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66 Appendix F. Additional Information for S/390 and zSeries Users

# route

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

192.168.70.0 * 255.255.255.0 U 0 0 0 eth1

9.12.20.0 * 255.255.255.0 U 0 0 0 eth0

169.254.0.0 * 255.255.0.0 U 0 0 0 eth1

default pdlrouter-if5.p 0.0.0.0 UG 0 0 0 eth0

Verify your changes by using the ping command to ping the gateway:

# ping -c 1 192.168.70.8

PING 192.168.70.8 (192.168.70.8) 56(84) bytes of data.

64 bytes from 192.168.70.8: icmp_seq=0 ttl=63 time=8.07 ms

If the default route information has changed, you must also update /etc/sysconfig/network ac-

cordingly.

F.6.2. Quick Reference for Adding Network Devices

There are several basic tasks for adding a network interface on zSeries systems.

• Load the device driver.

• Create the group device or, for IUCV, create the IUCV device.

• Conﬁgure the device.

• Set the device online (not applicable to IUCV).

• Deﬁne the alias (if needed).

• Create a conﬁguration script.

• Activate the device.

The following sections provide basic information for each task of each zSeries network device driver.

F.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

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 85 86

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Red Hat ENTERPRISE LINUX AS 2.1 - Guida di Installazione Pagina 74