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70291: MCSE Guide to Managing a Microsoft Windows Server 2003 Network, Enhanced Chapter 5: Managing

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70-291: MCSE Guide to Managing a Microsoft Windows Server 2003 Network, Enhanced ... Use Notepad to view the log. Guide to MCSE 70-291, Enhanced. 26. Conflict ... – PowerPoint PPT presentation

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Title: 70291: MCSE Guide to Managing a Microsoft Windows Server 2003 Network, Enhanced Chapter 5: Managing


1
70-291 MCSE Guide to Managing a Microsoft
Windows Server 2003 Network, Enhanced Chapter
5 Managing and Monitoring DHCP
2
Objectives
  • Back up and restore DHCP databases
  • Reconcile DHCP scopes
  • Use the jetpack utility to repair a DHCP database
  • View DHCP statistics
  • Enable and interpret DHCP audit logs
  • Configure conflict detection
  • Bind the DHCP service to certain network cards
  • View and interpret DHCP events in Event Viewer
  • Troubleshoot common DHCP problems

3
Backing Up and Restoring DHCP Databases
  • The DHCP Service should be reliable and have
    uncorrupted data
  • Dhcp.mdb holds addressing info assigned to
    clients
  • Dhcp.tmp is only present during maintenance
    operations
  • J50.log and J50.log are transaction logs
    indicating changes to the DHCP database
  • By default, the DHCP database is backed up every
    hour

4
Backing Up and Restoring DHCP Databases
(continued)
5
Backing Up and Restoring DHCP Databases
(continued)
6
Backing Up and Restoring DHCP Databases
(continued)
7
Backing Up and Restoring DHCP Databases
(continued)
8
Activity 5-1 Installing and Authorizing DHCP
  • Objective Install and authorize DHCP on Windows
    Server 2003
  • Use the Add/Remove Windows Components utility
  • Authorize the server using the DHCP snap-in

9
Activity 5-2 Backing up a DHCP Database
  • Objective Back up a DHCP database
  • Use the DHCP snap-in
  • Select the backup option

10
Activity 5-3 Changing the Default Location of
the DHCP Database
  • Objective Change the default directory used to
    store the DHCP database
  • Use the DHCP snap-in to change the default
    directory

11
Activity 5-4 Restoring a DHCP Database
  • Objective Restore DHCP database information from
    a backup location
  • Restore from a previously created backup database
  • Issue the restore command from the DHCP snap-in

12
Maintaining the DHCP Database
  • Over time, the DHCP database will grow in size
  • The DHCP database may contain inconsistencies
  • The database may need to be fixed by reconciling
    a scope or repairing the DHCP database itself

13
Reconciling Scopes
  • The DHCP database holds summary and detailed
    versions of the IP address lease information
  • Reconcile if there is a discrepancy between two
    versions of information
  • Reconcile if information about leased addresses
    is not appearing properly
  • Reconcile to properly show leased addresses after
    restoring the DHCP database

14
Reconciling Scopes (continued)
15
Activity 5-5 Reconciling a Scope
  • Objective Reconcile a DHCP scope
  • Use the DHCP snap-in to issue a reconcile command

16
Repairing the DHCP Database
  • As the DHCP database grows, the potential for
    corruption increases
  • The DHCP Service creates entries in the Event Log
    if inconsistencies are found
  • Repair a corrupted DHCP database by using the
    jetpack command-line utility

17
Activity 5-6 Running the Jetpack Utility
  • Objective Repair a corrupted DHCP database
  • Use the jetpack utility to repair the database

18
Viewing DHCP Statistics
  • Windows Server 2003 DHCP Service automatically
    tracks statistics
  • Statistics are viewable as a whole or by scope
  • The Performance snap-in may be used to monitor
    DHCP statistics

19
Viewing DHCP Statistics (continued)
20
Viewing DHCP Statistics (continued)
21
DHCP Audit Logging
  • DHCP audit logs keep detailed information about
    DHCP server activity
  • The logs are used to troubleshoot a DHCP server
  • They are stored in the C\WINDOWS\system32\dhcp
    directory
  • Each line contains an event ID that states the
    nature of the event

22
DHCP Audit Logging (continued)
23
DHCP Audit Logging (continued)
24
DHCP Audit Logging (continued)
25
Activity 5-7 Viewing an Audit Log
  • Objective View sample events in an audit log
  • Use Notepad to view the log

26
Conflict Detection
  • Using DHCP does not prevent static IP
    configuration
  • A DHCP server may hand out an IP address that was
    already statically assigned
  • Conflict detection prevents a DHCP server from
    creating IP address conflicts
  • A DHCP server pings an IP address before it is
    leased to a client computer

27
Conflict Detection (continued)
28
Activity 5-8 Configuring Conflict Detection
  • Objective Conflict detection on a DHCP server
  • Use the DHCP snap-in to set the number of
    conflict detection attempts to two

29
Configuring DHCP Bindings
  • You can choose which network card the DHCP
    Service is bound to
  • The server only hands out IP addresses through a
    network card that has the DHCP Service bound

30
Configuring DHCP Bindings (continued)
31
Activity 5-9 Setting Bindings for DHCP
  • Objective Bind the DHCP Service to one NIC only
  • Ensure that the DHCP server is bound to only your
    local area connection
  • Use the DHCP snap-in

32
Viewing DHCP Events in Event Viewer
  • Summary information generated by the DHCP Service
    is placed in the system event log

33
Viewing DHCP Events in Event Viewer (continued)
34
Activity 5-10 Viewing DHCP Events in Event
Viewer
  • Objective See the events placed into the system
    log by the DHCP Service
  • Use Event View under Administrative Tools

35
DHCP Troubleshooting
  • DHCP is a simple broadcast-based protocol that
    seldom has problems
  • Problems include
  • All computers are unable to lease addresses
  • A single computer is unable to lease an address
  • Some computers have incorrect address information
  • A single computer has incorrect address
    information

36
DHCP Troubleshooting (continued)
  • Problems
  • A rogue DHCP server is leasing addresses
  • Multiple DHCP servers are causing conflicts
  • The DHCP server hands out addresses already used
    by hosts with static IP addresses
  • A client is using an Automatic Private IP
    Addressing (APIPA) address

37
Activity 5-11 Remove DHCP
  • Objective Remove the DHCP Server service from
    your server
  • Remove the server using the Add/Remove Windows
    Components utility

38
Summary
  • The DHCP database normally resides in the
    C\WINDOWS\system32\dhcp folder (can change)
  • Reconciling scopes will synchronize scope
    information in the DHCP database
  • The jetpack command-line utility may be used to
    repair a corrupted DHCP database
  • You may view DHCP statistics in the DHCP snap-in
    or via the Performance snap-in

39
Summary (continued)
  • Audit logging enables you to view detailed
    information about the operation of the DHCP
    Service
  • Conflict detection sends a ping packet before
    leasing an IP address to ensure that it is not in
    use
  • You can configure the DHCP service binding to
    respond to DHCP clients on certain network cards
    only
  • Troubleshooting DHCP problems is a valuable skill
    when implementing Windows Server 2003
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