that.

  (Unless the SonicWall support folks are just engaged in some
"shotgun debugging": "The making of relatively undirected changes to
software in the hope that a bug will be perturbed out of existence.
This almost never works, and usually introduces more bugs."  (Jargon
File))

  If you can, I'd suggest taking the server that keeps rejecting, and
unplugging it from the LAN.  Then use a different computer (still
plugged into the LAN) to try ping'ing 192.168.0.60 and see if anything
answers.  If it does, you can start tracing there.  :-)

> ... in the Sonicwall ARP cache it is listed with the correct MAC address.

  ARP caches are generally overwritten as soon as a new answer comes
in.  Since the problem is intermittent, it could be that when the
failure mode occurs, the ARP cache in the Sonicwall would show
something different, but by the time you can check it, that bogus
answer has been replaced.

> And we only have 5 guys in this office, and I've walked around and asked -
> they're all developers and are fairly knowledgeable about what I ask them
> (for the most part - they are developers you know...:))

  Hmmm.  Well, they might not realize that combination
print-server/coffee-maker they got at Staples is also a DHCP server.
Or, they could just be flat-out lying.  But I guess we'll take their
word for it for now.  :)

-- Ben

~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~

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