1. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 1 Version 4.0 Implementing IP Addressing Services Accessing the WAN – Chapter 7

2. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 2 Objectives  Configure DHCP in an enterprise branch network  Configure NAT on a Cisco router  Configure new generation RIP (RIPng) to use IPv6

3. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 3 Configure DHCP in an Enterprise Branch Network  Describe the function of DHCP in a network

4. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 4 Configure DHCP in an Enterprise Branch Network  Describe how DHCP dynamically assigns an IP address to a client

5. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 5 Configure DHCP in an Enterprise Branch Network  Describe the differences between BOOTP and DHCP

6. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 6 Configure DHCP in an Enterprise Branch Network  Describe how to configure a DHCP server

7. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 7 Configure DHCP in an Enterprise Branch Network  Describe how to configure a Cisco router as a DHCP client

8. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 8 Configure DHCP in an Enterprise Branch Network  Explain how DHCP Relay can be used to configure a router to relay DHCP messages when the server and the client are not on the same segment

9. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 9 Configure DHCP in an Enterprise Branch Network  Describe how to configure a Cisco router as a DHCP client using SDM

10. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 10 Configure DHCP in an Enterprise Branch Network  Describe how to troubleshoot a DHCP configuration

11. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 11 Configure NAT on a Cisco Router  Describe the operation and benefits of using private and public IP addressing

12. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 12 Configure NAT on a Cisco Router  Explain the key features of NAT and NAT overload

13. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 13 Configure NAT on a Cisco Router  Explain the advantages and disadvantages of NAT

14. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 14 Configure NAT on a Cisco Router  Describe how to configure static NAT to conserve IP address space in a network

15. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 15 Configure NAT on a Cisco Router  Describe how to configure dynamic NAT to conserve IP address space in a network

16. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 16 Configure NAT on a Cisco Router  Describe how to configure NAT Overload to conserve IP address space in a network

17. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 17 Configure NAT on a Cisco Router  Describe how to configure port forwarding

18. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 18 Configure NAT on a Cisco Router  Describe how to verify and troubleshoot NAT and NAT overload configurations

19. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 19 Configure New Generation RIP (RIPng) to use IPv6  Explain the need for IPv6 to provide a long-term solution to the depletion problem of IP address

20. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 20 Configure New Generation RIP (RIPng) to use IPv6  Describe the format of the IPv6 addresses and the appropriate methods for abbreviating them

21. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 21 Configure New Generation RIP (RIPng) to use IPv6  Explain the various methods of assigning IPv6 addresses to a device

22. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 22 Configure New Generation RIP (RIPng) to use IPv6  Describe the transition strategies for implementing IPv6

23. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 23 Configure New Generation RIP (RIPng) to use IPv6  Describe how Cisco IOS dual stack enables IPv6 to run concurrently with IPv4 in a network

24. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 24 Configure New Generation RIP (RIPng) to use IPv6  Describe the concept of IPv6 tunneling

25. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 25 Configure New Generation RIP (RIPng) to use IPv6  Describe how IPv6 affects common routing protocols, and how these protocols are modified to support IPv6

26. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 26 Configure New Generation RIP (RIPng) to use IPv6  Explain how to configure a router to use IPv6

27. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 27 Configure New Generation RIP (RIPng) to use IPv6  Explain how to configure and verify RIPng for IPv6

28. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 28 Configure New Generation RIP (RIPng) to use IPv6  Explain how to verify and troubleshoot IPv6

29. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 29 Summary  Dynamic Host Control Protocol (DHCP) This is a means of assigning IP address and other configuration information automatically.  DHCP operation –3 different allocation methods Manual Automatic Dynamic –Steps to configure DHCP Define range of addresses Create DHCP pool Configure DHCP pool specifics

30. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 30 Summary  DHCP Relay Concept of using a router configured to listen for DHCP messages from DHCP clients and then forwards those messages to servers on different subnets  Troubleshooting DHCP –Most problems arise due to configuration errors –Commands to aid troubleshooting Show ip dhcp Show run debug

31. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 31 Summary  Private IP addresses –Class A = 10.x.x.x –Class B = 172.16.x.x – 172.31.x.x –Class C = 192.168.x.x  Network Address Translation (NAT) –A means of translating private IP addresses to public IP addresses –Type s of NAT Static Dynamic –Some commands used for troubleshooting Show ip nat translations Show ip nat statistics Debug ip nat

32. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 32 Summary  IPv6 –A 128 bit address that uses colons to separate entries –Normally written as 8 groups of 4 hexadecimal digits  Cisco IOS Dual Stack –A way of permitting a node to have connectivity to an IPv4 & IP v6 network simultaneously  IPv6 Tunneling –An IPV6 packet is encapsulated within another protocol

33. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 33 Summary  Configuring RIPng with IPv6 1 st globally enable IPv6 2 nd enable IPv6 on interfaces on which IPv6 is to be enabled 3 rd enable RIPng using either ipv6 rotuer rip name ipv6 router name enable

34. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 34