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CS 607: LAN Connectivity (Spring 2010)

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	Assignments : Jump to: February, March, April, May
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Announcements

Required for all Assignments

Required Text

Reference Texts

Assignments

In Class

• The Class Web page is located at CVibes.net. (No www. prefix!)
  • All assignments, reading and written, will be posted only at CVibes.net
  • Assignments will never be posted in Blackboard
• Blackboard via the CUNY Portal
  • Exams and quizzes will be administered via Blackboard
  • Make sure that you know your CUNY Portal user name and password. If you don't already have a CUNY Portal ID, then Register Now
  • Log into Blackboard to verify that you have access as soon as possible
• News:
  • Flaw in versions 6, 7, and 8, of Internet Explorer. Google, Adobe, and many other companies were hacked because this flaw.
  • 16-bit VM flaw in all versions of Windows
• Why You Should Not Run as an Administrator or Root User
  • Principle of Least Privilege
• How and Why you should Disable AutoPlay / AutoRun in Windows
• Backing Up: 3-2-1 Rule
  • 3: Have three copies of your files. The original, plus 2 copies
  • 2: On different storage mediums. e.g. separate hard drive, optical (CD/DVD), tape
  • 1: Have a current backup offsite / online :
    • Carbonite.com, JungleDisk with Amazon S3, Gmail Sync
• Synchronizing files and directories to backup media
  • SyncToy 2.1
  • AllwaySync
• Windows Home Server
  • Windows Home Server Review by Paul Thurrott
• Malware (short for malicious software)
• The key to solving the malware problem is avoidance, not detection and removal.
• Rootkits : You can never be sure you've gotten rid of one.
• Protocol Review:
  • DNS (Domain Name System) (or Service or Server)
  • DHCP (Dynamic Host Configuration Protocol)
  • NAT (Network Address Translation)
• Review: Troubleshooting Client Network Connectivity
  • Automatic Private IP Addressing (APIPA)
    • IPv4 Link-Local address assignment (IPV4LL)
    • The Internet Assigned Numbers Authority (IANA) has reserved 169.254.0.0-169.254.255.255 (169.254.0.0/16) for Automatic Private IP Addressing. As a result, APIPA provides an address that is guaranteed not to conflict with routable addresses.
    • How to use automatic TCP/IP addressing without a DHCP server
  • IPConfig /all
  • Ping

Read

• Chapter 19 of Data Communications and Networking, 4th Ed.
• Microsoft warns of flaw in 32-bit Windows kernel
• Microsoft fixes 8 IE holes, including one used in attacks
  • Microsoft Security Advisory (979352): Vulnerability in Internet Explorer Could Allow Remote Code Execution
• Classless Inter-Domain Routing (CIDR)
• Automatic Private IP Addressing (APIPA)

Do

• Assignment #1, Due Tues. 2/2/2010
  • Review Questions 1 - 10 at the end of Chapter 19, pg. 574
  • Submit a typed hardcopy (with the questions) at the beginning of class.
    • Make sure to have an extra hardcopy for yourself to use during class. We will go over the review questions and exercises in class without the use of the computers.
  • Remember: No late assignments will be accepted

• Send me an e-mail, before 9AM tomorrow, from the e-mail address I will use to contact you for the rest of the semester.
  • You must include your first and last names and your daytime or mobile phone number.

February

In Class

• Assignment #1 Debriefing
• Protocol Review:
  • OSI Reference Model (pdf)
• Classfull IP Addressing
• The destinction between "Mask" and "Default Mask" (p. 553)
• Wireless Network Security
  • WEP (Wired Equivalent Privacy) : Due to known security issues with WEP encryption, it is recommended that you use only WPA2-Personal-PSK (preferred) or WPA PSK. WEP can easily be cracked in under a minute.
  • Wi-Fi Protected Access (WPA and WPA2)
  • Wi-Fi Protected Access 2 (WPA2) update for Windows XP SP2
  • When using WPA2, use AES encryption only, instead of TKIP+AES
    • SecurityNow! Episode 170 discusses the TKIP (Temporal Key Integrity Protocol) hack
• GRC's Ultra High Security Password Generator

Read

• Chapter 19 of Data Communications and Networking, 4th Ed.
• Read Appendix B: Numbering Systems.
  • Pay special attention to section B.4 Base 256: IP Addresses
• Principle of Least Privilege
• Why You Should Not Run as an Administrator or Root User

Do

• Memorize the OSI Reference Model
• Send me an e-mail from the e-mail address I will use to contact you for the rest of the semester.
  • You must include your first and last names and your daytime or mobile phone number.

In Class

• TCP/IP Tutorials and TCP/IP Links
• Classless IP Addressing
• Converting from decimal to binary
• Determine the network address by ANDing the binary subnet mask with a binary IP address
  • ANDing 2 bits: If both bits are 1, then the result is 1. Otherwise, the result is 0.
  • ORing 2 bits: If both bits are 0, then the result is 1. Otherwise, the result is 0.
• How to: Convert a Decimal Number to an IP Address (Base 256)
• TCP/IP Ports
  • The port number identifies the protocol or process used for communication
  • The state of TCP/IP ports are: Open or Closed or Stealth
    • Stealth means that a port is closed "and" does not return a response to a query.
• SecurityNow! Netcast by Steve Gibson and Leo Laporte

Read

• View: OSI Model Training Tutorial (1 of 3)
• View: OSI Model Training Tutorial (2 of 3)
• View: OSI Model Training Tutorial (2 of 3)
• View: Understanding the OSI Reference Model by Cisco Systems & presented by Eric Jefferson

Do

• Assignment #2, Due Tues. 2/9/2010
  • Do Exercise Questions 12 - 38 (even numbered only) at the end of Chapter 19, pgs. 575 - 577
  • Submit a typed hardcopy (with the questions) at the beginning of class.
    • Make sure to have an extra hardcopy for yourself to use during class. We will go over the exercises in class, and the computers will be turned off
  • Remember: No late assignments will be accepted.
• Use ShieldsUp to test your firewall and router to see if you have any open or closed ports.
  • Give me a status report on the state of your ports at the beginning of our next class.

In Class

• News
  • Comcast starts IPv6 trials: Comcast will begin in April a series of public trials of three different mechanisms that are aimed at helping the Philadelphia-based ISP transition its network to IPv6, the next-generation Internet Protocol.
• ShieldsUp Results
  • How many of your computers had open ports?
  • Which ports were open?
• Determining the number of bits to use for netid or hostid

Memorize these Bit Patterns and Common Mask Values

10000000 = 128
11000000 = 192
11100000 = 224
11110000 = 240
11111000 = 248
11111100 = 252
11111110 = 254
11111111 = 255

Subnets / Bits / Subnet Mask Cross-reference

• Logarithm (2 to the how many bits would give us the value of x?)
• Three Levels of Hierarchy: Subnetting (p. 559)

Read

• IPv6: The essential guide : 10 must-read stories about the next-generation Internet Protocol
• IPv4 subnetting reference
• Subnetwork

Do

• Read: Chapter 20 of Data Communications and Networking, 4th Ed.

In Class

• Assignment #2 Debriefing
  • Determining the last address of a subnet
  • Determining the first address and the last address of the 1,024th subnet

Read

• IPv4 subnetting reference
• Subnetwork

Do

• Study for Quiz 1 on Tuesday

In Class

• Unicast, Broadcast, Multicast
• localhost / 127.0.0.1 / Loopback Address
• Network Address Translation (NAT) [Ch. 19, p. 563]
• Media Access Control (MAC) address
  • Decoding
• Quiz #1: Covering, but not limited to the following:
  • Chapter 19: Network Layer: Logical Addressing
    • All key words from chapter 19
  • Subnetting and IP block allocation
    • Determine how many bits are needed for the netid. (Bits to borrow)
    • Determine how many bits are needed for the hostid.
    • Determine the subnet mask
    • ANDing the subnet mask with an IP address to determine the network address.
    • Converting a decimal to Base-256
    • Converting from decimal to binary
    • Converting from binary to decimal
  • OSI Reference Model (See Chapter 2: pgs. 29 - 50)
    • All 7 layers of the OSI Reference Model (Layer number, Layer name, Layer function)
      • Layer numbers
      • Layer names
      • The responsibilities/functions of each layer
      • Which layers major protocols function on. e.g. TCP, UDP, IP, Telnet, FTP, etc.
    • Which devices operate at which layers. e.g. Switches, Routers, Hubs, NIC's, etc.
  • Status/Troubleshooting Commands for hosts/Windows PC's
    • ipconfig, ping

Read

• Chapter 20 of Data Communications and Networking, 4th Ed.

Do

• Quiz 2: Due Friday 2/19/2010 no later than 8PM in Blackboard.

Read

• Chapter 20 of Data Communications and Networking, 4th Ed.
• Understanding IP Addressing: Everything You Ever Wanted To Know by Chuck Semeria
  
• TCP/IP Tutorials and TCP/IP Links
• Converting from Decimal to Base-256 (Revised)
  

In Class

• Quiz 1 Debriefing
• Assignment #2 Debriefing, continued

Read

• Chapter 20 of Data Communications and Networking, 4th Ed.

Do

• Complete Q. 26 from Chapter 19

In Class

• Assignment #2 Debriefing, continued. (Chapter 19 Q. 26)

Read

• Chapter 20 of Data Communications and Networking, 4th Ed.

Do

• Do Questions 26 and 27 from Chapter 19 again to make sure that you fully understand how to subnet and convert a decimals to Base-256.

March

In Class

• Another Subnetting Method
• localhost / 127.0.0.1 / Loopback Address

Read

• Chapter 20 of Data Communications and Networking, 4th Ed.

Do

• Assignment #3, Due Tues. 3/9/2010
  • Do Exercise Questions 2 - 24 (even numbered only) in Chapter 20, pgs. 607 - 609
  • Submit a typed hardcopy (with the questions) at the beginning of class.
    • Make sure to have an extra hardcopy for yourself to use during class. We will go over the exercises in class, and the computers will be turned off
  • Remember: No late assignments will be accepted

In Class

• Banking Trojan steals money from under your nose
• School shows off its laptop surveillance tactics

Read

• How a Broadcsast Address Works

Do

• Assignment 4, Due Tues. 3/9/2010
  • Subnet 193.200.7.0 /24 in to subnets of at least 13 hosts per subnet. (update: 3/6/2010 8:50PM)
  • Submit a typed hardcopy (with the questions) at the beginning of class.
    • Make sure to have an extra hardcopy for yourself to use during class when we go over this assignment.
  • Remember: No late assignments will be accepted

In Class

• Assignment 3, Debriefing
• Assignment 4, Debriefing
• IPv4 Header structure
• TCP/IP Packet

Read

• Microsoft Security Intelligence Report volume 7 (January - June 2009) Summary: http://sans.org/info/55704
• Microsoft: Don't press F1 key in Windows XP
• Build Your Skills: Subnetting and supernetting IP networks

Do

In Class

• Underhanded C Contest
• IPv4 Header fields related to IP fragmentation [Ch. 20, p. 591]
  • Identification (16-bit field)
  • When a datagram is fragmented, the value in the identification field is copied to all fragments. The identification number helps the destination in reassembling the datagram. It knows that all fragments having the same identification value must be assembled into one datagram.
  • Flags (3-bit field)
  • The 1st bit is reserved
  • The 2nd bit is the do not fragment bit
  • If its value is 1, the machine must not fragment the datagram. If it cannot pass the datagram through any available physical network, it discards the datagram and sends an ICMP error message to the source host.
  • If the value is 0, the datagram can be fragmented if necessary.
  • The 3rd bit is the more fragment bit
  • If the value is 1, it means the datagram is not the last fragment
  • It the value is 0, it means this is the last or only fragment
  • Fragmentation offset. (13-bit field)
  • Shows the relative position of this fragment with respect to the whole datagram .
  • It is the offset of the data in the original datagram measured in units of 8 bytes.
• IPv6 Addresses
• Transition from IPv4 to IPv6 (3 strategies)
  • Dual Stack (p. 604)
  • Tunneling
  • Header Translation
• FOLDOC (Free On-line Dictionary of Computing)

Read

• Chapters 19, and 20

Do

• Assignment #5: Due Tues. 3/16/2010
  • Do Custom Subnet Mask problems 9 thru 16 from the IP Addressing & Subnetting Workbook handout you received in class on 3/9/2010.
• Study for Exam #1 on Tues.
• Use the flash cards and sample tests from Data Communications and Networking, 4/e: Online Learning Center

In Class

• Exam #1: Covering, but not limited to the following:
  • Chapter 19 & 20: Network Layer: Logical Addressing & Internet Protocol
    • All key words from chapter 19 & 20
  • Subnetting and IP block allocation
    • Determine how many bits are needed for the netid. (Bits to borrow)
    • Determine how many bits are needed for the hostid.
    • Determine the subnet mask or prefix
    • ANDing the subnet mask with an IP address to determine the network address.
    • Converting a decimal to Base-256
    • Converting from decimal to binary
    • Converting from binary to decimal
  • OSI Reference Model (See Chapter 2: pgs. 29 - 50)
    • All 7 layers of the OSI Reference Model (Layer number, Layer name, Layer function)
      • Layer numbers
      • Layer names
      • The responsibilities/functions of each layer
      • Which layers major protocols function on. e.g. TCP, UDP, IP, Telnet, FTP, etc.
    • Which devices operate at which layers. e.g. Switches, Routers, Hubs, NIC's, etc.
    • Encapsulation (p. 33)
  • Status/Troubleshooting Commands for hosts/Windows PC's
    • ipconfig, arp, ping, tracert, etc.
  • Transition from IPv4 to IPv6
    • The three strategies for the transition from IPv4 to IPv6, and their definitions
    • Advantages of IPv6 over IPv4

Read

• Chapter 21

Do

• Quiz 3: Due: Thu. 3/18/2010 by 7PM in Blackboard

In Class

• Subnetting Practice
• Exam 1 Debriefing

Read

• Chapter 21
• How cybercriminals invade social networks, companies

Do

• IP Subnetting Practice Problems 3, 4, 5 before class on Tuesday

In Class

• IP Subnetting Practice
• Collision Domain
• Broadcast Domain

Read

• RFC 950: Internet Standard Subnetting Procedure (August 1985 )
• RFC 1878: Variable Length Subnet Table For IPv4 (December 1995)
• Learn to Subnet
• Chapter 21

Do

In Class

• ARP (Address Resolution Protocol) packet structure
  • Computer Desktop Encyclopedia: ARP
  • ARP/RARP
  • ARP Spoofing
  • ArpON: Defending against ARP Poisoning / ARP Spoofing

Read

• Chapter 21

Do

• Assignment #6, Due Tues. 4/6/2010
  • Do Subnetting problems 6 - 15 from the handout you received in class on Thur 3/25/2010
  • Submit a hardcopy at the beginning of class.
    • Make sure to have an extra hardcopy for yourself to use during class. We will go over the exercises in class, and the computers will be turned off
  • Remember: No late assignments will be accepted
• Assignment #7, Due Thurs. 4/8/2010
  • Do Exercise Questions 2 - 28 (even numbered only) in Chapter 21
  • Submit a typed hardcopy (with the questions) at the beginning of class.
    • Make sure to have an extra hardcopy for yourself to use during class. We will go over the exercises in class, and the computers will be turned off
  • Remember: No late assignments will be accepted

April

In Class

• Assignment 6, Debriefing
• Dynamic Host Configuration Protocol (DHCP) [Ch. 21, p. 620]
  • The process of getting an IP address lease from the DHCP server
  • RFC2131
  • In addition to an IP address, what additional parameters, if any, does a host need to get from the DHCP server?
    • Subnet Mask
    • Default Gateway
    • DNS Server's IP address

• ICMP (Internet Control Message Protocol) [Ch. 21, p. 621]
  • As discussed in Chapter 20, IP provides unreliable and connectionless datagram delivery. It was designed this way to make efficient use of network resources.
  • The IP protocol is a best-effort delivery service that delivers a datagram from its original source to its final destination.
  • IP has two deficiencies: lack of error control and lack of assistance mechanisms.
  • Internet Control Message Protocol (ICMP) has been designed to compensate for the above two deficiencies. It is a companion to the IP protocol.
• ICMP messages are divided into two broad categories: error-reporting messages and query messages.
  • The error-reporting messages report problems that a router or a host (destination) may encounter when it processes an IP packet.
  • The query messages, which occur in pairs, help a host or a network manager get specific information from a router or another host.

Read

• 10 dumb things IT pros do that can mess up their networks
• Chapter 22

Do

• Remember: Assignment #7 is due this Thurs. 4/8/2010

In Class

• Assignment 7, Debriefing
• Internet Group Management Protocol (IGMP) [Ch. 21, p. 630]
  • IGMP is not a multicasting routing protocol; it is a protocol that manages group membership.
  • The IGMP protocol gives the multicast routers information about the membership status of hosts (routers) connected to the network
• Designing and Building a Multi-site Network
• Mozilla Firefox Plugin Check
• PortableApps.com

Read

• Chapter 22
• Understanding the protocols underlying dynamic routing

Do

In Class

• Designing and Building a Multi-site Network, continued
• VLAN (Virtual LAN)
• GRC's DNS Benchmark
• Introduction to Routing Protocols
  • Routing Table Example - Diagram
  • Routing Table Example - Router A
  • The minimum fields needed in a routing table:

Read

• Read Chapter 22
• Understanding the protocols underlying dynamic routing

Do

• Assignment #8, Due Tues. 4/20/2010
  • Do Exercise Questions 2 - 32 (even numbered only) in Chapter 22
    • Submit a typed hardcopy (with the questions) at the beginning of class.
      • Make sure to have an extra hardcopy for yourself to use during class. We will go over the exercises in class, and the computers will be turned off
    • Remember: No late assignments will be accepted
• Complete the routing tables for Router B and Router C

In Class

• State Subversion of SSL (SecurityNow! Episode #243)
  • Steve Gibson explains why and how world governments are able to legally compel their national SSL/TLS Certificate Authorities to issue Intermediate CA certificates which allow agencies of those governments to surreptitiously intercept, decrypt, and monitor secured SSL connections of any and all kinds.
• Introduction to Routing Protocols, continued
• Delivery of a Packet
  • Direct Delivery
    • Direct delivery occurs when the source and destination of the packet are located on the same physical network or when the delivery is between the last router and the destination host.
  • Indirect Delivery
  • If the destination host is not on the same network as the deliverer, the packet is delivered indirectly.
  • In an indirect delivery, the packet goes from router to router until it reaches the one connected to the same physical network as its final destination.
  • A delivery always involves one direct delivery but zero or more indirect deliveries.
  • The last delivery is always a direct delivery.
• How Routers Talk to Each Other
  • Autonomous System (AS)
  • Convergence (routing protocol)
  • Interior Gateway Protocol (IGP)
  • Exterior Gateway Protocol (EGP)
  • Border Gateway Protocol (BGP)
  • Distance-vector routing protocol
  • Link-state Routing Protocol
  • Routing Information Protocol (RIP)
• Routing protocols:
  • An interior gateway protocol (IGP) is a routing protocol that is used within an autonomous system (AS).
  • The interior gateway protocols can be divided into two categories
    • Distance-vector routing protocols
      • (RIP, IGRP, EIGRP)
      • A distance-vector routing protocol requires that a router informs its neighbors of topology changes periodically and, in some cases, when a change is detected in the topology of a network.
    • Link-state routing protocols
      • (OSPF, Intermediate System to Intermediate System (IS-IS) )
    • link-state protocols require a router to inform all the nodes in a network of topology changes
  • An Exterior Gateway Protocol (EGP) is used to connect autonomous systems.
    • Border Gateway Protocol (BGP) is the core routing protocol of the Internet.

Read

• Escape From PDF by Didier Stevens
• PDF "/Launch" Social Engineering Attack
• Adobe Acrobat & Reader Tips

Do

• Bring a USB Flash Drive to class on Tuesday

In Class

• Assignment #8 Debriefing
• Routing and Forwarding, continued
• Distinction Between the Types of Routing Protocols
  • Distance-vector routing protocol
    • A distance-vector routing protocol requires that a router informs its neighbors of topology changes periodically and, in some cases, when a change is detected in the topology of a network.
  • Link-state routing protocol
    • link-state protocols require a router to inform all the nodes in a network of topology changes
  • Path Vector Routing Protocol
    • A path vector protocol is a network routing protocol which maintains the path information that gets updated dynamically.
    • Entries in the routing table contain the destination network, the next router and the path to reach the destination.
• Internet Group Management Protocol (IGMP) [Ch. 21, 630]
  • IGMP is not a multicasting routing protocol; it is a protocol that manages group membership.
  • The IGMP protocol gives the multicast routers information about the membership status of hosts (routers) connected to the network.
• Forwarding Techniques [Ch. 22, p. 648]
  • Techniques to make the size of the routing table manageable and also handle issues such as security.
  • Next-Hop Method vs. Route Method
    • The routing table holds only the address of the next hop instead of information about the complete route (route method).
  • Network-Specific Method vs. Host-Specific Method
    • Instead of having an entry for every destination host connected to the same physical network (host-specific method), we have only one entry that defines the address of the destination network itself.
  • Default Method
• Using Windows Briefcase to synchronize files
  • Microsoft SyncToy 2.1
  • Allway Sync

Read

• Smart SOHOs Don't Do RAID
• Inside one of the world's largest data centers

Do

• Practice subnetting for the Quiz on Thursday

In Class

• Visual Studio 2010 has been released
  • Express editions are free to all
  • Students can get the professional version for free via the Microsoft DreamSpark program.
• Quiz #4: Subnetting
  • You'll need to be able to determine the following:
• number of bits to borrow
• the subnet mask and prefix
• number of addresses per subnet
• number of subnets
• the range of total addresses in each subnet
• convert the number of addresses per subnet to a Base-256 / dotted-decimal
• the subnet address and range for the n^th subnet. (include subnet zero)
• the subnet address and range for subnet number n
• The number of subnets/networks on a network diagram
  • Remember that the connection between routers is also a network
  • Remember that each interface on the router connects to a different network
• Bring in a calculator for the quiz. Preferably one that can do: x^y

Read

• Job: School Computer Technology Specialist (02M519) - Close Date: April 23, 2010
• How Routers Work
• IP Routing in 40 Short Steps by Todd Lammle
  • The diagram I created should be much clearer to understand, than the one in the article.
    

Do

In Class

• Quiz #4, debriefing
• IP Routing in 40 Short Steps

Read

• Digital Photocopiers Loaded With Secrets
  • Video
  • IT Administrators May Be Overlooking Copier/Printer Security Risks
• Zeus botnet jumps on PDF design flaw
  • Zeus Trojan found on 74,000 PCs in global botnet
• Update ASAP to Java v6 Update 20 or newer
  • Verify Java Version
  • Java flaw exposes Windows users to attacks
  • Unpatched Java hole exploited at lyrics site
• Modern banker malware undermines two-factor authentication
• Chapter 23

Do

• Assignment #9, Due Tues. 5/4/2010
  • Do Exercise Questions 2 - 34 (even numbered only) in Chapter 23
    • Submit a typed hardcopy (with the questions) at the beginning of class.
      • Make sure to have an extra hardcopy for yourself to use during class. We will go over the exercises in class, and the computers will be turned off
    • Remember: No late assignments will be accepted

In Class

• Cisco IOS
• Cisco IOS Router Command Reference
• RouterSim's CCNA Network Visualizer 6.0
• Exam #2 will be on Tues 5/11/2010
  • Chapters 21, 22, and DHCP handshake
• Client/Server Paradigm
• Process-to-Process Delivery

Read

• Chapter 23

Do

May

In Class

• Assignment #9 Debriefing
• Chapter 23 summary
• Cisco Router hands-on intro.
• Building the Routing Table from a network diagram

Read

• Chapter 24: Congestion Control and Quality of Service

Do

• Study for Exam 2

In Class

• OSPF (Open Shortest Path First)
• Wildcard mask
• How to document your router configurations
• Lab-01 (2 LANs, 2 Routers, with RIP Routing Protocol)
  • Instructions, Network Diagram
• Lab 02 (2 LANs, 2 Routers, with OSPF Routing Protocol)
  • Instructions

Read

Do

• Complete Lab 01 and Lab 02
  • All the computer labs on the 9th floor have RouterSim installed.
• Study for Exam 2

In Class

• Completion of Lab 01 and Lab 02
• Exam 2
  • Chapter 21: Network Layer: Address Mapping, Error Reporting, and Multicasting
  • Chapter 22: Network Layer: Delivery, Forwarding, and Routing
    • Autonomous System (AS)
    • Interior Gateway Protocol (IGP)
    • Exterior Gateway Protocol (EGP)
    • Border Gateway Protocol (BGP) is the accepted standard for Internet routing.
    • Path vector protocol
    • Distinction Between the Types of Routing Protocols
      • Distance-vector routing protocols: (RIP, IGRP, EIGRP)
      • Link-state routing protocols: (OSPF)
    • Direct Delivery of packets
    • Indirect Delivery of packets
    • Forwarding Techniques
      • Next-Hop Method vs. Route Method
      • Network-Specific Method vs. Host-Specific Method
      • Default Method
    • Forwarding Process
      • Address aggregation [p. 652]
      • Longest Mask Matching [p. 652]
      • Hierarchical Routing [p. 653]
      • Geographical Routing  [p. 655]
  • Dynamic Host Configuration Protocol (DHCP)
    • The Handshake
      • Discover -->
      • Offer <--
      • Request -->
      • Acknowledge <--
      • The name of each message that you would see in each packet
      • Whether a specific phase is broadcast or unicast
      • The details of each phase, especially on networks with more than one DHCP server.
    • What is the purpose of a DHCP scope or pool?
    • What would be the first octet of the IP address on a Windows client that failed to get an IP address from the DHCP server?

Read

• Analyzing a Routing Table

Do

• Quiz 5: Due: Thursday 5/13/2010

In Class

• Exam 2 Debriefing
• OSPF
  • Designated Router (DR)
  • Backup Designated Router (BDR)
• Serial Interfaces
  • DTE vs DCE
  • Clock rate
• Lab 03 (2 LANs, 2 Routers, OSPF, Serial)
  • Instructions

Read

• The IP routing table
• Chapter 25

Do

• Assignment #10, Due Thurs. 5/20/2010
  • Do Exercise Questions 2 - 20 (even numbered only) in Chapter 25
    • Submit a typed hardcopy (with the questions) at the beginning of class.
      • Make sure to have an extra hardcopy for yourself to use during class. We will go over the exercises in class, and the computers will be turned off
    • Remember: No late assignments will be accepted

Do

• Study for the Final Exam on 5/25/2010

Notice

On Friday, February 26, the College was closed because of the weather.  In order to make up this day:

• Tuesday, May 18 will follow a Friday schedule.
• The semester will be extended by one day, ending on Tuesday, May 25.
• The deadline for submission of final grades will be extended to Friday, May 28.

Do

• Study for the Final Exam on 5/25/2010

In Class

• Make sure to complete all previous labs before class starts.
• We have a lot to cover on this last instructional day. Not just Lab 04.
• Lab 04 (3 LANs, 4 Routers, OSPF, Serial)
  • Instructions, Network Diagram, Routing Tables, Router IPs, Router Configs (show run)
• GNS3 - Graphical Network Simulator

Read

• Geek Guides by SolarWinds

Do

• Study for the Final Exam on 5/25/2010

In Class

• Final Exam: Covering, but not limited to the following:
  • Chapter 21: Network Layer: Address Mapping, Error Reporting, and Multicasting
    • ICMP (Internet Control Message Protocol) [p. 621]
      • error-reporting messages
      • query messages
    • IGMP (Internet Group Management Protocol) [p. 630]
  • Chapter 22: Network Layer: Delivery, Forwarding, and Routing
  • Chapter 23: Transport Layer: Process-to-Process Delivery: UDP, TCP, and SCTP
  • Chapter 25: Domain Name System
  • All keywords from each chapter
  • Status/Troubleshooting Commands for hosts/Windows PC's
    • ipconfig, arp, ping, tracert, etc.
  • Routing Protocols
    • Interior Gateway Protocol (IGP) vs Exterior Gateway Protocol (EGP)
    • Border Gateway Protocol (BGP)
    • RIP vs IGRP vs EIGRP (Enhanced Interior Gateway Routing Protocol)
    • EIGRP vs OSPF
    • What are autonomous systems?
    • Convergence
  • All layers of the OSI Reference Model
    • Layer numbers and names
    • Functions of each layer
    • Devices that operate on layers 1, 2, and 3
  • DHCP Handshake: (D.O.R.A.)
  • Transition from IPv4 to IPv6
    • The three strategies for the transition from IPv4 to IPv6, and their definitions
    • Advantages of IPv6 over IPv4
  • Delivery of a Packet
    • Direct delivery
    • Indirect delivery
  • Techniques to make the size of the routing table manageable
    • Next-Hop Method vs. Route Method
    • Network-Specific Method vs. Host-Specific Method
    • Default Method
• As usual, the exam will be administered via Blackboard
• Note: The content of previous exams and quizzes will be unavailable after 7:0PM on 5/25/2010.

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