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 From:  "Holger Bauer" <Holger dot Bauer at citec dash ag dot de>
 To:  <m0n0wall at lists dot m0n0 dot ch>
 Subject:  Problem forcing speed and duplex mode (in 1.233 as well as in 1.3b11)
 Date:  Tue, 27 May 2008 16:38:19 +0200
Hello,

I have some problems on a special link where I have to force duplex
settings using hidden config.xml setting (autonegotiation is not working
and detecting the wrong duplex mode which leads to lots of collisions
and a pretty variable bandwidth which completely breaks trafficshaping).

I already forced duplex modes with older versions of m0n0 successfully
in the past but somehow it doesn't work anymore with the newer version
(though ifconfig shows that I have forced speed and duplex successfully:

sis0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	options=8<VLAN_MTU>
	inet 10.10.20.15 netmask 0xffffff00 broadcast 10.10.20.255
	ether 00:0d:b9:04:93:e8
	media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
...
sis2: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	options=8<VLAN_MTU>
	inet 10.10.15.20 netmask 0xffffff00 broadcast 10.10.15.255
	ether 00:0d:b9:04:93:ea
	media: Ethernet 100baseTX <full-duplex> (10baseT/UTP)
	status: active

Note that sis1 is still at autoselect and sis2 shows my forced duplex
settings but still negotiates to 10baseT/UTP. I just did this test with
an old 10baseT hub though the original problem exists with a device that
has 100baseTX/fullduplex set but negotiates to 100baseTX/half duplex.
Forcing fullduplex doesn't work.

I tried 1.233 and 1.3b11 but the result is exactly the same with both
versions.

Anybody have a clue what to do?

Thanks in advance
Holger