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

21. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 21 Configure New Generation RIP (RIPng) to use IPv6  Describe the format of the IPv6 addresses and the appropriate methods for abbreviating them

22. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 22 Configure New Generation RIP (RIPng) to use IPv6

23. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 23 Configure New Generation RIP (RIPng) to use IPv6 RFC 3587

24. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 24 Configure New Generation RIP (RIPng) to use IPv6  Explain the various methods of assigning IPv6 addresses to a device

25. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 25 Configure New Generation RIP (RIPng) to use IPv6 Atribuição de ID de interface manual Uma maneira de atribuir um endereço IPv6 estaticamente a um dispositivo é atribuir o prefixo (rede) e a porção da ID de interface (host) do endereço IPv6. Para configurar um endereço IPv6 em uma interface do roteador Cisco, use o comando ipv6 address ipv6- address/prefix-length no modo de configuração de interface. O exemplo seguinte mostra a atribuição de um endereço IPv6 à interface de um roteador Cisco: RouterX(config-if)#ipv6 address 2001:DB8:2222:7272::72/64

26. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 26 Configure New Generation RIP (RIPng) to use IPv6 Atribuição de ID de interface EUI-64 Outra maneira de atribuir um endereço IPv6 é configurar a porção do prefixo (rede) do endereço IPv6 e derivar a porção da ID de interface (host) do endereço MAC de camada 2 do dispositivo, conhecido como a ID de interface EUI-64.

27. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 27 Configure New Generation RIP (RIPng) to use IPv6  Describe the transition strategies for implementing IPv6

28. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 28 Configure New Generation RIP (RIPng) to use IPv6  Describe how Cisco IOS dual stack enables IPv6 to run concurrently with IPv4 in a network

29. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 29 Configure New Generation RIP (RIPng) to use IPv6  Describe the concept of IPv6 tunneling

30. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 30 Configure New Generation RIP (RIPng) to use IPv6  Describe how IPv6 affects common routing protocols, and how these protocols are modified to support IPv6

31. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 31 Configure New Generation RIP (RIPng) to use IPv6  Explain how to configure a router to use IPv6

32. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 32 Configure New Generation RIP (RIPng) to use IPv6  Explain how to configure and verify RIPng for IPv6

33. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 33 Configure New Generation RIP (RIPng) to use IPv6  Explain how to verify and troubleshoot IPv6

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

35. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 35 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

36. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 36 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

37. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 37 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

38. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 38 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

39. © 2006 Cisco Systems, Inc. All rights reserved.Cisco Public 39