RHEL 6 Installation Guide - 25.3.2. Adding an LCS Device

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The LAN channel station (LCS) device driver supports 1000Base-T Ethernet on the OSA-Express2 and OSA-Express 3 features.

Based on the type of interface being added, the LCS driver assigns one base interface name:

n is 0 for the first device of that type, 1 for the second, and so on.

Create the group device:

# echo read_device_bus_id,write_device_bus_id > /sys/bus/ccwgroup/drivers/lcs/group

Configure the device. OSA cards can provide up to 16 ports for a single CHPID. By default, the LCS group device uses port 0. To use a different port, issue a command similar to the following:
```
# echo portno > /sys/bus/ccwgroup/drivers/lcs/device_bus_id/portno
```
Replace portno with the port number you want to use. For more information about configuration of the LCS driver, refer to the chapter on LCS in Linux on System z Device Drivers, Features, and Commands on Red Hat Enterprise Linux 6.

Set the device online:

# echo 1 > /sys/bus/ccwgroup/drivers/lcs/read_device_bus_id/online

To find out what network device name has been assigned, enter the command:

# ls -l /sys/bus/ccwgroup/drivers/lcs/read_device_bus_ID/net/
drwxr-xr-x 4 root root 0 2010-04-22 16:54 eth1