Learning by Doing: CISCO Certified Network ... - SCN Research

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4. Let’s turn off debugging. Use “undebug all” or “undebug ppp.” 5. Now let’s set up PPP with PAP authentication. Just remember with our encapsulations on serial lines what we do on one end we must do on the other end too. If you just use “ppp authentication pap” you will not be able to have a ppp connection because no username/password authentication will be able to take place. terminus(config)#int s0/0 terminus(config-if)#enc ppp terminus(config-if)#ppp authentication pap terminus(config-if)#ppp pap sent-username prophet password legodoom terminus(config-if)#exit terminus(config)#username prophet password legodoom Before we change the other end of the line let’s look at a “failed” PPP negotiation process. Here we will see s0/1 refusing the connection because we have not set up authentication on it yet (notice how we never make it past the LCP negotiation phase): terminus#debug ppp negotiation PPP protocol negotiation debugging is on terminus# 01:18:42: Se0/0 LCP: I CONFREQ [Listen] id 208 len 10 01:18:42: Se0/0 LCP: MagicNumber 0x01DE98E6 (0x050601DE98E6) 01:18:42: Se0/0 LCP: O CONFREQ [ACKsent] id 109 len 14 01:18:42: Se0/0 LCP: AuthProto PAP (0x0304C023) 01:18:42: Se0/0 LCP: MagicNumber 0x042BA23D (0x0506042BA23D) 01:18:42: Se0/0 LCP: I CONFREJ [ACKsent] id 109 len 8 01:18:42: Se0/0 LCP: AuthProto PAP (0x0304C023) (redundant lines removed) 01:18:42: Se0/0 PPP: Closing connection because remote won't authenticate 01:18:42: Se0/0 LCP: O TERMREQ [ACKsent] id 111 len 4 01:18:42: Se0/0 LCP: O CONFREQ [TERMsent] id 112 len 14 01:18:42: Se0/0 LCP: AuthProto PAP (0x0304C023) 01:18:42: Se0/0 LCP: MagicNumber 0x042BA23D (0x0506042BA23D) 01:18:42: Se0/0 LCP: I TERMACK [TERMsent] id 111 len 4 01:18:42: Se0/0 LCP: State is Closed 01:18:42: Se0/0 PPP: Phase is DOWN 01:18:42: Se0/0 PPP: Phase is ESTABLISHING, Passive Open 01:18:42: Se0/0 LCP: State is Listen 01:18:44: Se0/0 LCP: TIMEout: State Listen 381
Watch out! This one can really be tough to stop on your router. Remember your up arrow to quickly find the “undebug all” to try stopping this. You may even have to disconnect the line again to help slow down the debug messages even after you have turned off all debugging. Then do it on the other end of the serial line (router “leftist”): leftist (config)#int s0/1 leftist (config-if)#enc ppp leftist (config-if)#ppp authentication pap leftist (config-if)#ppp pap sent-username prophet password legodoom leftist (config-if)#exit leftist(config)#username prophet password legodoom As soon as you put in the ppp pap username/passwords you should see something like this: leftist(config)#int s0/1 leftist(config-if)#ppp pap sent-username prophet password legodoom leftist(config-if)#01:23:27: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1, changed state to up leftist(config-if)#01:23:29: %LINK-3-UPDOWN: Interface Serial0/1, changed state to up leftist(config-if)# Notice the process here…the line protocol comes up then the state comes up. 6. Let’s look at our PAP negotiation process: 1. leftist#debug ppp negotiation 2. PPP protocol negotiation debugging is on 3. leftist# 4. 01:24:37:%LINK-3-UPDOWN: Interface Serial0/1, changed state to down 5. 01:24:37: Se0/1 IPCP: State is Closed 6. 01:24:37: Se0/1 CDPCP: State is Closed 7. 01:24:37: Se0/1 PPP: Phase is TERMINATING 8. 01:24:37: Se0/1 LCP: State is Closed 9. 01:24:37: Se0/1 PPP: Phase is DOWN 10. 01:24:37: Se0/1 IPCP: Remove route to 200.200.200.1 11. 01:24:38: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1, changed state to down 12. 01:24:46: %LINK-3-UPDOWN: Interface Serial0/1, changed state to up 13. 01:24:46: Se0/1 PPP: Treating connection as a dedicated line 14. 01:24:46: Se0/1 PPP: Phase is ESTABLISHING, Active Open 15. 01:24:46: Se0/1 LCP: O CONFREQ [Closed] id 76 len 14 16. 01:24:46: Se0/1 LCP: AuthProto PAP (0x0304C023) 17. 01:24:46: Se0/1 LCP: MagicNumber 0x01E48949 (0x050601E48949) 18. 01:24:46: Se0/1 LCP: I CONFREQ [REQsent] id 187 len 14 19. 01:24:46: Se0/1 LCP: AuthProto PAP (0x0304C023) 382
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Learning by Doing: CISCO Certified
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About the Author Matthew Basham is
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Acknowledgements Preface Table of C
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Basic Access Control Lists 342 Exte
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Searching CISCO for CCNA Test infor
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Figure 5—Scroll down to CCNA exam
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Objective: This lab is designed to
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g. If you really have some time to
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C:\ |___CDDROM\ |___MY_Documents\ |
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Sometimes we do not always know or
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find format keyb label mode more nl
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WINREP.EXE WINFILE.EXE WINHELP.EXE
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pause copy c:\temp\matt.txt c:\temp
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Cool Windows 95/98 Utilities KRNL38
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Changing TCP/IP Settings on Your Co
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Gateway Tab Figure 4—Putting in a
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Paper Lab: ICONS for Computer Diagr
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CISCO Net Ranger—CISCO security d
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Laptop—ditto. File server—Used
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Firewall—Network Address Translat
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Paper Lab: Proper Cable for the Pro
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Rollover (ro): Used for connecting
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Change hubs to switches: 38
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Add in a web access: DSU/CSU WWW 40
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4. Click on the file and print shar
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Figure 7—Selecting the options fo
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You should see something like this:
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purpose. Check your documentation.
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Now along the column headings we se
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Let’s try another one: 223. Start
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Then, using a different color marke
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Let me just walk through one more
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2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 128
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For example, lets convert the binar
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To convert a large hexadecimal numb
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Network Data Link Physical Provides
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Encapsulation As we move down the O
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Session Transport Network Data Link
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Objective: To be able to learn more
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There are all kinds of other topolo
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Supplemental Lab or Challenge Activ
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The Start of Frame Delimiter (SOF)
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The Control (con) is 1 byte long an
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The Options (Opt) field can vary in
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only one port at a time. The hub al
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1 3 5 7 Workstation Workstation Wor
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Supplemental Labs or Challenge Acti
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9. Collision Domains: ____________
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Paper Lab: Subnetting Objective: To
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12. Routers pass packets between __
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2. Which of the following dotted no
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18. Select the IP address for the s
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12. What is the decimal to binary c
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4. How many possible subnets can be
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16. How would the host field be exp
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Subnet masking 1. How would the sub
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Whole enchilada problems 1. Which o
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Objective: To learn how to design n
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Subnetting Example: John’s Brewho
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Intermediate DOS Lab: Troubleshooti
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7. We know we have good connections
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DHCP Lab Objective: To learn about
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5. Notice how our address may diffe
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Free Protocol Inspector Objective:
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Objective: To learn how to use a pr
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Notice how we have three frames wit
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5. Type cd pub to change to the pub
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Protocols and the OSI Model Objecti
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DECnet Suite OSI Model 7 Protocol 6
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Layer 2 Technologies: LAN’s OSI M
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Supplemental Labs or Challenge Acti
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Once you click “connect” you sh
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Fun Ports to Surf with Telnet To op
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6. Make sure you have the following
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(Step 1) Configure a connection on
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. Double-click on “dial-up networ
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Step-By-Step Instructions: 1. You a
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Figure 5d—Isn’t that nice? 4. C
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Your Modem and You Objective: This
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AT&F load factory defaults and sett
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Part 2: Basic Routing I 154
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More importantly to you right now i
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Ethernet Console AUX Power Power Po
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Objective: To become familiar with
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9. Write down what you see on the w
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outer#terminal history size 5 17. U
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Other modes you may use include: co
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Objectives: To more fully understan
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So let’s look at a boot sequence
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Step-by-Step Instructions: 1. Hook
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NVRAM Flash RAM/DRAM ROM CPU Serial
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Basic Router Configuration Objectiv
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8. Once you have determined that yo
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Basic Rip Objectives: To learn abou
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It’s ok if you see it, but you pr
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Gateway of last resort is not set C
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Step-by-Step Instructions: 1. Troub
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Input queue: 0/75/0 (size/max/drops
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1 192.168.30.2 16 msec 16 msec * Ra
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5. Finally, do not forget about tho
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Loopback Interfaces Objectives: To
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2. We can use a loopback interface
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C:\WINDOWS\Desktop>ping 22.22.22.22
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Basic RIP with Protocol Inspector O
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5. Wait two minutes. Remember, you
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Router Telnet Lab Objective: To lea
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william#debug telnet Incoming Telne
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Addressing: Routers Hostnames Phibe
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On Optik you should see: optik#debu
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Scenario 3: Hostnames Phiber Optik
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5. Setup the workstations with IP a
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RIP metrics and the Limitations of
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Interface Send Recv Key-chain Ether
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Step-by-Step Instructions: 1. Cable
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Subnetting with DHCP Objectives: To
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Objective: To learn how to implemen
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So What Have I Learned Here? In thi
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Workstations A B IP 161.20.2.2 161.
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Now let’s explore some of the oth
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Overcoming Problems with Routing Lo
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RIP Version 2 and Redistribution wi
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9. Use your knowledge of debug comm
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Prompt Command Shortcut Description
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Design a network using VLSM and the
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Troubleshooting scenarios for Part
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Switch Maintenance Objective: In th
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Remember how we just put in a passw
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Just click on “yes” to clear th
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Step-By-Step Instructions: 1. You s
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Figure 2—STP showing cost of 10.
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Intermediate STP Objective: To be a
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connection to the root switch. That
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8. Change the cost of port 7 back t
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4. Now we need to assign ports to t
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c. Click on [A] for add a VLAN (thi
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Mixing it up: VLAN’s with STP Obj
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Subnetting Example: ABC Packaging O
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4. Stop the capture. You should see
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Part 3 Command Review Objective: To
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Whole Enchilada/Crazy Insano Lab #1
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Paper Lab: CISCO Three-Layer Hierar
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Protocol Deathmatch: RIP versus RIP
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company and control access between
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Step-By-Step Instructions: 1. Set u
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Guest Router Name Derivation In 199
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Workstations A B IP 200.150.100.2 2
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I 202.150.100.0/24 [100/8576] via 2
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Here we can see the entry for netwo
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Redistribution of IGRP and RIP Obje
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3. Now we can see how this affects
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dennis(config)#router rip dennis(co
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Gateway of last resort is not set I
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to add the extra metrics statements
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7. Notice the reachable/not reachab
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(VLSM/CIDR). OSPF on a wider scale
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wash# leung#sh ip ospf Routing Proc
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Border Gateway Protocol (BGP) Objec
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3. Let’s add in the BGP. It too u
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BGP table version is 24, local rout
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What time interval for each protoco
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Basic IP/IPX with Dynamic Routing O
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gibson#ping ipx 0000.1234.1111 % Un
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gibson#debug ipx sap ? activity IPX
Page 338 and 339: IPX Lab Diagram: network 100 enc SA
Page 340 and 341: 7. Now let’s try that ping IPX ag
Page 342 and 343: Objective: To learn how to create w
Page 344 and 345: Paper Lab: Access Control Lists Obj
Page 346 and 347: Now we just need to do the second s
Page 348 and 349: Now let’s try to “free-hand”
Page 350 and 351: 4. Make four text files and put one
Page 352 and 353: 10. Try the shortcut to the 192.168
Page 354 and 355: Objective: To implement an extended
Page 356 and 357: 8. Now let’s try the show access
Page 358 and 359: Objective: To implement a named acc
Page 360 and 361: Supplemental Lab or Challenge Activ
Page 362 and 363: actually build a mini-protocol insp
Page 364 and 365: Log Buffer (4096 bytes): 00:27:14:
Page 366 and 367: Firewall Basics using Reflexive ACL
Page 368 and 369: 7. Even though that ACL works let
Page 370 and 371: Prompt Command Shortcut Description
Page 372 and 373: Whole Enchilada/Crazy Insano Lab #2
Page 374 and 375: Registering for Your CCNA Exam Obje
Page 376 and 377: 3. Configure the router to receive
Page 378 and 379: Point-to-Point Protocol (PPP) Objec
Page 380 and 381: MTU 1500 bytes, BW 128 Kbit, DLY 20
Page 382 and 383: So what have I learned here? In thi
Page 384 and 385: PAP (Password Authentication Protoc
Page 386 and 387: 00:54:36: Se0/0 IPCP: O CONFREQ [Cl
Page 390 and 391: 20. 01:24:46: Se0/1 LCP: MagicNumbe
Page 392 and 393: “real-world” scenario. Undo all
Page 394 and 395: Remote Access DUN with PPP Encapsul
Page 396 and 397: lord(config)#ipx routing 0000.BBBB.
Page 398 and 399: Setting up a Router to be a Frame R
Page 400 and 401: Objective: To learn how to set up a
Page 402 and 403: turner#sh frame-relay pvc PVC Stati
Page 404 and 405: Step-By-Step Instructions: 1. Cable
Page 406 and 407: Fully-Meshed Frame Relay with 3 Rou
Page 408 and 409: Shadow 16 17 18 18 Diekman 17 16 Kn
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Page 412 and 413: Frame Relay Operation and Troublesh
Page 414 and 415: network we will see all but our own
Page 416 and 417: 7. Wrong ip address/mask Here I jus
Page 418 and 419: outer#sh frame map Serial0/0 (up):
Page 420 and 421: 3. Configure the ISDN interface on
Page 422 and 423: Challenge Lab or Supplemental Activ
Page 424 and 425: 3. Configure the ISDN interface on
Page 426 and 427: 00:21:08: %LINEPROTO-5-UPDOWN: Line
Page 428 and 429: Data Link Layer Two things happen h
Page 430 and 431: 00:13:27: %LINEPROTO-5-UPDOWN: Line
Page 432 and 433: In line 1 we see our Q931 requestin
Page 434 and 435: Type escape sequence to abort. Send
Page 436 and 437: 36. IPCP: Install route to 192.168.
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Last C/I to ISDN transceiver: AI:Ac
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kissane#sh controller bri BRI unit
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05:04:35: BR0/0:2 DDR: disconnectin
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Type escape sequence to abort. Send
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Sending 5, 100-byte ICMP Echos to 1
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kissane#debug ppp nego PPP protocol
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kissane#debug ppp nego PPP protocol
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06:47:25: BR0/0:1 PPP: Treating con
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Step-By-Step Instructions: 1. Confi
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7. Try to ping the loopback. You sh
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Frame Relay with ISDN Backup Object
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So what have I learned here? In thi
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Prompt Command Shortcut Description
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Coming In the Next Version of the T
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Did you like this book? There’s m
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