Silicon Graphics POWER CHALLENGE User Manual page 51

Challenge L systems enable the Ethernet only on the master (first) IO4 by
default. To enable an additional Ethernet port on an optional installed IO4
board you can use the following steps:
1. Edit the file /var/sysgen/system/irix.sm.
2. Add a vector line that looks similar to the following:
VECTOR: bustype=EPC module=epcserial unit=1 slot=4
This vector line configures the Ethernet interface on the IO4 in slot 4 as
et1. The first two options (bustype and module) are mandatory and tell
lboot that you're configuring an Ethernet interface. The "unit" option
specifies the Ethernet unit number. The unit number must be greater
than 0. The "slot" option specifies the cardcage slot of the IO4 where the
Ethernet interface is being configured as et1.
3. Write and quit the file, then rebuild the kernel (using the /etc/autoconfig
command).
4. To make the new interface available, reboot the machine with the newly
installed kernel information.
SCSI Limitations
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