Thông Báo - Võ Tấn Dũng (votandung) Click ThucHanhCCNA1_buoi1

L Lab - Co onfigurin ng a Switch Man nageme ent Addrress T Topology A Addressing g Table Device D Interface IP Address A Subnet Mas sk Defau ult Gateway S1 VLAN 192.16 68.1.2 255.255.255.0 N/A PC C-A NIC 192.16 68.1.10 255.255.255.0 N/A O Objectives Part 1: Co onfigure a Basic Network k Device  Cable e the network as shown in the topology  Config gure basic sw witch settings including hos stname, mana agement address, and Telnet access  Config gure an IP ad ddress on the PC Part 2: Ve erify and Tes st Network Connectivity C  Displa ay device nfiguration  Test end-to-end e co onnectivity witth ping  Test remote r manag gement capability with Telnet  Save the switch running configu uration file B Backgroun nd / Scenarrio Cisco switches have a special interfface, known as a a switch vi rtual interface e (SVI) The S SVI can be co onfigured with an IP P address, com mmonly referrred to as the managementt address tha at is used for rremote accesss to the switch to display d or nfigure setting gs In this lab b, you will build a simple ne etwork using Ethernet E LAN N cabling and access a Cissco switch using the console and a remote ac ccess method ds You will co onfigure basicc switch settin ngs and IP ad ddressing, and d demonstra ate the use of a managem ment IP addres ss for remote switch mana agement The topology nsists of one switch and one ho ost using only Ethernet and d console portts Note: The e switches used are Cisco Catalyst 2960s with Cisco o IOS Release e 15.0(2) (lan nbasek9 imag ge) Other switches and a Cisco IOS S versions ca an be used Depending D on the model an nd Cisco IOS version, the available command ds and output produced might vary from m what is show wn in the labss Note: Make sure that the switch has s been erased d and has no startup configuration If yo ou are unsure e, contact your instru uctor R Required Resources R  Switch (Cisco 29 960 with Cisco o IOS Release 15.0(2) lanb basek9 image e or compara able) © 2013 Cisco and d/or its affiliates All rights reserve ed This docume ent is Cisco Publiic Page of Lab - Configuring a Switch Management Address  PC (Windows 7, Vista, or XP with terminal emulation program, such as Tera Term)  Console cables to configure the Cisco IOS devices via the console ports  Ethernet cables as shown in the topology Part 1: Configure a Basic Network Device In Part 1, you will set up the network and configure basic settings, such as hostnames, interface IP addresses, and passwords Step 1: Cable the network a Cable the network as shown in the topology b Establish a console connection to the switch from PC-A Step 2: Configure basic switch settings In this step, you will configure basic switch settings, such as hostname and configuring an IP address for the SVI Assigning an IP address on the switch is only the first step As the network administrator, you must specify how the switch will be managed Telnet and Secure Shell (SSH) are two of the most common management methods; however, Telnet is a very insecure protocol All information flowing between the two devices is sent in plain text Passwords and other sensitive information can be easily looked at if captured by a packet sniffer a Assuming the switch had no configuration file stored in nonvolatile random-access memory (NVRAM), you will be at the user EXEC mode prompt on the switch with a prompt of Switch> Enter privileged EXEC mode Switch> enable Switch# b Verify a clean configuration file with the show running-config privileged EXEC command If a configuration file was previously saved, it will have to be removed Depending on the switch model and IOS version, your configuration may look slightly different However, there should be no configured passwords or IP address set If your switch does not have a default configuration, ask your instructor for help c Enter global configuration mode and assign the switch hostname Switch# configure terminal Switch(config)# hostname S1 S1(config)# d Configure the switch password access S1(config)# enable secret class S1(config)# e Prevent unwanted Domain Name System (DNS) lookups S1(config)# no ip domain-lookup S1(config)# f Configure a login message-of-the-day (MOTD) banner S1(config)# banner motd # Enter Text message End with the character ‘#’ Unauthorized access is strictly prohibited # © 2013 Cisco and/or its affiliates All rights reserved This document is Cisco Public Page of Lab - Configuring a Switch Management Address g Verify your access setting by moving between modes S1(config)# exit S1# S1# exit Unauthorized access is strictly prohibited S1> What shortcut keys are used to go directly from global configuration mode to privileged EXEC mode? h Return to privileged EXEC mode from user EXEC mode S1> enable Password: class S1# Note: Password will not show up on screen when entering i Enter global configuration mode to set the SVI IP address to allow remote switch management S1# config t S1#(config)# interface vlan S1(config-if)# ip address 192.168.1.2 255.255.255.0 S1(config-if)# no shut S1(config-if)# exit S1(config)# j Restrict console port access The default configuration is to allow all console connections with no password needed S1(config)# line S1(config-line)# S1(config-line)# S1(config-line)# S1(config)# k password cisco login exit Configure the virtual terminal (VTY) line for the switch to allow Telnet access If you not configure a VTY password, you will not be able to Telnet to the switch S1(config)# line vty S1(config-line)# password cisco S1(config-line)# login S1(config-line)# end S1# *Mar 00:06:11.590: %SYS-5-CONFIG_I: Configured from console by console © 2013 Cisco and/or its affiliates All rights reserved This document is Cisco Public Page of Lab - Configuring a Switch Management Address Step 3: Configure an IP address on PC-A a Assign the IP address and subnet mask to the PC, as shown in the Addressing Table on page The procedure for assigning an IP address on a PC running Windows is described below: 1) Click the Windows Start icon > Control Panel 2) Click View By: > Category 3) Choose View network status and tasks > Change adapter settings 4) Right-click Local Area Network Connection and select Properties 5) Choose Internet Protocol Version (TCP/IPv4), click Properties > OK 6) Click the Use the following IP address radio button and enter the IP address and subnet mask Part 2: Verify and Test Network Connectivity You will now verify and document the switch configuration, test end-to-end connectivity between PC-A and S1, and test the remote management capability of the switch Step 1: Display the S1 device configuration a Return to your console connection using Tera Term on PC-A to display and verify your switch configuration by issuing the show run command A sample configuration is shown below The settings you configured are highlighted in yellow The other configuration settings are IOS defaults S1# show run Building configuration Current configuration : 1508 bytes ! ! Last configuration change at 00:06:11 UTC Mon Mar 1993 ! version 15.0 no service pad service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname S1 ! boot-start-marker boot-end-marker ! enable secret 06YFDUHH61wAE/kLkDq9BGho1QM5EnRtoyr8cHAUg.2 ! no aaa new-model system mtu routing 1500 ! ! no ip domain-lookup ! spanning-tree mode pvst © 2013 Cisco and/or its affiliates All rights reserved This document is Cisco Public Page of Lab - Configuring a Switch Management Address spanning-tree extend system-id ! vlan internal allocation policy ascending ! ! interface FastEthernet0/1 ! interface FastEthernet0/2 interface FastEthernet0/24 ! interface GigabitEthernet0/1 ! interface GigabitEthernet0/2 ! interface Vlan1 ip address 192.168.1.2 255.255.255.0 ! ip http server ip http secure-server ! banner motd ^C Unauthorized access is strictly prohibited ^C ! line password cisco login line vty password cisco login line vty 15 login ! end b Verify the status of your SVI management interface Your VLAN interface should be up/up and have an IP address assigned Notice that switch port F0/6 is also up because PC-A is connected to it Because all switch ports are initially in VLAN 1, by default, you can communicate with the switch using the IP address you configured for VLAN S1# show ip interface brief Interface Vlan1 FastEthernet0/1 FastEthernet0/2 FastEthernet0/3 FastEthernet0/4 FastEthernet0/5 FastEthernet0/6 IP-Address 192.168.1.2 unassigned unassigned unassigned unassigned unassigned unassigned OK? YES YES YES YES YES YES YES Method manual unset unset unset unset unset unset © 2013 Cisco and/or its affiliates All rights reserved This document is Cisco Public Status up down down down down down up Protocol up down down down down down up Page of L Lab - Configu uring a Switc ch Managem ment Address s FastE Ethernet0/7 FastE Ethernet0/8 FastE Ethernet0/9 FastE Ethernet0/10 FastE Ethernet0/11 FastE Ethernet0/12 FastE Ethernet0/13 FastE Ethernet0/14 FastE Ethernet0/15 FastE Ethernet0/16 FastE Ethernet0/17 FastE Ethernet0/18 FastE Ethernet0/19 FastE Ethernet0/20 FastE Ethernet0/21 FastE Ethernet0/22 FastE Ethernet0/23 FastE Ethernet0/24 Gigab bitEthernet0 0/1 Gigab bitEthernet0 0/2 una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned una assigned YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES unse et et unse et unse et unse et unse et unse et unse unse et et unse et unse et unse et unse et unse et unse et unse et unse et unse et unse et unse et unse down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down down S Step 2: Tes st end-to-en nd connectiv vity Open a co ommand prom mpt window (c cmd.exe) on PC-A by clickking the Wind dows Start iccon and enter cmd into the Searc ch for progra ams and files s field Verify the t IP addresss of PC-A byy using the ipc config /all co ommand This comm mand displays the PC hostname and th he IPv4 addre ess informatio on Ping PC-A A’s own addre ess and the manag gement addre ess of S1 a Ping your y own PC A address firrst C:\Us sers\NetAc cad> ping 192.168.1 10 Your output should d be similar to o the following g screen: © 2013 Cisco and d/or its affiliates All rights reserve ed This docume ent is Cisco Publiic Page of L Lab - Configu uring a Switc ch Managem ment Address s b Ping the t SVI mana agement addrress of S1 C:\Us sers\NetAc cad> ping 192.168.1 Your output should d be similar to o the following g screen If pi ng results are e not successsful, troublesh hoot the basic device config gurations You u should chec ck both the ph hysical cablin ng and IP add dressing, if ne ecessary S Step 3: Tes st and verify y remote ma anagement of S1 You will now use Telne et to remotely y access the switch s S1 usin ng the SVI ma anagement address In this lab, PC-A and d S1 reside sid de by side In n a production n network, the e switch could d be in a wirin ng closet on th he top floor while e your manag gement PC is located on th he ground floo or Telnet is n not a secure p protocol However, you will use it in this lab to test remote access a All info ormation sen t by Telnet, in ncluding passswords and command ds, is sent acrross the sessiion in plain te ext In subseq uent labs, yo u will use Seccure Shell (SS SH) to remotely access a netwo ork devices Note: Win ndows does s not natively support Telne et The admin nistrator mustt enable this p protocol To in nstall the Telnet clie ent, open a co ommand prom mpt window and a type pkgm mgr /iu:“T TelnetClien nt” C:\Us sers\NetAc cad> pkgmgr r /iu:”Tel lnetClient” ” a With the t command d prompt wind dow still open on PC-A, isssue a Telnet ccommand to cconnect to S1 via the SVI management m address a The password is cisco C:\Us sers\NetAc cad> telnet t 192.168.1.2 Your output should d be similar to o the following g screen: © 2013 Cisco and d/or its affiliates All rights reserve ed This docume ent is Cisco Publiic Page of L Lab - Configu uring a Switc ch Managem ment Address s b After entering the cisco c passwo ord, you will be b at the userr EXEC mode e prompt Type enable at th he promp pt Enter the class c passwo ord to enter privileged EXE EC mode and issue a show w run comma and S Step 4: Sav ve the configuration file a From your Telnet session, s issue e the copy ru un start comm mand at the p prompt c run start s S1# copy Desti ination fi ilename [st tartup-con nfig]? [Ent ter] Build ding confi iguration S1# d to the Wind he Telnet ses ssion by typing g quit You will w be returned dows comm mand prompt b Exit th R Reflection Why mustt you use a co onsole conne ection to initiallly configure tthe switch? W Why not conne ect to the swittch via Telnet or SSH? © 2013 Cisco and d/or its affiliates All rights reserve ed This docume ent is Cisco Publiic Page of ... password-encryption ! hostname S1 ! boot-start-marker boot-end-marker ! enable secret 06YFDUHH61wAE/kLkDq9BGho1QM5EnRtoyr8cHAUg.2 ! no aaa new-model system mtu routing 1500 ! ! no ip domain-lookup... Telnet to the switch S1(config)# line vty S1(config-line)# password cisco S1(config-line)# login S1(config-line)# end S1# *Mar 00:06:11.590: %SYS-5-CONFIG_I: Configured from console by console ©... is described below: 1) Click the Windows Start icon > Control Panel 2) Click View By: > Category 3) Choose View network status and tasks > Change adapter settings 4) Right -click Local Area Network