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

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Protocol Deathmatch: RIP versus RIPv2 Objectives: To be able to discern between RIP and RIPv2 and when to use each. (A good review of part 2) Lab Design: Workstation “A” Router name: robert morris worm Workstation “B” Step-by-Step Instructions for RIP: 1. Set up the network shown using a 24-bit mask with a Class “C” private address using RIP as the routing protocol. Don’t forget to advertise the routes. 2. Test ping from workstation A to workstation B. 3. Do a trace route from workstation A to workstation B. 4. On each router view and record its routing table. 5. Turn on all debug on Robert and Worm. 6. Test ping from workstation A to workstation B and view the ICMP messages on Robert and Worm. 7. Change the serial lines to a 30-bit mask. (hint: the IP numbers will also need to be changed). 8. Repeat steps 2-6. About 60% of the time you will not be able to ping from workstation A to workstation B. A known quirk with RIP. Don’t sweat it if it works. 9. Switch to using RIP version 2 on all routers. 10. Repeat steps 2-6. So why do you think it works with RIPv2 and not RIP? Why or when would you use RIPv2 instead of RIP? Why or when would you use RIP instead of RIPv2? Guest Router Name Derivation In 1991 Robert Morris became the first individual convicted for violating the 1986 Federal Computer Fraud and Abuse Act. He created an internet worm as part of a graduate school project whose sole purpose was to expose security vulnerabilities in networks so that network administrators could pro-actively fix any security holes. Unfortunately the project went amiss and computer networks crashed left and right when it was released errantly on the Internet. In hind-sight he should have kept it a little better under control. It just goes to show you that good intentions also get punished… “ignorance of the law is no excuse.” 283
Basic IGRP Objective: To learn about the basics of the Interior Gateway Routing Protocol (IGRP) by making a small network. Tools and Materials: (2) PC/workstations (2) Routers (2) Switches (4) Straight-through cables (1) DCE serial cable (1) DTE serial cable (2) rollover cables Lab Diagram: e0 st con s0 s1 con st e0 NIC st ro ro st COM1 COM1 NIC Workstation “A” Workstation “B” Addressing: Routers Hostnames John Draper E0 184.34.67.1/16 184.36.67.1/16 S0 184.35.67.1 (DCE) n/a S1 n/a 184.35.67.2/16 (DTE) Workstations A B IP 184.34.67.3 184.36.67.3 SM 255.255.0.0 255.255.0.0 GW 184.34.67.1 184.36.67.1 Background: IGRP is proprietary distance-vector routing protocol created by CISCO in the later 1980’s to overcome some of the limitations of RIP. It uses bandwidth and delay by default as its metrics. It can, however, use other metrics such as reliability, load, and MTU. IGRP uses autonomous numbers for setting up its routing protocol. An autonomous system number is used to set up many different IGRP networks within our 284
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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.
Page 240 and 241: Now let’s explore some of the oth
Page 242 and 243: Overcoming Problems with Routing Lo
Page 244 and 245: RIP Version 2 and Redistribution wi
Page 246 and 247: 9. Use your knowledge of debug comm
Page 248 and 249: Prompt Command Shortcut Description
Page 250 and 251: Design a network using VLSM and the
Page 252 and 253: Troubleshooting scenarios for Part
Page 254 and 255: Switch Maintenance Objective: In th
Page 256 and 257: Remember how we just put in a passw
Page 258 and 259: Just click on “yes” to clear th
Page 260 and 261: Step-By-Step Instructions: 1. You s
Page 262 and 263: Figure 2—STP showing cost of 10.
Page 264 and 265: Intermediate STP Objective: To be a
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Page 268 and 269: 8. Change the cost of port 7 back t
Page 270 and 271: 4. Now we need to assign ports to t
Page 272 and 273: c. Click on [A] for add a VLAN (thi
Page 274 and 275: Mixing it up: VLAN’s with STP Obj
Page 276 and 277: Subnetting Example: ABC Packaging O
Page 278 and 279: 4. Stop the capture. You should see
Page 280 and 281: Part 3 Command Review Objective: To
Page 282 and 283: Whole Enchilada/Crazy Insano Lab #1
Page 288 and 289: Paper Lab: CISCO Three-Layer Hierar
Page 292 and 293: company and control access between
Page 294 and 295: Supplemental Lab or Challenge Activ
Page 296 and 297: Step-By-Step Instructions: 1. Set u
Page 298 and 299: Guest Router Name Derivation In 199
Page 300 and 301: Workstations A B IP 200.150.100.2 2
Page 302 and 303: I 202.150.100.0/24 [100/8576] via 2
Page 304 and 305: Here we can see the entry for netwo
Page 306 and 307: Redistribution of IGRP and RIP Obje
Page 308 and 309: 3. Now we can see how this affects
Page 310 and 311: dennis(config)#router rip dennis(co
Page 312 and 313: Gateway of last resort is not set I
Page 314 and 315: to add the extra metrics statements
Page 316 and 317: 7. Notice the reachable/not reachab
Page 318 and 319: Supplemental Lab or Challenge Activ
Page 320 and 321: (VLSM/CIDR). OSPF on a wider scale
Page 322 and 323: wash# leung#sh ip ospf Routing Proc
Page 324 and 325: Border Gateway Protocol (BGP) Objec
Page 326 and 327: 3. Let’s add in the BGP. It too u
Page 328 and 329: BGP table version is 24, local rout
Page 330 and 331: What time interval for each protoco
Page 332 and 333: Basic IP/IPX with Dynamic Routing O
Page 334 and 335: gibson#ping ipx 0000.1234.1111 % Un
Page 336 and 337: gibson#debug ipx sap ? activity IPX
Page 338 and 339: IPX Lab Diagram: network 100 enc SA
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7. Now let’s try that ping IPX ag
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Objective: To learn how to create w
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Paper Lab: Access Control Lists Obj
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Now we just need to do the second s
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Now let’s try to “free-hand”
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4. Make four text files and put one
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10. Try the shortcut to the 192.168
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Objective: To implement an extended
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8. Now let’s try the show access
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Objective: To implement a named acc
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actually build a mini-protocol insp
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Log Buffer (4096 bytes): 00:27:14:
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Firewall Basics using Reflexive ACL
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7. Even though that ACL works let
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Prompt Command Shortcut Description
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Whole Enchilada/Crazy Insano Lab #2
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Registering for Your CCNA Exam Obje
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3. Configure the router to receive
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Point-to-Point Protocol (PPP) Objec
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MTU 1500 bytes, BW 128 Kbit, DLY 20
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So what have I learned here? In thi
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PAP (Password Authentication Protoc
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00:54:36: Se0/0 IPCP: O CONFREQ [Cl
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4. Let’s turn off debugging. Use
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20. 01:24:46: Se0/1 LCP: MagicNumbe
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“real-world” scenario. Undo all
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Remote Access DUN with PPP Encapsul
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lord(config)#ipx routing 0000.BBBB.
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Setting up a Router to be a Frame R
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Objective: To learn how to set up a
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turner#sh frame-relay pvc PVC Stati
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Step-By-Step Instructions: 1. Cable
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Fully-Meshed Frame Relay with 3 Rou
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Shadow 16 17 18 18 Diekman 17 16 Kn
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interface connections for #16 and #
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Frame Relay Operation and Troublesh
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network we will see all but our own
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7. Wrong ip address/mask Here I jus
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outer#sh frame map Serial0/0 (up):
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3. Configure the ISDN interface on
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Challenge Lab or Supplemental Activ
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3. Configure the ISDN interface on
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00:21:08: %LINEPROTO-5-UPDOWN: Line
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Data Link Layer Two things happen h
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00:13:27: %LINEPROTO-5-UPDOWN: Line
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In line 1 we see our Q931 requestin
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Type escape sequence to abort. Send
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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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