Red Hat Bugzilla – Bug 64408
eepro100 wont run full duplex
Last modified: 2013-07-02 22:06:02 EDT
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User-Agent: Mozilla/4.72 [en] (X11; U; AIX 4.3)
Description of problem:
Our local network environment requires that we force ethernet adapters to run in
full duplex mode. This was not a problem with RH 6.2 - all that was necessary
was to put an appropriate options line in /etc/modules.conf. This doesn't work
on either RH 7.1 or RH 7.2. Also tried adding an append="ether=0,0,0x50" line
to the stanza for the Linux kernel in /etc/lilo.conf. Still no help. Win2K
running on the same box has no problem
running the same adapter in full duplex.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Set appropriate parameters in modules.conf or lilo.conf
3. ftp a 4.5 MB file from another system
Actual Results: ftp throughput of 6.5 to 7.0K per second, indicating duplex
conflict between ethernet adapter and network switch that it is connected to.
Expected Results: ftp throughput in the vicinity of 1000 K per second.
Pass 'options' module parameter to force full duplex.
Or use mii-tool. Or with a recent eepro100, use 'ethtool' as a third way to
force full duplex.