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Planning for Network Deployment in Oracle® Solaris 11.4

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Updated: March 2019

Planning for Routers on Your Network

In TCP/IP, two types of entities exist on a network: hosts and routers. All networks must have hosts, while not all networks require routers. The physical topology of the network determines if you need routers.

In most networks, commercial routers are typically used to manage network traffic. However, if necessary, you can also configure an Oracle Solaris system to function as a router. See Chapter 2, Configuring a System as a Router in Configuring an Oracle Solaris 11.4 System as a Router or a Load Balancer.

The following figure shows a network topology with three networks that are connected by two routers.

Figure 4  A Network Topology With Three Interconnected Networks

image:Figure shows a sample of three networks that are connected by                                     two routers.

Router R1 connects networks and Router R2 connects networks and

    If Host A on network sends a message to Host B on network, the following events occur:

  1. Host A examines its routing tables for the path to The local network address range does not cover this address, but there is a previously learned default route through router R1 that covers the address. Therefore, Host A sends the packet to Router R1.

  2. Router R1 examines its routing tables. No local network's address range covers the destination address, but there is a known route to network through Router R2 that covers the address, Router R1 sends the packet to Router R2.

  3. Router R2 is connected directly to network The routing table lookup reveals that is on the attached network. Router R2 sends the packet directly to Host B.