Red Hat ENTERPRISE LINUX 4 - INSTALLATION GUIDE FOR IBM S-390 AND IBM ESERVER ZSERIES Installation Manual page 100

Appendix F. Additional Information for S/390 and zSeries Users
TYPE=CTC
• Activate the device.
Based on the type interface being added, issue an
# ifup ctc<n>
6.2.4. Working With the IUCV Device Driver
The Inter-User Communication Vehicle (IUCV) is a VM communication facility that enables a
program running in one VM guest to communicate with another VM guest, with a control
program, or even with itself. The Linux for zSeries and S/390 IUCV device driver is a network
device driver that uses IUCV to connect Linux guests running on different VM user IDs, or to
connect a Linux guest to another VM guest such as a TCP/IP service machine.
The IUCV driver assigns a base interface name like the following:
iucv<n>
The value is an integer that uniquely identifies the device.
<n>
type, 1 for the second, and so on.
• Load the device driver:
# modprobe netiucv
• Create the IUCV device:
# echo <peer_id> > /sys/bus/iucv/drivers/netiucv/connection
The value of
<peer_id>
device driver interprets the ID as uppercase. This is usually TCPIP.
This creates a sysfs structure like the following:
cat /sys/bus/iucv/drivers/netiucv/netiucv<n>
90
is the guest ID of the VM guest you want to connect to. The IUCV
command:
ifup
is 0 for the first device of that
<n>