Naming networkinterfaces using udev
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To find the information available for the different networkinterfaces (and all other devices) use "udevinfo". For 'eth0' execute the following command: | To find the information available for the different networkinterfaces (and all other devices) use "udevinfo". For 'eth0' execute the following command: | ||
udevinfo -a -p /sys/class/net/eth0 | udevinfo -a -p /sys/class/net/eth0 | ||
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| + | on newer systems use | ||
| + | udevadm info -a -p /sys/class/net/eth0 | ||
All devices available on the system are found in the '/sys' file system, and can be listed using "udevinfo". | All devices available on the system are found in the '/sys' file system, and can be listed using "udevinfo". | ||
Revision as of 16:59, 19 January 2012
Naming networkinterfaces using udev
Usually the robots are configured to use DHCP at networkinterface 'eth0' and have a static IP (10.0.1.2) at interface 'eth1'. In order to get the wireless PCMCIA netcard to use DHCP we want to rename it to 'eth0'. This can be achieved by using the udev system. Changes are done in the file
/etc/udev/rules.d/75-network-devices.rules
Add the following two lines:
SUBSYSTEMS=="pci", DRIVERS=="via-rhine", NAME="eth1" SUBSYSTEMS=="pci", DRIVERS=="yenta_cardbus", NAME="eth0"
Remove any conflicting lines.
Jetway Atom boards
The approach above will work on the VIA based motherboards used at the SMRs. The new Intel Atom based motherborads from Jetway uses a Realtek network controller. Therefore change the line
SUBSYSTEMS=="pci", DRIVERS=="via-rhine", NAME="eth1"
to
SUBSYSTEMS=="pci", DRIVERS=="r8168", NAME="eth1"
to achieve the same on the Jetway motherboards.
Further information
To find the information available for the different networkinterfaces (and all other devices) use "udevinfo". For 'eth0' execute the following command:
udevinfo -a -p /sys/class/net/eth0
on newer systems use
udevadm info -a -p /sys/class/net/eth0
All devices available on the system are found in the '/sys' file system, and can be listed using "udevinfo". All udev rules are found in
/etc/udev/rules.d
The files in this directory are parsed in lexical order.
