Cisco Lab Essay

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Stand-Alone Lab 16: Loopback Interfaces Objective Learn to create and configure Loopback interfaces. A Loopback address is used for local testing of the interface and protocol stack. Routers will not forward packets that contain the Loopback address within the source or destination address fields. Because Loopback interfaces are logical, not physical, a Loopback interface can never fail. Configure the appropriate settings on Router1. Lab 16 Topology The lab topology displays information about the network devices in the lab. e0 R o u te r2 e0 R o u te r1 s0 s1 s0 R o u te r5 e0 e1 e0 R o u te r3 s0 R o u te r4 e0 fa 0 /1 S w itch 2 e 0 /1 e 0 /2 S w itch1 P C1 Command Summary Command configure terminal enable end hostname host-name Description enters global configuration mode from privileged EXEC mode enters privileged EXEC mode ends and exits configuration mode sets the device name 1 Boson NetSim for CCNA Lab Manual Command interface type number ip address ip-address subnet-mask ping ip-address show ip interface brief show running-config Description changes from global configuration mode to interface configuration mode; the no form removes an interface assigns an IP address to an interface sends an Internet Control Message Protocol (ICMP) echo request to the specified address displays a brief summary of interface status and configuration displays the active configuration file The IP addresses and subnet masks used in this lab are shown in the table below: IP Addresses Device Router1 Interface Loopback 0 IP Address Subnet Mask Lab Tasks Task 1: Configure a Loopback Interface This task involves creating a Loopback interface. Perform the following steps on Router1: 1. Configure Router1 with a host name of Router1. Router>enable Router#configure terminal Router(config)#hostname Router1

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