4-14
Add-on Card User's Guide
Bit Posi-
tion
Decimal
Value
Hex Value
Speed
(Mbps)
Duplex
7
128
80
N/A
-
6
64
40
N/A
-
5
32
20
1000
Full
4
16
10
N/A
-
3
8
8
100
Full
2
4
4
100
Half
1
2
2
10
Full
0
1
1
10
Half
Some examples of using AutoNeg:
modprobe e1000 AutoNeg=0x01 (Restricts autonegotiation to 10 Half)
modprobe e1000 AutoNeg=1 (Same as above)
modprobe e1000 AutoNeg=0x02 (Restricts autonegotiation to 10 Full)
modprobe e1000 AutoNeg=0x03 (Restricts autonegotiation to 10 Half or 10
Full)
modprobe e1000 AutoNeg=0x04 (Restricts autonegotiation to 100 Half)
modprobe e1000 AutoNeg=0x05 (Restricts autonegotiation to 10 Half or 100
Half)
modprobe e1000 AutoNeg=0x020 (Restricts autonegotiation to 1000 Full)
modprobe e1000 AutoNeg=32 (Same as above)
Note that when this parameter is used, Speed and Duplex must not be specifi ed.
If the link partner is forced to a specifi c speed and duplex, then this parameter should
not be used. Instead, use the Speed and Duplex parameters previously mentioned
to force the adapter to the same speed and duplex.
4-5 Additional Confi gurations
Confi guring the Driver on Different Distributions
Confi guring a network driver to load properly when the system is started is distribu-
tion dependent. Typically, the confi guration process involves adding an alias line
to /etc/modules.conf or /etc/modprobe.conf as well as editing other system startup
scripts and/or confi guration fi les. Many popular Linux distributions ship with tools to
make these changes for you. To learn the proper way to confi gure a network device
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