TITLE    : Routing with AIX, setting up gated with OSPF routing protocol.
OS LEVEL : AIX 4.2.1 upwards
DATE     : 07/06/99
VERSION  : 1.0

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In the example below the system is to be setup as a router using OSPF. The
system is connected to 2 networks :-

127.22.0.0 via ethernet using adapter en0
194.35.52.0 via ppp serial link using adapter pp0

The ip address of the system are :-

en0 = 172.22.20.70
pp0 = 194.35.53.1

The default gateway for the system to talk to other networks is :-

172.22.2.1

The routing software needs to communicate with other routers on the network
(172.20.2.1) and tell it that the gateway for the 194.35.53 network is 
172.22.20.70


1, Check that the TCP/IP Server software is installed :-

   lslpp -l bos.net.tcp.server

   If not installed, then install using smit install_latest


2, Turn on ip forwarding :-

   no -o ipforwarding=1


3, Edit the /etc/gated.conf file :-

-------------------------start-of-gated.conf-file----------------------------

interfaces {
        interface en0 pp0 passive ;
} ;

ospf yes {
        traceoptions "/tmp/gated.ospf.log" replace size 2m files 2 all;
        backbone {
                authtype none ;
                interface en0 {
                        enabled ;
                        priority 2 ;
                } ;
                interface pp0 {
                        enabled ;
                        priority 4 ;
                } ;
        } ;
};

static {
        default gateway 172.22.2.1 preference 60 retain ;
        194.35.53.0 gateway 172.22.20.70 retain ;
} ;


export proto ospfase
{
        proto static
        {
                194.35.53.0 mask 255.255.255.0 metric 1;
        };
};

-------------------------end-of-gated.conf-file------------------------------

4, Start the gated routing software software :-

   startsrc -s gated