Red Hat Enterprise Linux Installation Guide 5.2 - linux.meuhobby.com

Chapter 22. Additional Information for IBM System z Users
There are several basic tasks for adding a network interface on IBM System z.
• Load the device driver.
• Create the group device.
• Configure the device.
• Set the device online.
• Define the alias (if needed).
• Create a configuration script.
• Activate the device.
The following sections provide basic information for each task of each IBM System z network
device driver.
6.2.1. Working With the LCS Device Driver
The LAN channel station (LCS) device driver supports OSA-2 Ethernet/Token Ring,
OSA-Express Fast Ethernet in non-QDIO mode, and OSA-Express High Speed Token Ring in
non-QDIO mode. For z990, the LCS driver also supports Gigabit Ethernet in non-QDIO mode
(including 1000Base-T).
Based on the type of interface being added, the LCS driver assigns one of two base interface
names: ethn for OSA-Express Fast Ethernet and Gigabit Ethernet trn for Token Ring, where n is
an integer that uniquely identifies the device. n is 0 for the first device of that type, 1 for the
second, and so on.
• Load the device driver:
# modprobe lcs
• Create the group device:
# echo read_device_bus_id,write_device_bus_id >
/sys/bus/ccwgroup/drivers/lcs/group
Due to the length of this command, it has been broken into two lines.
• 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:
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