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How Routing Starts Up?


Solaris and SunOS each have a specific order which they use to start up routing: If an /etc/defaultrouter file exists, only static routing will be used, and a static default route will be created to the machine listed in the defaultrouter file. If there is no /etc/defaultrouter file, and the machine is a router, both in.routed and in.rdisc will be started, and they will advertise routing information. SunOS machines will only start up in.routed, as in.rdisc is not available under SunOS. If there is no /etc/defaultrouter file, and the machine is a host, in.rdisc is initially started. If any machines on the same network advertise via Routing Discovery, in.rdisc will be used as the dynamic routing program if there are no machines advertising via Routing Discovery, in.rdisc will quickly quit. SunOS skips this step. Finally, if there is no /etc/defaultrouter file, and either the machine is running SunOS, or in.rdisc has failed, then in.routed is started. It will listen for other in.routed programs advertising via RIP packets. This is the default manner in which most out-of-the-box Suns will operate.

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