[G4] Ethernet/router problems
Joseph B. Gurman
gurman at gsfc.nasa.gov
Fri Jan 23 05:10:01 PST 2004
Bill in Lakewood WA wrote:
>I recently got, and am trying to get fully functional, a Sawtooth AGP
>G4. So far most has gone well but I'm at an impasse now in trying to
>get an Asanté FriendlyNET 4 port router up and running.
>
>Apparently the problem is the G4's connection with the router as what
>ever port I put the cable connection from my machine into, it does not
>lightup/is not recognized by the router. Profiler shows the built-in
>ethernet link as "down" and the router as "not available". I switched
>ethernet cables around to test them and the results were the same. I
>also have switched ethernet ports with the other computer on the system
>and the other computer shows up well no matter where it is put, but mine
>doesn't show at all.
>
>Bottom line, my computer ethernet that works well when plugged into the
>modem doesn't work when plugged into the router. There might be other
>signs of problems also but I won't know until this problem is solved -
>the signs being that when using the modem only, the modem normally shows
>it's running at the 100M speed but when the router is connected to it,
>only the modem's 10M speed light is lit.
>
>In all my reading so far, nothing like this has been addressed. Any help
>would be appreciated.
Well, there are several things you don't say.
I believe the FriendlyNET router to which you;re
referring is an FR1004 (no wireless) or FR1004AL
(adds wireless). If it's different, I don't know
if my guesses are applicable.
You also don't say what "the other computer
on the system" (by which I assume you mean
another machine on your local area network) is.
Is it another Mac? A PC? (It's OK, folks on the
list will be understanding, many of us use or are
forced to use them, too, and your proximity to
Redmond can be considered a mitigating factor
when we get to the sentencing phase....) The
other machine is relevant, because its TCP/IP
settings are obviously of interest.
Likewise, you don't say if your cable modem
requires a fixed IP address. If so, and your G4's
TCP/IP settings are still set to that IP address,
while the router is serving DHCP, you're out of
luck. You've probably checked all these things,
but we can't tell from your post.
Finally, you don't say what OS you're
running, so it's difficult to suggest some
In any case, some guesses/suggestions:
1. if it's an FR1004, is the firmware up to date?
(probably only affects a security issue, but you
never know)
If you do update the firmware, make certain the
cable modem is not connected to it when you
perform the update.
2. my dim recollection is that there was an issue
with some vendors' hubs/switches (and the Asanté
routers are routers plus hubs) use of the
spanning tree algorithm that affected their
ability to autonegotiate (full or half duplex) a
connections with first generation Apple 10/100
interfaces --- but I thought that was a Blue &
White G3 problem, not Sawtooth. In any case, the
problem was soluble for older switches on a
port-by-port basis, but the FR1004 shouldn't have
that problem --- but I don't know what issues
that firmware update on Asanté's support site
addresses. If this is the problem, it's on your
G4's side: the router is expecting full-duplex,
but your Ethernet port may be defaulting to
half-duplex if autonegotiation fails. Under OS X
10.2, you can force the interface to be
full-duplex with some Terminal (shell) commands;
see:
http://www.macosxhints.com/article.php?story=20020902082941913 .
I _believe_ the same shell commands will work in 10.3, but YMMV.
3. the FR1004 and FR1004AL allow hardware MAC
address control; I doubt it's been set out of the
box, but if you've had "the other system on it"
with MAC address control, and your G4's MAC
address hasn't been entered into the router's
access control list through the router's Web
interface, you're SOL
4. Asanté's home routers (and most everybody
else's now) support MAC address cloning. If your
cable company only provides service to a known
MAC address (presumably the one of the machine
connected during installation), and your router
is configured to mimic that address (otherwise,
"the other machine" wouldn't be able to see the
Internet), there may be some conflict with your
machine, whose MAC address you've cloned ---
though I doubt it, as that's the whole point of
the feature.
Finally, for good advice rather than idle
speculation, Asanté's moderated support forums
are really helpful:
http://www.asante.com/forums/
(Scroll down to "Internet Access Routers" and
"FriendlyNET FR1000 Series" is the first forum.)
Good luck,
Joe Gurman
--
"I love deadlines. I love the whooshing sound they make as they go by."
- Douglas Adams, 1952 - 2001
Joseph B. Gurman, NASA Goddard Space Flight Center, Solar Physics
Branch, Greenbelt MD 20771 USA
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