![]() On the router R2, we configured IP addresses 40.0.0.1/8, and 30.0.0.1/8 on interfaces FastEthernet 0/0, and Serial 0/0/0, respectively. The router R1, automatically adds three entries in the routing table that indicates that the networks 10.0.0.0/8, 20.0.0.0/8, and 30.0.0.0/8 are available on the interfaces Fa0/0, Fa0/1, and S0/0/0, respectively. On the router R1, we configured IP addresses 10.0.0.1/8, 20.0.0.1/8, and 30.0.0.1/8 on interfaces FastEthernet (Fa) 0/0, FastEthernet 0/1, and Serial (S) 0/0/0, respectively. If it detects any change in the state or IP configuration of any interface, it automatically updates the related routing table entry. If it finds IP configuration on any active interface, it abstracts the network address from the IP configuration and creates a routing table entry that associates the abstracted network address with the interface.Īfter starting, the router actively monitors the state and IP configuration of all interfaces. When we start a router, the router scans all of its active interfaces. A routing table entry consists of two pieces: the destination network and the local interface that is connected to that destination network. Alternatively, download the following pre-configured practice LAB and load it on the packet tracer.ĭownload practice lab with IP configurationĪ router stores routing information in a table, known as the routing table. If you don’t know how a default route works or how to configure a default route, please take a pause here and check previous parts of this tutorial.Ĭreate a packet tracer practice LAB as shown in the following image and configure routing in such a way that it not only allows communication between both networks (10.0.0.0/8 and 40.0.0.0/8) but also forwards all unknown packets to the log server for logging and monitoring purposes.Īssign IP configuration to all devices and routers’ interfaces, as shown in the above image. To download the latest version of the packet tracer and learn how to install it, check the following tutorial.įor this tutorial, I assume that you know what a default route is and how it is configured in Cisco routers. Packet tracer is a network simulator software. In the below section, we will understand how this is done practically through an example in the packet tracer. If an administrator wants to capture all unknown packets for logging and monitoring purposes, he can connect such a device or server to the other side of the default route that can process unknown packets. The router or device that is connected to the other side of the default route decides what to do with the packet. By default, if the destination network address of an incoming packet is unknown to the router, the router forwards that packet from the default route. ![]()
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December 2022
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