Planning A Microsoft Windows Server 2003 Network Chapter 05

Planning A Microsoft Windows Server 2003 Network Chapter 05...

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Unformatted text preview: 70-293: MCSE Guide to Planning a Microsoft Windows Server 2003 NetworkChapter 5: Planning, Configuring, And Troubleshooting DHCP70-293: MCSE Guide to Planning a Microsoft W2Objectives•Understand the DHCP lease and renewal process•Plan DHCP for small or large networks•Install DHCP•Authorize a DHCP server•Configure a DHCP server with scopes, superscopes, and more•Manage and monitor a DHCP server•Troubleshoot DHCP70-293: MCSE Guide to Planning a Microsoft W3The DHCP Process•On a network DHCP delivers IP addressing information automatically:•To client computers•Servers and other devices such as printers•Using DHCP reduces the amount of time spent configuring individual computers on the network70-293: MCSE Guide to Planning a Microsoft W4Leasing an IP Address•A client computer that is configured to use DHCP must obtain a lease for an IP address •The process to lease an address is composed of four packets:•DHCPDISCOVER•DHCPOFFER•DHCPREQUEST•DHCPACK70-293: MCSE Guide to Planning a Microsoft W5Leasing an IP Address (continued)70-293: MCSE Guide to Planning a Microsoft W6Renewing An IP Address•An IP address is permanent or timed•A permanent address is never reused for another client •A timed lease allows clients to use an IP address for a specified period of time•A client can initiate the release of an IP address before the lease time has expired by using the command ipconfig/release 70-293: MCSE Guide to Planning a Microsoft W7Renewing An IP Address (continued)70-293: MCSE Guide to Planning a Microsoft W8Planning DHCP•When planning how to implement DHCP, you must first consider whether it is a small or large network•A small network with a single subnet:•Uses only hubs and switches (no router)•Uses a single DHCP server to service all clients without any special configuration70-293: MCSE Guide to Planning a Microsoft W9When You Have a Large Network•Large networks with more than one subnet use routers to move packets between the subnets•DHCP relays or multiple DHCP servers must be configured•Having several DHCP servers makes management very complex because each server is managed separately70-293: MCSE Guide to Planning a Microsoft W10When You Have a Large Network (continued)70-293: MCSE Guide to Planning a Microsoft W11DHCP Relay•A DHCP relay allows DHCP communication across routers•Using DHCP relays can drastically simplify the implementation of DHCP because it reduces or eliminates the need for multiple DHCP servers•DHCP relay receives broadcast DHCP packets from clients and forwards them as unicast packets to a DHCP server•DHCP relay must be configured with the IP address of the DHCP server to deliver the unicast packets70-293: MCSE Guide to Planning a Microsoft W12DHCP Relay (continued)70-293: MCSE Guide to Planning a Microsoft W13Fault Tolerance•A fault-tolerant DHCP system can be designed using multiple DHCP servers, if no two servers hand out the same range of addresses at the same time...
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Planning A Microsoft Windows Server 2003 Network Chapter 05...

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