•Instructor Materials Chapter 8: DHCP CCNA Routing and Switching Routing and Switching Essentials v6.0 Cisco Networking Academy Program Routing and switching Essentials v6.0 Chapter 8: DHCP ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §This PowerPoint deck is divided in two parts: §Instructor Planning Guide •Information to help you become familiar with the chapter •Teaching aids §Instructor Class Presentation •Optional slides that you can use in the classroom •Begins on slide # 12 §Note: Remove the Planning Guide from this presentation before sharing with anyone. Instructor Materials – Chapter 8 Planning Guide ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Chapter 8: DHCP Routing and Switching Essentials v6.0 Planning Guide Cisco Networking Academy Program Routing and Switching Essentials v6.0 Chapter 8: DHCP ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential •What activities are associated with this chapter? • • • Chapter 8: Activities Page # Activity Type Activity Name Optional? 8.1.1.5 Interactive Activity Identify the Steps in DHCPv4 Operation Recommended 8.1.2.1 Syntax Checker Configuring a DCHPv4 Server Recommended 8.1.2.3 Syntax Checker Configure DCHPv4 Relay Recommended 8.1.2.4 Lab Configuring Basic DHCPv4 on a Router Recommended 8.1.2.5 Lab Configuring Basic DHCPv4 on a Switch Optional 8.1.3.1 Syntax Checker Configuring a Router as DHCP Client Recommended 8.1.3.3 Packet Tracer Configuring DHCPv4 Using Cisco IOS Recommended 8.1.4.4 Lab Troubleshooting DCHPv4 Optional 8.2.1.8 Interactive Activity Identify the Steps in DHCPv6 Operation Recommended 8.2.2.3 Syntax Checker Configuring and Verifying Stateless DHCPv6 Recommended The password used in the Packet Tracer activities in this chapter is: PT_ccna5 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential •What activities are associated with this chapter? • • • Chapter 8: Activities (Cont.) Page # Activity Type Activity Name Optional? 8.2.3.3 Syntax Checker Configuring and Verifying Stateful DHCPv6 Recommended 8.2.3.4 Syntax Checker Configuring a Router as a DHCPv6 Relay Agent Recommended 8.2.3.5 Lab Configuring Stateless and Stateful DHCPv6 Recommended 8.2.4.4 Lab Troubleshooting DHCPv6 Recommended 8.3.1.1 Class Activity IoE and DHCP Optional 8.3.1.2 Packet Tracer Skills Integration Challenge Recommended The password used in the Packet Tracer activities in this chapter is: PT_ccna5 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §Students should complete Chapter 8, “Assessment” after completing Chapter 8. §Quizzes, labs, Packet Tracers and other activities can be used to informally assess student progress. Chapter 8: Assessment ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential •Prior to teaching Chapter 8, the instructor should: §Complete Chapter 8, “Assessment.” §The objectives of this chapter are: •Explain how DHCPv4 operates in a small- to medium-sized business network. •Configure a router as a DHCPv4 server. •Configure a router as a DHCPv4 client. •Troubleshoot a DHCP configuration for IPv4 in a switched network. •Explain the operation of DHCPv6. •Configure stateless DHCPv6 for a small to medium-sized business. •Configure stateful DHCPv6 for a small to medium-sized business. •Troubleshoot a DHCP configuration for IPv6 in a switched network. • § Chapter 8: Best Practices ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §8.1 §The instructor should ensure this chapter becomes as hands-on as possible. §Discuss the advantages of using DHCP in a large network. §Point out the importance of knowing the DHCP operation steps - DHCP Discover, DHCP Offer, DHCP Request, DHCP Acknowledgment ---DORA •Use activity 8.1.1.5 to reinforce student’s understanding §Demonstrate configuration of DHCP using Packet Tracer. •Use Packet Tracer to recreate the topology from 8.1.2.3. Demonstrate DHCP configuration and DHCP relay, configuring an ip helper address, using that topology. •Use the same topology to verify DHCP configuration •Inject some problems to demonstrate troubleshooting DHCP. §Recommend that students complete Labs 8.1.2.4, 8.1.2.5 and 8.1.3.3 § Chapter 8: Best Practices (Cont.) ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §8.2 §Discuss the assignment of IPv6 addresses using SLAAC and DHCPv6. §Explain SLAAC operation and Duplicate Address Detection. §Point out the 3 addressing options for an IPv6 device and how to configure (using Packet Tracer if possible): •SLAAC (Router Advertisement only) Default •Stateless DHCPv6 (Router Advertisement and DHCPv6) •Stateful DHCPv6 (DHCPv6 only) §Recreate the topology in 8.2.3.4 in Packet Tracer to demonstrate configuration, verification and troubleshooting of Stateful DHCPv6. §Recommend that students complete labs 8.2.3.5 and 8.2.4.4. § § Chapter 8: Best Practices (Cont.) ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §For additional help with teaching strategies, including lesson plans, analogies for difficult concepts, and discussion topics, visit the CCNA Community at: https://www.netacad.com/group/communities/community-home §Best practices from around the world for teaching CCNA Routing and Switching. https://www.netacad.com/group/communities/ccna §If you have lesson plans or resources that you would like to share, upload them to the CCNA Community in order to help other instructors. §Students can enroll in Introduction to Packet Tracer (self-paced) Chapter 8: Additional Help Chapter 8: DHCP CCNA Routing and Switching Routing and Switching Essentials v6.0 Cisco Networking Academy Program Routing and Switching Essentials v6.0 Chapter 8: DHCP ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §8.1 DHCPv4 •Implement DHCPv4 to operate across multiple LANs in a small to medium-sized business network. •Explain how DHCPv4 operates in a small- to medium-sized business network. •Configure a router as a DHCPv4 server. •Configure a router as a DHCPv4 client. •Troubleshoot a DHCP configuration for IPv4 in a switched network. §8.2 DHCPv6 •Implement DHCPv6 to operate across multiple LANs in a small to medium-sized business network. •Explain the operation of DHCPv6. •Configure stateless DHCPv6 for a small to medium-sized business. •Configure stateful DHCPv6 for a small to medium-sized business. •Troubleshoot a DHCP configuration for IPv6 in a switched network. Chapter 8 - Sections & Objectives Cisco Networking Academy Program Routing and Switching Essentials v6.0 Chapter 8: DHCP ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 8.1 DHCPv4 8 - DHCP 8.1 – DHCPv4 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §DHCPv4 assigns IPv4 addresses and other network configuration information dynamically. •A dedicated DHCPv4 server is scalable and relatively easy to manage. •A Cisco router can be configured to provide DHCPv4 services in a small network. DHCPv4 Operation Introducing DHCPv4 Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.1 – DHCPv4 Operation 8.1.1.1 – Introducing DHCPv4 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §Four step process for a client to obtain a lease: •1. DHCP Discover (DHCPDISCOVER) - client uses Layer 2 and Layer 3 broadcast addresses to find a DHCP server. •2. DHCP Offer (DHCPOFFER) - DHCPv4 server sends the binding DHCPOFFER message to the requesting client as a unicast. •3. DHCP Request (DHCPREQUEST) – the client sends back a broadcast DHCPREQUEST in response to the servers offer. •4. DHCP Acknowledgment (DHCPACK) – the server replies with a unicast DHCPACK message. • DHCPv4 Operation DHCPv4 Operation Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.1 – DHCPv4 Operation 8.1.1.2 – DHCPv4 Operation ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §DHCPv4 messages: •If sent from the client, use UDP source port 68 and destination port 67. •If sent from the server, use UDP source port 67 and destination port 68. § DHCPv4 Operation DHCPv4 Message Format Routing and Switching Essentials - Mozilla Firefox Format and fields of a DHCPv4 Message 8.1 – DHCPv4 8.1.1 – DHCPv4 Operation 8.1.1.3 – DHCPv4 Message Format ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Routing and Switching Essentials - Mozilla Firefox DHCPv4 Operation DHCPv4 Discover and Offer Messages Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.1 – DHCPv4 Operation 8.1.1.4 – DHCPv4 Discover and Offer Messages ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §Configuring a Cisco router as a DHCPv4 server: •Excluding IPv4 Addresses – ip dhcp excluded-address can exclude a single address or a range of addresses from being assigned. •Configuring a DHCPv4 Pool - ip dhcp pool pool-name command creates a pool with the specified name and puts the router in DHCPv4 configuration mode. •Address pool assigned using network command. •Default gateway assigned using default-router command. •Other commands are optional. • § Configuring a Basic DHCPv4 Server Configuring a Basic DHCPv4 Server Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.2 – Configuring a Basic DHCPv4 Server 8.1.2.1 – Configuring a Basic DHCPv4 Server ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §Verify DHCPv4 configuration using the show running-config |section dhcp command. §Verify the operation of DHCPv4 using the show ip dhcp binding command. § Verify that messages are being received or sent by the router using the show ip dhcp server statistics command. • § § Configuring a Basic DHCPv4 Server Verifying DHCPv4 Routing and Switching Essentials - Mozilla Firefox Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.2 – Configuring a Basic DHCPv4 Server 8.1.2.2 – Verifying DHCPv4 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §DHCPDISCOVER messages are sent as broadcast messages. §Routers do not forward broadcasts. §A Cisco IOS helper address is configured so that the router acts as a relay agent forwarding the message to the DHCPv4 server. § § § Configuring a Basic DHCPv4 Server DHCPv4 Relay Routing and Switching Essentials - Mozilla Firefox Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.2 – Configuring a Basic DHCPv4 Server 8.1.2.3 – DHCPv4 Relay ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Configuring a Basic DHCPv4 Server Lab - Configuring Basic DHCPv4 on a Router 8.1.2.4 Lab - Configuring Basic DHCPv4 on a Router.pdf - Mozilla Firefox 8.1 – DHCPv4 8.1.2 – Configuring a Basic DHCPv4 Server 8.1.2.4 – Lab - Configuring Basic DHCPv4 on a Router ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Configuring a Basic DHCPv4 Server Lab - Configuring Basic DHCPv4 on a Switch 8.1.2.5 Lab - Configuring Basic DHCPv4 on a Switch.pdf - Mozilla Firefox 8.1 – DHCPv4 8.1.2 – Configuring a Basic DHCPv4 Server 8.1.2.5 – Lab - Configuring Basic DHCPv4 on a Switch ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §Small office/home office (SOHO) and branch sites often have to be configured as DHCPv4 clients. §Use the ip address dhcp interface configuration mode command. § § Configuring DHCPv4 Client Configuring a Router as DHCPv4 Client Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.3 – Configure DHCPv4 Client 8.1.3.1 – Configuring a Router as DHCPv4 Client ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §Wireless routers are set to receive IPv4 addressing information automatically from the ISP. § Configuring DHCPv4 Client Configuring a Wireless Router as a DHCPv4 Client Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.3 – Configure DHCPv4 Client 8.1.3.2 – Configuring a Wireless Router as a DHCPv4 Client ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Configuring DHCPv4 Client Packet Tracer - Configuring DHCPv4 Using Cisco IOS 8.1.3.3 Packet Tracer - Configuring DHCPv4 Using Cisco IOS Instructions.pdf - Mozilla Firefox 8.1 – DHCPv4 8.1.3 – Configure DHCPv4 Client 8.1.3.3 – Packet Tracer - Configuring DHCPv4 Using Cisco IOS ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Troubleshoot DHCPv4 Troubleshooting Tasks Routing and Switching Essentials - Mozilla Firefox Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.4 – Troubleshoot DHCPv4 8.1.4.1 – Troubleshooting Tasks ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §Verify DHCPv4 Relay - use show running-config command to verify that the ip helper address is configured. §Verify DHCPv4 configuration - use the show running-config | include no service dhcp command to verify dhcp is enabled because there is no match for the no service dhcp. Troubleshoot DHCPv4 Verify Router DHCPv4 Configuration Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.4 – Troubleshoot DHCPv4 8.1.4.2 – Verify Router DHCPv4 Configuration ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential §The extended ACL is used with the debug ip packet command to display only DHCPv4 messages. §Another troubleshooting command is the debug ip dhcp server events. Troubleshoot DHCPv4 Debugging DHCPv4 Routing and Switching Essentials - Mozilla Firefox 8.1 – DHCPv4 8.1.4 – Troubleshoot DHCPv4 8.1.4.3 – Debugging DHCPv4 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Troubleshoot DHCPv4 Lab - Troubleshooting DHCPv4 8.1.4.4 Lab - Troubleshooting DHCPv4.pdf - Mozilla Firefox 8.1 – DHCPv4 8.1.4 – Troubleshoot DHCPv4 8.1.4.4 – Lab - Troubleshooting DHCPv4 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 8.2 DHCPv6 8 - DHCP 8.2 – DHCPv6 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential SLAAC and DHCPv6 Stateless Address Autoconfiguration (SLAAC) §Two methods to dynamically assign IPv6 global unicast addresses: •Stateless Address Autoconfiguration (SLAAC). •Dynamic Host Configuration Protocol for IPv6 (Stateful DHCPv6). §SLAAC uses ICMPv6 Router Solicitation and Router Advertisement messages to provide addressing and other configuration information. Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.1– SLAAC and DHCPv6 8.2.1.1 – Stateless Address Autoconfiguration (SLAAC) ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential SLAAC and DHCPv6 SLAAC Operation §The router must have IPv6 routing enabled– ipv6 unicast-routing §PC1 sends an RS message to the all-routers multicast address that it needs an RA. §R1 responds with an RA message that has the prefix and prefix length of the network. §PC1 uses this information to create its IPv6 global unicast address. It creates its interface id using EUI-64 or randomly generates it. §PC1 must verify that the address is unique by sending an ICMPv6 Neighbor Solicitation message. Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.1– SLAAC and DHCPv6 8.2.1.2 – SLAAC Operation ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential SLAAC and DHCPv6 SLAAC and DHCPv6 §Different combinations of the Managed Address Configuration flag (M flag) and the Other Configuration flag (O flag) in the RA determine how the IPv6 address is assigned: •SLAAC (Router Advertisement only) •Stateless DHCPv6 (Router Advertisement and DHCPv6) •Stateful DHCPv6 (DHCPv6 only) § Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.1– SLAAC and DHCPv6 8.2.1.3 – SLAAC and DHCPv6 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential SLAAC and DHCPv6 SLAAC Option §SLAAC is the default on Cisco routers. Both the M flag and the O flag are set to 0 in the RA. §This option instructs the client to use the information in the RA message only. § Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.1– SLAAC and DHCPv6 8.2.1.4 – SLAAC Option ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential SLAAC and DHCPv6 Stateless DHCPv6 Option §DHCPv6 is defined in RFC 3315. §Stateless DHCPv6 option - client uses the RA message for addressing, additional parameters are obtained from DHCPv6 server. §O flag is set to 1 and the M flag is left at the default setting of 0. Use command ipv6 nd other-config-flag. Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.1– SLAAC and DHCPv6 8.2.1.5 – Stateless DHCPv6 Option ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential SLAAC and DHCPv6 Stateful DHCPv6 Option §RA message informs the client not to use the information in the RA message. §All addressing and configuration information must be obtained from a stateful DHCPv6 server. §M flag is set to 1. Use the command ipv6 nd managed-config-flag. § Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.1– SLAAC and DHCPv6 8.2.1.6 – Stateful DHCPv6 Option ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential SLAAC and DHCPv6 DHCPv6 Operations §DHCPv6 messages from server to client use UDP port 546. Client to server use UDP port 547. §Client sends a DHCPv6 SOLICIT message using FF02::1:2. §DHCPv6 server responds with a DHCPv6 ADVERTISE unicast message. §Stateless DHCPv6 client - Generates its own address. Sends a DHCPv6 INFORMATION-REQUEST to the DHCPv6 server requesting only configuration parameters. §Stateful DHCPv6 client - Sends a DHCPv6 REQUEST message to server for an IPv6 address and all other configuration parameters. Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.1– SLAAC and DHCPv6 8.2.1.7 – DHCPv6 Operations ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Stateless DHCPv6 Configuring a Router as a Stateless DHCPv6 Server §Step 1 – Enable IPv6 routing. ipv6 unicast-routing §Step 2 – Configure a DHCPv6 pool. ipv6 dhcp pool pool-name §Step 3 – Configure pool parameters. dns-server server-address §Step 4 – Configure the DHCPv6 interface ipv6 dhcp server pool-name Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.2– Stateless DHCPv6 8.2.2.1 – Configuring a Router as a Stateless DHCPv6 Server ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Stateless DHCPv6 Configuring a Router as a Stateless DHCPv6 Client §Step 1 – IPv6 enabled on interface ipv6 enable §Step 2 – enable automatic configuration of IPv6 addressing ipv6 address autoconfig Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.2– Stateless DHCPv6 8.2.2.2 – Configuring a Router as a Stateless DHCPv6 Client ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Stateless DHCPv6 Verifying Stateless DHCPv6 §Commands to verify Stateless DHCPv6: •show ipv6 dhcp pool •show running-config •show ipv6 interface •debug ipv6 dhcp detail Routing and Switching Essentials - Mozilla Firefox Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.2– Stateless DHCPv6 8.2.2.3 – Verifying Stateless DHCPv6 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Stateful DHCPv6 Server Configuring a Router as a Stateful DHCPv6 Server §Step 1 – Enable IPv6 Routing. •ipv6 unicast routing §Step 2 – Configure a DHCPv6 pool. •ipv6 dhcp pool pool-name §Step 3 – Configure pool parameters: •address prefix prefix/length •dns-server dns-server-address •domain-name domain-name §Step 4 - Configure DHCPv6 interface: •ipv6 dhcp server pool-name •ipv6 nd managed-config-flag Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.3– Stateful DHCPv6 Server 8.2.3.1 – Configuring a Router as a Stateful DHCPv6 Server ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Stateful DHCPv6 Server Configuring a Router as a Stateful DHCPv6 Client §Step 1 – Allow the router to send RS messages and participate in DHCPv6. •ipv6 enable §Step 2 – Make the router a DHCPv6 client. •ipv6 address dhcp Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.3– Stateful DHCPv6 Server 8.2.3.2 – Configuring a Router as a Stateful DHCPv6 Client ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Stateful DHCPv6 Server Verifying Stateful DHCPv6 §Use the following commands to verify Stateful DHCPv6: •show ipv6 dhcp pool •show ipv6 dhcp binding •show ipv6 interface Routing and Switching Essentials - Mozilla Firefox Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.3– Stateful DHCPv6 Server 8.2.3.3 – Verifying Stateful DHCPv6 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Stateful DHCPv6 Server Configuring a Router as a DHCPv6 Relay Agent §If the DHCPv6 server is located on a different network than the client, the router can be configured as a DHCPv6 relay agent. •ipv6 dhcp relay destination destination-address Routing and Switching Essentials - Mozilla Firefox Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.3– Stateful DHCPv6 Server 8.2.3.4 – Configuring a Router as a DHCPv6 Relay Agent ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Stateful DHCPv6 Server Lab - Configuring Stateless and Stateful DHCPv6 8.2.3.5 Lab - Configuring Stateless and Stateful DHCPv6.pdf - Mozilla Firefox 8.2 – DHCPv6 8.2.3– Stateful DHCPv6 Server 8.2.3.5 – Lab - Configuring Stateless and Stateful DHCPv6 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Troubleshoot DHCPv6 Troubleshooting Tasks Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.4– Troubleshoot DHCPv6 8.2.4.1 – Troubleshooting Tasks ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Troubleshoot DHCPv6 Verify Router DHCPv6 Configuration §Use the show ipv6 interface command to verify DHCPv6 configuration. Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.4– Troubleshoot DHCPv6 8.2.4.2 – Verify Router DHCPv6 Configuration ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Troubleshoot DHCPv6 Debugging DHCPv6 §To verify the receipt and transmission of DHCPv6 messages: •debug ipv6 dhcp detail Routing and Switching Essentials - Mozilla Firefox 8.2 – DHCPv6 8.2.4– Troubleshoot DHCPv6 8.2.4.3 – Debugging DHCPv6 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Troubleshoot DHCPv6 Lab - Troubleshooting DHCPv6 8.2.4.4 Lab - Troubleshooting DHCPv6.pdf - Mozilla Firefox 8.2 – DHCPv6 8.2.4– Troubleshoot DHCPv6 8.2.4.4 – Lab - Troubleshooting DHCPv6 ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 8.3 Chapter Summary 8 - DHCP 8.3 – Chapter Summary ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Conclusion Packet Tracer - Skills Integration Challenge 8.3.1.2 Packet Tracer - Skills Integration Challenge Instructions.pdf - Mozilla Firefox 8.3 – Summary 8.3.1 – Conclusion 8.3.1.1 – Packet Tracer - Skills Integration Challenge ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential § §Implement DHCPv4 to operate across multiple LANs in a small to medium-sized business network. §Implement DHCPv6 to operate across multiple LANs in a small to medium-sized business network. § Conclusion Chapter 8: DHCP 8.3 – Summary 8.3.1 – Conclusion 8.3.1.3 – Chapter 8: DHCP ‹#› © 2016 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Chapter 8 New Terms and Commands •Dynamic Host Configuration Protocol (DHCP) •DHCPv4 •DHCPv6 •lease •DHCPDISCOVER message •DHCPOFFER message •DHCPREQUEST message •DHCPACK message •DHCP Options •client IPv4 address (CIADDR) •default gateway address (GIADDR) •Cisco IOS helper address •DHCPv4 relay agent •Stateless Address Autoconfiguration (SLAAC) •stateless DHCPv6 server •stateful DHCPv6 server •Internet Control Message Protocol version 6 (ICMPv6) •Router Solicitation (RS) message •Router Advertisement (RA) message •Interface ID (IID) •EUI-64 •Neighbor Solicitation (NS) message •solicited-node multicast address •Neighbor Advertisement (NA) message •Duplicate Address Detection (DAD) •Managed Address Configuration flag (M flag) •Other Configuration flag (O flag) •stateful DHCPv6 •DHCPv6 SOLICIT message •DHCPv6 ADVERTISE unicast message •DHCPv6 REQUEST message •DHCPv6 INFORMATION-REQUEST message • Stateless DHCPv6 client Stateful DHCPv6 client DHCPv6 REPLY unicast message •Dynamic Host Configuration Protocol (DHCP) •DHCPv4 •DHCPv6 •lease •DHCPDISCOVER message •DHCPOFFER message •DHCPREQUEST message •DHCPACK message •DHCP Options •client IPv4 address (CIADDR) •default gateway address (GIADDR) •Cisco IOS helper address •DHCPv4 relay agent •Stateless Address Autoconfiguration (SLAAC) •stateless DHCPv6 server •stateful DHCPv6 server •Internet Control Message Protocol version 6 (ICMPv6) •Router Solicitation (RS) message •Router Advertisement (RA) message •Interface ID (IID) •EUI-64 •Neighbor Solicitation (NS) message •solicited-node multicast address •Neighbor Advertisement (NA) message •Duplicate Address Detection (DAD) •Managed Address Configuration flag (M flag) •Other Configuration flag (O flag) •stateful DHCPv6 •DHCPv6 SOLICIT message •DHCPv6 ADVERTISE unicast message •DHCPv6 REQUEST message •DHCPv6 INFORMATION-REQUEST message •Stateless DHCPv6 client •Stateful DHCPv6 client •DHCPv6 REPLY unicast message atelesunicast message New Terms and Commands