Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION, Руководство по установке

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Quick Reference for Adding Network Devices
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• 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.
22.6.2.1. 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:
eth
n
for OSA-Express Fast Ethernet and Gigabit Ethernet tr
n
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:
# echo portno > ­/sys/bus/ccwgroup/drivers/lcs/device_bus_id/portno
For more information about configuration of the LCS driver, refer to the following:
http://www-128.ibm.com/developerworks/linux/linux390/october2005_documentation.html#3
(Linux
for IBM System z and S/390 Device Drivers, Features, and Commands)
• Set the device online:
# echo 1 > ­/sys/bus/ccwgroup/drivers/lcs/read_device_bus_id/online
• Define the alias.
Based on the type interface being added, add a line to
/etc/modprobe.conf
that is similar to one
of the following:
eth n alias lcs
tr n alias lcs