Summary: Removing tu0...

From: Lindström, Tony <tony.lindstrom_at_tekla.fi>
Date: Tue, 21 Mar 2000 10:22:47 +0200

Hello,

This summary is about one month late, but I had to be sure of the
result first.

The problem was:


> We have a AS 2100 with the standard netcard (tu0) and a 10/100 (tu1) one.
> We don't use tu0 to anything, but why can't it be deleted? I can get it
> down,
> but not deleted. But if I put it down, something still tries to do
something
> to it, because this leads to the "no buffer space available" and this also
> leads to a crash of the whole system. But if I leave it up, this also
> happens,
> but much later.


As you may know, the commands:
ifconfig tu0 down
ifconfig tu0 delete
do not remove the tu0. Why? Don't know but....
(the netsetup command does the same thing, so that
doesn't help either)

That was one suggestion, which I indeed had tried several times.

Another suggestion was to remove the tu0 card physically from
the system. Yeah, well, people who knows the 2100 also knows, that
the tu0 is integrated on the motherboard so this would be a tough case..;-)

Third suggestion was tho remove the tu0 from rc.config. Don't know if
this would had been enough, because I decided to rebuild the kernel
with tu0 removed.

I didn't want to reboot before it was necessary and this time,
it took about one month before this happened (I did force lat to use only
tu1 which made this possible...) and by now I had rebuilt a new kernel,
where tu0 was completely disabled. And now ifconfig -a says:

tu1: flags=c63<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST,SIMPLEX>
     inet 192.xx.xx.xx netmask ffffff00 broadcast 192.xx.xx.255 ipmtu 1500

sl0: flags=10<POINTOPOINT>

lo0: flags=100c89<UP,LOOPBACK,NOARP,MULTICAST,SIMPLEX,NOCHECKSUM>
     inet 127.0.0.1 netmask ff000000 ipmtu 4096

Which hopefully means, that this time the AS will not crash for the above
mentioned
reason anymore...


Thank you for your suggestions:

Per Boussard, Steffi Laurentius, Udo de Boer, Nikola Milutinovic, Dr Tom
Blinn
Philip Ordinario, Jim Fitzmaurice, Wayne Sweatt, John Losey, Dion Rivera and
Alex Gorbachev.


-- 
Tony Lindström * System Specialist * Tekla Oy
tel:+358 9 887 9441  gsm:+358 40 762 0768
http://www.iki.fi/tonyk/ mailto:tonyk_at_iki.fi
Received on Tue Mar 21 2000 - 08:24:07 NZST

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