Chapter 11 - Configuring and Testing Your Network CCNA Exploration 4.0 Overview • • • • • Define the role of the Internetwork Operating System (IOS) Use Cisco CLI commands to perform basic router and switch configuration and verification Given a network addressing scheme, select, apply, and verify appropriate addressing parameters to a host Use common utilities to verify network connectivity between hosts Use common utilities to establish a relative performance baseline for the network H c vi n m ng Bách khoa - Website: www.bkacad.com Role of Internetwork Operating System (IOS) • Identify several classes of devices that have IOS embedded H c vi n m ng Bách khoa - Website: www.bkacad.com Role of Internetwork Operating System (IOS) • • • • Basic routing and switching functions Reliable and secure access to networked resources Network scalability Using Cisco Command Line Interface (CLI) to configuration H c vi n m ng Bách khoa - Website: www.bkacad.com H c vi n m ng Bách khoa - Website: www.bkacad.com Access Methods • Access Methods – Console – Telnet or SSH – AUX port H c vi n m ng Bách khoa - Website: www.bkacad.com Access Methods • Use the CLI to access various IOS configuration modes on a device H c vi n m ng Bách khoa - Website: www.bkacad.com Console • Console – Low speed serial connection to directly connect a computer or terminal to the console port on the router or switch – Provides out-of-band access to a router • Examples of console use are: – The initial configuration of the network device – Disaster recovery procedures and troubleshooting where remote access is not possible – Password recovery procedures H c vi n m ng Bách khoa - Website: www.bkacad.com Telnet and SSH • • Telnet – Require active networking services on the device – Run on layer in OSI model Secure Shell (SSH) protocol – Like telnet but more secure access – Stronger password – Uses encryption when transporting session data – Use can use ssh client on PC name: Putty http://www.chiark.greenend.org.uk/~sgtatham/putty/dow nload.html H c vi n m ng Bách khoa - Website: www.bkacad.com AUX • • • Another way to establish a CLI session remotely is via a telephone dialup connection using a modem connected to the router's AUX port Can used locally, like console port Console port is also preferred over the auxiliary port for troubleshooting because it displays router startup, debugging, and error messages by default H c vi n m ng Bách khoa - Website: www.bkacad.com Select, Apply, and Verify Appropriate Addressing Parameters to a Host • Trace the steps for using ipconfig/ifconfig to verify host parameter assignments and for using ping to test assignments H c vi n m ng Bách khoa - Website: www.bkacad.com Select, Apply, and Verify Appropriate Addressing Parameters to a Host H c vi n m ng Bách khoa - Website: www.bkacad.com Use Common Utilities to Verify Network Connectivity Between Hosts • Use the ping command in the CLI to determine if the IP protocol is operational on a local host H c vi n m ng Bách khoa - Website: www.bkacad.com Use Common Utilities to Verify Network Connectivity Between Hosts • Use the ping command to determine if the IP protocol is properly bound to an NIC H c vi n m ng Bách khoa - Website: www.bkacad.com Use Common Utilities to Verify Network Connectivity Between Hosts • Use the ping command to determine if a host can actively communicate across the local network H c vi n m ng Bách khoa - Website: www.bkacad.com Use Common Utilities to Verify Network Connectivity Between Hosts • Use the ping command to verify that the local host can communicate across the internetwork to a given remote host H c vi n m ng Bách khoa - Website: www.bkacad.com Use Common Utilities to Verify Network Connectivity Between Hosts • Identify several conditions that might cause the test to fail H c vi n m ng Bách khoa - Website: www.bkacad.com Use Common Utilities to Establish a Relative Performance Baseline for the Network • Use the output of the ping command, saved into logs, and repeated over time, to establish relative network performance H c vi n m ng Bách khoa - Website: www.bkacad.com Use Common Utilities to Establish a Relative Performance Baseline for the Network • Use the output of the traceroute command, saved into logs, and repeated over time, to establish relative network performance H c vi n m ng Bách khoa - Website: www.bkacad.com Use Common Utilities to Establish a Relative Performance Baseline for the Network • Trace the steps for verifying the physical addresses of the hosts H c vi n m ng Bách khoa - Website: www.bkacad.com How to know about PC connect to SW H c vi n m ng Bách khoa - Website: www.bkacad.com Labs H c vi n m ng Bách khoa - Website: www.bkacad.com Summary H c vi n m ng Bách khoa - Website: www.bkacad.com Commands (EXTRA) • • • • Set banner (recall) – Router(config)#banner motd # message # Logging Synchronize – Router(config)#line console – Router(config-line)#logging synchronous Removing auto domain name resolve – Router(config)# no ip domain lookup Write command – Router#write - The same as copy run start H c vi n m ng Bách khoa - Website: www.bkacad.com H c vi n m ng Bách khoa - Website: www.bkacad.com ... the command or keyword Ctrl-R - Redisplays a line Ctrl-Z - Exits configuration mode and returns to the EXEC Down Arrow - Allows user to scroll forward through former commands Up Arrow - Allows... commands Ctrl-Shift-6 - Allows the user to interrupt an IOS process such as ping or traceroute Ctrl-C - Aborts the current command and exits the configuration mode H c vi n m ng Bách khoa - Website:... Internetwork Operating System (IOS) • Identify the basic command structure for IOS commands H c vi n m ng Bách khoa - Website: www.bkacad.com IOS command Conventions H c vi n m ng Bách khoa - Website: