While we are talking about the gateway machine, it is an ideal time to take a further look at the intricacies of routing using Solaris.
Routes are added to the routing table either statically or dynamically. Static ones are added by the system administrator, using the route command, which we will do later. Dynamic ones rely on a process maintaining the routing table on our behalf.
The main protocols supported by Solaris are Router Information Protocol (RIP) and Router Discovery (RDISC).
Normally, when a multi-interface machine boots, RDISC and RIP will be started by the programs /usr/sbin/in.rdisc and /usr/sbin/in.routed, respectively. They discover all the available routes and advertise these around the network. At the ...