1. Chapter 5e

2.  Upon completion of this chapter, you should be able to:  Find IP configuration settings on Windows & Linux  Troubleshoot IP configuration problems  Use the ipconfig command prompt command  Tell if a host is using APIPA  Identify the difference between netstat and nbtstat  Use the tracert command to find problesm in routing

3. 5.8.1

7.  Host A is connected to the LAN, but it can’t get access to the Internet. What’s the problem?

10.  Common situations:  Install a server OS on virtual machine for testing & you accidently activate DHCP  Mobile hotspot enabled on phone & DHCP server is enabled on it  Some hosts may get an IP from the rouge DHCP server & not be able to communicate

11. 5.8.2

13.  Ipconfig  IP address, SM DG  Ipconfig /all  Lots more

15.  Ipconfig /release  Let’s go of a DHCP assigned address  Ipconfig /renew  Gets a new IP address from DHCP

17. 5.8.3

18.  Works pretty much like ipconfig but on Linux  As a standard user, you can view IP info  As a super user, you can modify the IP info  Review TestOut 5.8.3

19.  TestOut Lab 5.8.5- Explore IP Configuration  TestOut Lab 5.8.6- Troubleshoot IP Configuration Problems 1  TestOut Lab 5.8.7- Troubleshoot IP Configuration Problems 2  TestOut Lab 5.8.8- Troubleshoot IP Configuration Problems 3  TestOut Lab 5.8.9- Troubleshoot IP Configuration Problems 4  TestOut 5.8.10- Practice Questions (5)

20. 5.9

21.  Tests connectivity  Can’t get to a website? Try and ping it. Success= site is up/DNS problem Fail= other problem/site down  Echo request/echo reply  Try ping destination first, then close to far

22.  Shows the path the packet takes  Can identify exactly where problem is  Windows- tracert www.cisco.com  Linux- traceroute www.cisco.com  Measures hops (going through a router)  Any * timed out * may mean the router ignores the ICMP traceroute traffic Example Next Slide

24.  Views ARP table (IP-MAC)

25.  Displays detailed info about how your computer is communicating with other computers or network devices  Info/statistics about the network interfaces, active connections, ports, etc.  Netstat, netstat –a

26.  5.9.1- Network Communication Troubleshooting  5.9.2- Using Ping & Tracert  5.9.4/5.9.5- Using arp, netstat  5.9.6- LAB  5.9.7- Practice Questions

27. 5.10

28.  5.10.1- Name Resolution Troubleshooting  5.10.2- Fact Sheet (Review)  5.10.3- Using nslookup  5.10.4- LAB  5.10.5- Practice Questions

29. Chapter 5e