IRIX: system: IRIX: Setting network manually
(last edit: 2003-01-05)
                   
Introduction
After you've installed your SGI you probaley would like to have a 
network connection wouldn't you?
There is a graphical tool to set this stuff but hey why use a point 
and click thingie when you can do it on the command line?

Setting an ipnumber
It's kind of a strange procedure but IRIX determines its ip 
adress by looking op it's hostname in the /etc/hosts file.

To set the ipnumer of your machine you must set the hostname 
and put an enty in the /etc/hosts file. 
Your hostname is set in the /etc/sys_id file.
It just needs your hostname, like 'irix.yourdomain.com'. 
Now put a line like this in /etc/hosts:

192.168.1.2     irix.yourdomain.com

When you boot your system it will have the ip nummer 192.168.1.2

The file /etc/config/netif.options defines which interface get's which hostname :

...

: if1name=
: if1addr=$HOSTNAME
: if2name=
: if2addr=gate-$HOSTNAME
....

So putting the hostname 'gate-irix.yourdomain.com' will 
put an ip-address on the second interface.

Setting a DNS server
This like all NIX's: configure a /etc/resolv.conf like this:

search yourdomain.com
nameserver 192.168.1.1

Setting default route
Edit the file /etc/config/static-route.options, it should speak 
for itself (read the comments). It should 
look like this:

$ROUTE $QUIET add 192.168.1.1 192.168.1.1

Setting netmask
This is done in the /etc/config/ifconfig-?.options file where 
the question mark should be the interface NUMBER for which these 
options apply. So for the primary interface you would edit the
ifconfig-1.options file and enter something like this:

netmask 255.255.255.192

Setting Duplex Mode
You can't do this the easy way, you have to make a new 
kernel or set stuff in you boot rom.
 
I've followed this howto and set the network interfaces 
of my origin200 to full duplex with the 
following line in /var/sysgen/master.d/if_ef:

{ -1, PHY_DP83840, -1, 0, 0xffff, F100 },

These are the supported modes:

#define F100    0x2100      /* 100mbps full duplex mode */
#define H100    0x2000      /* 100mbps half duplex mode */
#define F10     0x0100      /* 10mbps full duplex mode */
#define H10     0x0000      /* 10mbps half duplex mode */


Remove the line above and below this line 

(#ifdef nodef and #endif).

Then make a new kernel with 'autoconfig -f' and reboot. 

Remember this will affect ALL network interfaces.