Windows Server 2003DHCP 安装设定和管理维护

IP Addresses Available for Lease to Client Computers
Selecting DHCP Options
DHCP option
Description
Routers
A preferred list of IP addresses for routers on the same subnet as the DHCP clients
Client has IP address 192.168.1.34
IP address 192.168.1.34 is available
Create an active lease entry
What Are DHCP Statistics?
DHCP Server
DHCP statistics represent statistics collected at either the server level or scope level since the DHCP service was last started
Enhancing DHCP Availability with Distributed Scopes
Scope for 192.168.1.X/24 defined in both DHCP Servers
Active Addresses Excluded Addresses
Excluded Addresses DHCP Server
DHCP Server
Automatic Private IP Addressing
Computer Running Windows XP / 2019
Request for IP Address
APIPA Generates IP Address
169.254.X.X
DHCP Server (Offline)
DHCPACK
Source IP Address = 192.168.0.108 Dest. IP Address = 192.168.0.77 Offered IP Address = 192.168.0.77 Client Hardware Address = 08004... Subnet Mask = 255.255.255.0 Length of Lease = 8 days Server Identifier = 192.168.0.108 DHCP Option: Router = 192.168.0.1
WINS node type
A preferred NetBIOS name resolution method for the DHCP client to use
WINS server
IP addresses of primary and secondary WINS servers for the DHCP client to use
DHCP Client
Broadcast
Non RFC Compliant
Router
RFC-1542 Compliant
Router
Broadcast
DHCP Relay Agent
Windows 2019 Server
Broadcast DHCP Server
Broadcast DHCP Client
DHCP Server
Configuration A Configuration B
Client1 Client2 Client3
Configuration C
Relative IPCONFIG Options
• IPCONFIG /all
Display full configuration information
• IPCONFIG /renew
Renew the IP address for the specified adapter
• IPCONFIG /release
Release the IP address for the specified adapter
Configuring a Superscope
• Windows Server 2019 stores the DHCP database in the directory %Systemroot%\System32\Dhcp
• The DHCP database files include:
DHCP.mdb Tmp.edb J50.log and J50*.log
DHCP Server
SuperscopeA
2 192.168.2.1
192.168.1.254 192.168.2.254
192.168.1.1 192.168.1.254 192.168.2.1 192.168.2.254
Configuring a Multicast Scope
What Is a DHCP Audit Log File?
A DHCP audit log is a log of service-related events, such as when: the service starts and stops; authorizations have been verified; or IP addresses are leased, renewed, released, or denied
Active Addresses DHCP Server
What Is a DHCP Database?
• The DHCP database contains DHCP configuration data, such as information about scopes, reservations, options, and leases
Res*.log J50.chk
How a DHCP Database Is Reconciled
DHCP Database Registry
DHCP Server
Detailed IP address lease information
Summary IP address lease information
DHCPREQUEST
Source IP Address = 192.168.0.77 Dest. IP Address = 192.168.0.108 Requested IP Address = 192.168.0.77 Hardware Address = 08004....
DHCP Client
Reserving IP Addresses for Client Computers
New Reservation
Provide information for a reserved client.
Reservation name: Stuttgart Server
IP address:
192 . 168 . 1 . 201
The DHCP Lease Generation Process
DHCP Client
1 IP Lease Request
DHCP Servers
IP Lease Offer 2
3 IP Lease Selection
IP Lease
4
Acknowledgement
The DHCP Lease Renewal Process
Add
Close
Examining Option Classes
• Vendor-defined classes manage DHCP options that are assigned to clients that are identified by vendor type
• User-defined classes manage DHCP options that are assigned to clients with common configuration requirements
Compares information to find
inconsistencies
Reconciles inconsistencies in the DHCP database
Example
Summary information Detailed information Reconciled DHCP database
MAC address:
00a024e2b01a
Description:
DHCP Reservation for Server
Supported types Both
DHCP only
BOOTP only
A reservation is a specific IP address, within a scope, that is permanently reserved for leased use to a specific DHCP client
Lease Generation
Lease Renewal
DHCP Server
DHCP Client1: IP configuration from DHCP server
DHCP Database
IP Address1: Leased to DHCP Client1 IP Address2: Leased to DHCP Client2 IP Address3: Available to be leased
Windows Server 2019
DHCP 安裝設定與管理維護
林寶森 jefflms11.hinet
How DHCP Allocates IP Addresses
Non-DHCP Client: Static IP
configuration
DHCP Client2: IP configuration from DHCP server
Computer2
DHCP Server
Request for Multicast Address
Multicast Group
Multicast Address Assigned
Computer1
Computer3
Computer4
Routed Network Configuration Options
DNS servers
IP addresses for DNS name servers that DHCP clients use to resolve names
DNS domain
Domain name that DHCP clients should use when resolving names
DHCP Administrators
DHCP Server 1
DHCP Log DHCP Server 2
DHCP Users
Overview of Scopes
DHCP Server
Scope
192.168.1.0 192.168.1.1 192.168.1.2 192.168.1.3 192.168.1.4
No IP Address Returned
Broadcasts the IP Address
Assigns IP Address
No Response
Securing the DHCP Service
Active Directory
DHCP Server 1 DHCP Server 2
Authorized List