add server serverDNS serverIP

ServerDNS

Required. Specifies the DHCP server to add. Identifies the server by DNS domain name.

ServerIP

Required. Specifies the DHCP server to add. Identifies the server by IP address.

In the following example, this command adds a server with the DNS name dhcpsrv1.example.microsoft.com and IP address 10.2.2.2 to the list of authorized servers in Active Directory®.

add server dhcpsrv1.example.microsoft.com 10.2.2.2

delete server ServerDNS ServerIP

ServerDNS

Required. Specifies the DHCP server to delete. Identifies the server by DNS domain name.

ServerIP

Required. Specifies the DHCP server to delete. Identifies the server by IP address.

In the following example, this command deletes the server with the DNS name dhcpsrv1.example.microsoft.com and IP address 10.2.2.2 from the list of authorized servers in Active Directory.

delete server dhcpsrv1.example.microsoft.com 10.2.2.2

server [{\\ServerNetBIOSName | \\ServerFQDN | ServerIP}]

{ \\ServerNetBIOSName| \\ServerFQDN| ServerIP}

Specifies the DHCP server to which you want to shift the current command-line context. Identifies the server by NetBIOS name, fully qualified domain name (FQDN), or IP address.

In the first example, this command changes the Netsh DHCP command-line context to the DHCP server with the NetBIOS name \\DHCP-SRV1.

In the second example, this command changes the Netsh DHCP command-line context to the DHCP server with IP address 10.0.0.1.

In the third example, this command changes the Netsh DHCP command-line context to the DHCP server with the FQDN \\example.microsoft.com.

server \\DHCP-SRV1

server 10.0.0.1

server \\example.microsoft.com

show server

none

add class ClassName [ClassComment] [Data] [[IsVendor=]{0 | 1}] [[IsBinary=]{B | b}]

ClassName

Required. Specifies the name of the class to create.

ClassComment

Specifies the comment to associate with the class.

Data

Specifies class data in ASCII or binary format depending on the IsBinary parameter. If unspecified, it is assumed that the format of the data is ASCII.

[ IsVendor=]{0 | 1}

Indicates whether the class to add is a user class or a vendor class: 0-User class (default), 1-Vendor class.

[ IsBinary=]{B | b}

Indicates if the class data is in binary format. If unspecified, it is assumed that the format of the data is ASCII.

In the first example, this command creates a vendor class named MyClass, with the comment TestClass, and the class data TestDataForMyClass in ASCII format.

In the second example, this command creates a user class named MyUserClass with binary data of 4345335532 (ASCII-CE3U2).

The third example is an alternate command syntax for the second example.

add class MyClass TestClass TestDataForMyClass 1

add class MyUserClass TestClass1 4345335532 B

add class MyUserClass TestClass1 4345335532 0 b

add mscope MscopeName [MscopeComment] [TTL]

MscopeName

Required. Specifies the name of the multicast scope to add.

MscopeComment

Specifies a description of the current multicast scope.

TTL

Specifies the Time-To-Live (TTL) value for the multicast scope. The valid range for this field is 1 to 255, with a default of 32.

In the following example, this command creates a multicast scope with the name My MultiCast Scope, a comment of MyTestMulticastScope, and a multicast TTL value of 40.

add mscope "My MultiCast Scope" MyTestMulticastScope 40

add optiondef OptCode OptName{BYTE | WORD | DWORD | STRING | IPADDRESS} [[IsArray=]{0 | 1}] [vendor=VendorClass] [comment=OptComment] [DefValue]

OptCode

Required. Specifies the option type to define. Identifies the option type with a unique option code. For the value of the code, choose a number between zero and 255.

OptName

Required. Specifies the name of the option type.

{BYTE | WORD | DWORD | STRING| IPADDRESS}

Required. Indicates the data type of the option.

[IsArray=]{0 | 1}

Indicates whether the data type is arrayed or non-arrayed: 0-Unary or non-arrayed (default), 1-Arrayed.

vendor= VendorClass

Specifies the vendor class for the option. If unspecified, the default vendor class, the DHCP standard options class, is used.

comment= OptComment

Specifies a comment to add to the new option type definition. If unspecified, the default value is NULL.

DefValue

Specifies a default value to use for this option type, if one is not specified otherwise.

• IsArray must be 0 for STRING type options.
  
  

In the first example, this command defines a new option type named ExtensionsPath with code 18, a STRING data type, and joins it to the DHCP standard options class, assigning it a default value of c:\Temp.

In the second and third examples, this command defines a new option type named TestOption with code 231 and an IPADDRESS data type. In the second example, the option is defined to provide only a single IP address. IsArray and DefValue are not necessary because defaults are assumed. In the third example, DefValue and IsArray are required to create an array that contains the IP address values 10.1.1.1, 10.1.1.2, and 10.1.1.3.

add optiondef 18 ExtensionsPath STRING 0 c:\Temp

add optiondef 231 TestOption IPADDRESS

add optiondef 231 TestOption IPADDRESS 1 vendor=MyVendorClass 10.1.1.1 10.1.1.2 10.1.1.3

add optiondef 231 TestOption IPV6ADDRESS 1 vendor=MyVendorClass::0A01:0101

add scope ScopeAddress SubnetMask ScopeName[ScopeComment]

ScopeAddress

Required. Specifies the scope to add. Identifies the scope by IP network number.

SubnetMask

Required. Specifies the subnet mask for the scope to add.

ScopeName

Required. Specifies an identifying name for the scope.

ScopeComment

Specifies a comment for the scope.

In the following example, this command adds a scope for the DHCP server with scope address 10.2.2.0, subnet mask 255.255.255.0, a scope name of MyScope, and a scope comment of MyComment.

add scope 10.2.2.0 255.255.255.0 MyScope MyComment

backup [Path]

[Path]

Specifies the path of the folder in which the backup .mdb DHCP database file will be created. If not specified, the path defaults to %systemroot%\System32\Dhcp\Backup.

• Note that if the default destination is chosen, the synchronous backup that the DHCP server creates every 60 minutes will overwrite the async backup.
  
  

In the following example, this command sets the path of the DHCP server database file to c:\MyBackUpFiles\DHCP.

backup "c:\MyBackUpFiles\DHCP”

delete class Name

Name

Required. Specifies the user or vendor class to delete.

In the following example, this command deletes the class named MyClass.

delete class MyClass

delete dnscredentials dhcpforceflag

none

delete mscope MscopeName

MscopeName

Required. Specifies the multicast scope to delete. MscopeName is case-sensitive.

In the following example, this command deletes the multicast scope MyMulticastScope from the currently specified DHCP server.

delete mscope MyMulticastScope

delete optiondef OptCode [[vendor=]VendorName]

OptCode

Required. Specifies the unique identifier for the option type to delete.

vendor= VendorName

Specifies the vendor class name with which the option type is associated. If unspecified, the option type definition is deleted from the non-vendor-specific DHCP standard options class.

In the following example, this command deletes an option type with code 18 from the DHCP standard options class.

delete optiondef 18

delete optionvalue OptCode[[vendor=]VendorClass] [[user=]UserClass]

OptCode

Required. Specifies the unique identifier of the global server option with a value to delete.

vendor= VendorClass

Specifies the vendor class name with which the option is associated. If the tag is not included, the global VendorName that was set by set vendorclass is assumed. If the tag is used, but no value is specified, then no vendor class is used. This parameter is available only for computers running Windows® 2000 Server.

user= UserClass

Specifies the user class name with which the option is associated. If the tag is not included, the global UserName that was set by set userclass is assumed. If the tag is used, but no value is specified, then no user class is used. This parameter is available only for computers running Windows 2000 Server.

In the following example, this command deletes the current value of the option type with code 18.

delete optionvalue 18

delete scope ScopeAddress {DHCPNOFORCE | DHCPFULLFORCE}

ScopeAddress

Required. Specifies the address of the scope to delete.

{DHCPNOFORCE | DHCPFULLFORCE}

Required. Indicates the force with which the scope will be deleted: DHCPNOFORCE-Deletes the scope if there are no active clients in the scope, DHCPFULLFORCE-Deletes the scope even if there are active clients in the scope.

In the following example, this command forces the deletion of the scope 10.2.2.0 from the DHCP server and ignores all warnings.

delete scope 10.2.2.0 dhcpfullforce

delete superscope SuperscopeName

SuperscopeName

Required. Specifies the name of the superscope to delete.

• You can set the superscope from the scope context with the set superscope command.
  
  
• The superscope name is case-sensitive.
  
  

In the following example, this command deletes the superscope named My Superscope from the specified DHCP server.

delete superscope "My Superscope"

dump

When run at the command prompt or in a batch file, output can be saved in a text file. Used without parameters, this command dumps the configuration of the local server to the command prompt window.

netsh dhcp server [IPAddress] dump >[PathAndFileName]

IPAddress

Specifies the IP address of the DHCP server for which the configuration is output.

PathAndFileName

Specifies both the location where the file is saved, and the name of the destination file to which to dump DHCP server configuration. If unspecified, the DHCP server configuration is dumped to the command prompt window.

• This command dumps the DHCP configuration as text output within the command prompt window. You can copy or redirect this output to a file to view it in a text editor. After file output is obtained, you can use the exec command to configure another DHCP server with the same configuration.
  
  
• Before you perform the dump command at the source server, reconcile all scopes and fix any reported inconsistencies.
  
  
• The following command dumps the current configuration for the local DHCP server (the source) to a text file named Dhcpcfg.dmp. This file can be copied to another (destination) DHCP server and used to recreate the source configuration on it. You can recreate the configuration by typing the following command:
  
  dump > dhcpcfg.dmp
  
  
• Before you use the exec command to produce a dump file at the destination server, complete the following steps:
  
  
  1. Close the DHCP console at the destination server. Do not reopen the console until after you have run the exec command.
     
     
  2. Delete all default option definitions and any user and vendor classes at the destination server.
     
     
• These examples demonstrate how to use the delete optiondef and del class Netsh commands to delete all default option definitions and any user and vendor classes. You can run these commands at the dhcp server> prompt, from within the netsh environment.
  
  
  • delete optiondef 76
    
    
  • del class "Default BOOTP Class"
    
    
  • del class "Microsoft Windows 98 Options"
    
    
• On the destination server, the exec command is used to load and run the saved configuration:
  
  netsh exec dhcpcfg.dmp
  
  
• After you use the exec command to load the dump file, you must reconcile all scopes. Use net stop dhcpserver to stop the DHCP Server service and net start dhcpserver to restart it. Once the service is restarted, DHCP database changes take effect.
  
  

The first command, which is run within the netsh environment, dumps the configuration of the local DHCP server to the command prompt window.

The second command, which is run at the command prompt, dumps the configuration of a DHCP server with IP address 192.168.0.1 to a text file named Dhcpcfg.dmp at the location C:\Dhcp\ on the local computer.

The third command, which is run at the command prompt, dumps the configuration of a DHCP server with IP address 192.168.0.1 to a text file named Dhcpcfg.dmp on a shared network folder named \\Backup\Dhcp\.

dump

netsh dhcp server 192.168.0.1 dump > C:\Dhcp\Dhcpcfg.dmp

netsh dhcp server 192.168.0.1 dump > \\Backup\Dhcp\Dhcpcfg.dmp

export [Path]FileName {all | ScopeList}

[Path] FileName

Required. Specifies, by name, the file where the DHCP configuration will be stored. If the path, the file name, or both contain spaces, quotation marks must be used.

{all | ScopeList}

Required. Specifies which scopes you want to export. The parameter all exports all scopes. The parameter ScopeList exports the scopes that correspond to the IP addresses you list. Each IP address in the list must be separated by spaces.

• This command works only on the local server.
  
  
• While the export command runs, the DHCP service is stopped and does not respond to DHCP clients seeking new leases or lease renewals.
  
  
• If the DHCP service has a large number of scopes or a large number of client address leases, this command can take a long time to run.
  
  

In the first example, this command exports the complete DHCP service configuration to the file c:\Temp\Dhcpdb.

In the second example, this command exports the DHCP configuration for scopes 10.0.0.0 and 192.168.0.0 to the file c:\Temp\Dhcpdb.

In the third example, this command exports the complete DHCP service configuration to the file c:\My Folder\Dhcp Configuration. Note that both the path and file name contain spaces, so quotation marks are used.

export c:\Temp\Dhcpdb all

export c:\Temp\Dhcpdb 10.0.0.0 192.168.0.0

export "c:\My Folder\Dhcp Configuration" all

import [Path]FileName {all | ScopeList]

[Path] FileName

Required. Specifies, by name, the file from which the DHCP configuration will be imported. If the path, the file name, or both contain spaces, quotation marks must be used.

{all | ScopeList}

Required. Specifies which scopes you want to import. The parameter all imports all scopes represented in the file you specify. The parameter ScopeList imports the scopes that correspond to the IP addresses you list. Each IP address in the list must be separated by spaces.

• This command works only on the local server.
  
  
• While the import command runs, the DHCP service is stopped and does not respond to DHCP clients seeking new leases or lease renewals.
  
  
• If the DHCP service has a large number of scopes or a large number of client address leases, this command can take a long time to run.
  
  

In the first example, this command imports the complete DHCP service configuration from the file c:\Temp\Dhcpdb.

In the second example, this command imports the DHCP configuration for scopes 10.0.0.0 and 192.168.0.0 from the file c:\Temp\Dhcpdb

In the third example, this command imports the complete DHCP service configuration from the file c:\My Folder\Dhcp Configuration. Note that both the path and file name contain spaces, so quotation marks are used.

import c:\Temp\Dhcpdb all

import c:\Temp\Dhcpdb 10.0.0.0 192.168.0.0

import "c:\My Folder\Dhcp Configuration" all

initiate auth

none

mscope MscopeName

MscopeName

Required. Specifies the name of the multicast scope to which to switch the command context.

• This command enables you to use any of the available DHCP multicast scope-level commands on the specified DHCP multicast scope. Subsequent operations will be performed on this multicast scope at the specified server.
  
  
• The name of the multicast scope is case-sensitive.
  
  

In the following example, this command switches the command context to a multicast scope named My Multicast Scope.

mscope "My Multicast Scope"

restore [Path]

[Path]

Specifies the path of the .mdb DHCP database file to be restored. If not specified, the path will default to %systemroot%\System32\Dhcp\Backup

• An error is returned when the specified database cannot be found, or the database was created with a different language version of the server.
  
  

In the following example, this command sets the restore path of the DHCP server database file to c:\MyBackUpFiles\DHCP.

restore "c:\MyBackUpFiles\DHCP”

scope ScopeIPAddress

ScopeIPAddress

Required. Specifies the scope to which to switch the command context. Identifies the scope by network or subnet IP address.

• This command enables you to use any of the available DHCP scope-level commands on the specified DHCP scope. Subsequent operations will be performed on this scope at the specified server.
  
  

In the following example, this command switches the command context to the scope with IP address 10.0.0.0.

scope 10.0.0.0

set auditlog NewAuditPath Maxsize Minsize Interval

NewAuditPath

Optional. Specifies a local folder for the DHCP server to use when storing audit log files. If a path is not specified, the location will default to %windir%\System32\Dhcp.

Maxsize

Optional. This value is a DWORD and is written to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCPServer\Parameters\DhcpLogFileMaxSize. This attribute sets the maximum size restriction (in megabytes) for the total amount of disk space available for all audit log files created and stored by the DHCP service. The default is seven.

Minsize

Optional. This value is a DWORD and is written to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCPServer\Parameters\DhcpLogMinSpaceOnDisk. This attribute sets the minimum free space (in megabytes) available on the local disk before audit logging stops. The default is 20.

Interval

Optional. This value is a DWORD and is written to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCPServer\Parameters\DhcpLogDiskSpaceCheckInterval. This attributes sets the number of times the log is written to before checking free disk space. The default is 50.

• Only the path can be configured in the DHCP GUI. The other attributes are configured through the registry.
  
  
• In order for this change to take effect, you must stop and restart the DHCP service after you run this command.
  
  

In the following example, this command sets the DHCP server to store audit log files in the directory %windir%\System32\Dhcp with a maximum size of seven megabytes, minimum free space of 20 megabytes, and an interval of 120.

netsh dhcp> set auditlog interval 120

set bindings Interface [Enable | Disable]

Interface

Optional. Specifies the friendly name of the interface. The default is all local interfaces.

Mode

Optional. Specifies the binding mode.ENABLE - Enables interface binding (default).DISABLE - Disables the interface binding.

• Use the “Show Bindings” command to verify the value of the “Bound to Server” attribute. “TRUE” value indicates the interface binding is enabled. “FALSE” value indicates that the interface binding is disabled.
  
  

set databasebackupinterval NewInterval

NewInterval

Required. Specifies the backup interval in minutes.

In the following example, this command sets the database backup interval for the specified DHCP server to 1,440 minutes (24 hours).

set databasebackupinterval 1440

set databasebackuppath NewBackupPath

NewBackupPath

Required. Specifies a local folder for the DHCP server to use when storing audit log files. A valid folder path is required, and the folder must be local to the DHCP server where the path is defined.

In the following example, this command sets the database backup path to c:\windows\dhcp\backup.

set databasebackuppath c:\windows\dhcp\backup

set databasecleanupinterval NewInterval

NewInterval

Required. Specifies the database cleanup interval, in minutes.

In the following example, this command sets the database cleanup interval to 10,080 minutes (every seven days).

set databasecleanupinterval 10080

set databaseloggingflag [{0 | 1}]

{0 | 1}

Indicates the database logging flag setting: 0-Resets the flag (default), 1-Sets the flag.

In the following example, this command resets the database logging flag for the currently specified DHCP server.

set databaseloggingflag 0

set databasename NewFileName

NewFileName

Required. Specifies a new name for the DHCP server database file.

• In order for this change to take effect, you must stop and restart the DHCP Server service.
  
  

In the following example, this command sets the DHCP server database file name to newdatabase.mdb.

set databasename newdatabase.mdb

set databasepath NewPath

NewPath

Required. Specifies the path of the DHCP database file.

• In order for this change to take effect, you must stop and restart the DHCP Server service.
  
  

In the following example, this command sets the path of the DHCP server database file to c:\windows\dhcp.

set databasepath c:\windows\dhcp

set databaserestoreflag [{0 | 1}]

{0 | 1}

Indicates the setting of the database restore flag: 0-Resets the flag (default), 1-Sets the flag.

In the following example, this command sets the database restore flag for the currently specified DHCP server.

set databaserestoreflag 1

set detectconflictretry RetryNumber

RetryNumber

Required. Specifies the number of conflict detection attempts that the DHCP server will make before it leases a scope IP address to a client.

• The maximum value for RetryNumber is five. All values greater than five will default down to five.
  
  

In the following example, this command sets the DHCP server to make four attempts to detect if a there is a conflict for a scope IP address before the DHCP server uses this scope IP address in a new address lease.

set detectconflictretry 4

set dnsconfig [Enable=]{0 | 1} [[Update=]{0 | 1}] [[Lookup=]{0 | 1}] [[NonDyn=]{0 | 1}]

[Enable=]{0 | 1}

Required. Indicates whether to enable or disable the dynamic updates of DNS client information: 0-Disables dynamic updates of DNS client information, 1-Enables dynamic updates of DNS client information.

[Update=]{0 | 1}

Indicates the type of update lookups: 0-Updates according to client request, 1-Updates forward and reverse name lookups.

[Lookup=]{0 | 1}

Indicates whether to enable or disable forward lookups for clients when leases expire: 0-Disables forward lookups, 1-Enables forward lookups.

[NonDyn=]{0 | 1}

Indicates whether to update DNS information for clients that do not support dynamic updates: 0-Disables updates for clients that do not support dynamic updates, 1-Enables these updates.

• This command is only supported for DHCP servers running Windows 2000 Server and members of the Windows Server 2003 family.
  
  
• The configured Preferred DNS server, in the TCP/IP properties of the DHCP server, will be updated with DHCP client records when dynamic updates are enabled. If the Preferred DNS server is not available on the network, the Alternate DNS server will be updated.
  
  

In the following example, this command enables the dynamic update of DNS information by the DHCP server and configures updates to always be made for both forward and reverse lookups. This example also disables the option to perform forward lookups when leases expire and enables updates for non-dynamic clients.

set dnsconfig 1 1 0 1

set dnscredentials UserName Domain Password

UserName

Required. The user name associated with a valid domain account.

Domain

Required. The domain in which the user account is located.

Password

Required. The password for the user account.

In the first example, this command sets the DNS dynamic update credentials to the values specified.

In the second example, this command sets the value of UserName to User1 and the value of Domain to Domain1, but the password is not specified. Instead, an asterisk (*) is used. When an asterisk (*) is used in place of a valid password, the user is prompted for a password. Without the correct password for the specified UserName, the credentials cannot be changed.

set dnscredentials User1 Domain1 Password1

set dnscredentials User1 Domain1 *

set napstate option [On | Off]

set napdeffail state { fullaccess | drop | quarantine }

set optionvalue OptCode {BYTE | WORD | DWORD | STRING | IPADDRESS} [[user=]UserName] [[vendor=]VendorName] [OptionValue]

OptCode

Required. Specifies the unique identifier for the option type with the value to set.

{BYTE | WORD | DWORD | STRING | IPADDRESS}

Required. Specifies the data type for the option type with the value to set.

[user=]UserName

Sets the applicable user class name to which this command will apply. If unspecified, the default user class is assumed.

[vendor=]VendorName

Sets the applicable vendor class name to which this command will apply. If unspecified, the DHCP standard options class is assumed.

[OptionValue]

Specifies the new server default value for the option type identified by OptCode. The value must be of the associated data type.

• Vendor and user classes are supported only for DHCP servers running Windows 2000 Server.
  
  
• To modify the current defaults for an unspecified class, use either the set userclass or set vendorclass commands.
  
  

In the first example, this command sets the value of option code 003 to list two router IP addresses, 10.1.1.1 and 10.1.1.2.

In the second example, this command further qualifies the first example and sets the specified value to apply only for those scope clients that identify themselves as members of the vendor class Vendor1. In order for this example to work, this class must already be defined at the server, with the specified option type defined for its use.

set optionvalue 003 IPADDRESS 10.1.1.1 10.1.1.2

set optionvalue 003 IPADDRESS vendor=Vendor1 10.1.1.1 10.1.1.2

set server[{ServerIP | \\ServerDNS}]

{ServerIP | \\ServerDNS}

Specifies the IP address or the DNS name of the specified DHCP server.

• When this command is used, and the Netsh command-line context is changed to another server, all subsequent command operations are performed on the specified server. To perform command operations on another server, this command must be run again, with the IP address or DNS name of the new server provided as the parameter.
  
  

In the following example, this command switches the DHCP server command-line context to the server at IP address 10.1.1.1

set server 10.1.1.1

set userclass [UserClass]

UserClass

Specifies the name of the user class for the currently specified DHCP server.

• This command is available only for use with DHCP servers running Windows 2000 Server.
  
  

In the first example, this command sets the user class name to MyUserClass.

In the second example, this command resets the current user class to the default user class.

set userclass MyUserClass

set userclass

set vendorclass [VendorClass]

VendorClass

Specifies the name of the vendor class for the current server.

• This command is available only for use with DHCP servers running Windows 2000 Server.
  
  

In the first example, this command sets the vendor class name to MyVendorClass.

In the second example, this command resets the current vendor class to the default class, DHCP standard options.

set vendorclass MyVendorClass

set vendorclass

show all

none

 

• This command lists all current server status and configuration details, including the stored management information base (MIB) information, for the currently specified DHCP server.
  
  

show auditlog

none

 

show bindings

none

• This command displays bindings information for the current DHCP server, indicating which active network connections that are configured with static IP addresses are enabled or disabled for use in servicing DHCP clients on your network.
  
  
• The DHCP service automatically disables network connections that obtain their IP address configuration dynamically from service bindings. This happens by default.
  
  

show class

none

 

show detectconflictretry

none

 

• This command displays the current number of ping retries that are used to attempt the detection of address conflicts for the scope IP addresses that are distributed by the server.
  
  

show dnsconfig

none

 

• If DNS configuration has not been enabled or set, you can use the DNS console or the set dnsconfig command to configure these settings.
  
  

show dnscredentials

none

 

show mibinfo

none

show mscope

none

 

show napstate

show napdeffail

show optiondef [vendor=VendorName]

vendor= VendorName

Indicates which defined and available option types to display. If unspecified, the default for VendorName is the default vendor class that is currently set for the DHCP server.

• The default vendor class can be reset with the set vendorclass command.
  
  
• VendorName is applicable only for DHCP servers running Windows 2000 Server.
  
  

In the first example, this command displays all defined option types for the current vendor class.

In the second example, this command displays the defined option types that are available for use with the specified class Vendor1.

show optiondef

show optiondef vendor=Vendor1

show optionvalue[{user=UserName | vendor=VendorName}]

user= UserName

Specifies the default values that are set for the option types that are available for use with the currently set user class.

vendor= VendorName

Specifies the default values that are set for the option types that are available for use with the currently set vendor class.

• User= UserName and vendor=VendorName are only available for use with DHCP servers running Windows 2000 Server.
  
  
• If you provide values for UserName or VendorName, the respective tags (user= or vendor=) are required. If the tags are not included, the default that is assumed is the current user class, previously set with the set userclass command.
  
  

In the following example, this command displays all of the available option types that have values set at the currently specified DHCP server.

show optionvalue

show scope

none

 

show superscope

none

 

show server

none

 

show dbproperties

none

 

• This command displays the following database configuration information:
  
  
  • DatabaseName
    
    
  • DatabasePath
    
    
  • DatabaseBackupPath
    
    
  • DatabaseBackupInterval
    
    
  • DatabaseLoggingFlag
    
    
  • DatabaseRestoreFlag
    
    
  • DatabaseCleanupInterval
    
    

show serverstatus

none

 

• This is an example of the type of status information that this command displays:
  
  Server Attrib - Server Servicing Clients :TRUE

Server Attrib - Dynamic BootP Support Enabled :TRUE

Server Attrib - DHCP server Part Of DS :TRUE

Server Attrib - DHCP server Bindings Aware :TRUE

Server Attrib - Administrative Rights :TRUE
  
  

show userclass

none

 

• This is an example of the type of setting information that this command displays:
  
  Current Class Name set for the Server dhcpsrv1.example.microsoft.com is None.
  
  

show vendorclass

none

 

• This is an example of the type of setting information that this command displays:
  
  Current Vendor Name set for the Server dhcpsrv1.example.microsoft.com is None.
  
  

show version

none

 

• This is an example of the type of version information that this command displays:
  
  The version of the DHCP server 192.168.0.100 is 5.6.
  
  

add excluderange StartIP EndIP

StartIP

Required. Specifies the IP address that starts the exclusion range.

EndIP

Required. Specifies the IP address that ends the exclusion range.

In the following example, this command excludes the IP addresses in the range 10.2.2.10 to 10.2.2.20 from distribution in the scope.

add excluderange 10.2.2.10 10.2.2.20

add iprange StartIP EndIP [{DHCP | BOOTP | BOTH}] [MaxBootP]

StartIP

Required. Specifies the IP address that starts the range.

EndIP

Required. Specifies the IP address that ends the range.

{DHCP | BOOTP | BOTH}

Specifies the type of client to be serviced by this scope and IP range. DHCP is the default.

MaxBootP

Specifies the maximum number of BOOTP clients.

• MaxBootP is useful only if ClientType is set to support BOOTP-type clients for the scope. If an optional command-line option is used, all command-line options (mandatory, as well as optional) that come before the optional command that is used are required and must appear in proper sequence.
  
  

In the following example, this command adds DHCP clients that are in the IP address range 10.2.2.10 to 10.2.2.20 to the distribution range in the scope.

add iprange 10.2.2.10 10.2.2.20

add reservedip ReservedIP MACAddress [ClientName] [ClientComment] [{DHCP | BOOTP | BOTH}]

ReservedIP

Required. Specifies the IP address to reserve.

MACAddress

Required. Specifies the physical hardware or MAC address to associate with the reserved IP address.

ClientName

Specifies a client name to associate with this reserved client entry. If unspecified, a client name is not associated with this reserved client entry.

ClientComment

Specifies a client comment to associate with this reserved client entry. If unspecified, a client comment is not associated with this reserved client entry.

{DHCP | BOOTP | BOTH}

Specifies the type of clients to associate with this reserved client entry. DHCP is the default.

• If an optional command-line option is used, all command-line options (mandatory as well as optional) that come before the optional command-line option that is used are required and must appear in proper sequence.
  
  

In the following example, this command reserves the IP address 10.2.2.32 for use by the DHCP client that identifies its MAC address as 08-00-2b-30-36-9b when it obtains a lease in the current scope.

add reservedip 10.2.2.32 08002b30369B

delete excluderange StartIP EndIP

StartIP

Required. Specifies the IP address that starts the exclusion range.

EndIP

Required. Specifies the IP address that ends the exclusion range.

In the following example, this command deletes the exclusion range that starts with an IP address of 10.2.1.5 and ends with an IP address of 10.2.1.10 from the current scope.

delete excluderange 10.2.1.5 10.2.1.10

delete iprange StartIP EndIP

StartIP

Required. Specifies the IP address that starts the range to delete.

EndIP

Required. Specifies the IP address that ends the range to delete.

In the following example, this command deletes IP addresses in the range 10.2.1.5 to 10.2.1.10 from the current scope.

delete iprange 10.2.1.5 10.2.1.10

delete lease [{LeaseIP | \\HostName | AllBadAddresses | AllRasServerAddresses}]

{LeaseIP | \\HostName | AllBadAddresses | AllRasServerAddresses}

Required. Specifies the IP address or the host name associated with the leased address. If AllBadAddresses is specified, all records marked as BAD_ADDRESS are removed. If AllRasServerAddresses is specified, all leases obtained by all Routing and Remote Access Service servers are removed.

In the first example, this command deletes the IP address lease 10.2.1.32 from the current scope.

In the second example, this command deletes all IP address leases marked as BAD_ADDRESS from the current scope.

delete lease 10.2.1.32

delete lease AllBadAddresses

delete optionvalue OptCode[user=UserName] [vendor=VendorName]

OptCode

Required. Specifies the unique identifier of the option whose value is to delete.

user= UserName

Specifies the user class from which to delete the currently set option value. If the tag is provided, but the value unspecified, the current default user class is assumed.

vendor= VendorName

Specifies the vendor class from which to delete the currently set option value. If the tag is provided, but the value unspecified, the current default vendor class is assumed.

• Vendor and user classes are only supported for DHCP servers running Windows 2000 Server.
  
  
• If you specify a user class, a vendor class, or both, this command deletes the set option value from only the scope clients that are identified as members of the specified class or classes.
  
  
• To modify the current defaults for an unspecified class that is used with this command, use either the set userclass or set vendorclass commands.
  
  

In the first example, this command deletes the currently set option value for option code 18 from the current scope.

In the second example, this command deletes the currently set option value for option code 18 from the vendor class MyVendorClass.

delete optionvalue 18

delete optionvalue 18 vendor="MyVendorClass"

delete reservedip ReservedIP MACAddress

ReservedIP

Required. Specifies the IP address reservation to delete from the current scope.

MACAddress

Required. Specifies the media access control (MAC) or physical hardware address string for which the IP address was reserved.

In the following example, this command removes the IP address reservation 10.2.1.32 for the MAC address 08002B30369B from the current scope.

delete reservedip 10.2.1.32 08002B30369B

delete reservedoptionvalue ReservedIP OptCode [User=UserName] [vendor=VendorName]

ReservedIP

Required. Specifies the IP address of the reserved client.

OptCode

Required. Specifies the unique code for the option type that is currently assigned to the reserved client.

User=UserName

Specifies the user class from which to delete the option value. If the tag is provided, but no value is specified, the current default user class is assumed.

vendor=VendorName

Specifies the vendor class from which to delete the option value. If the tag is provided, but no value is specified, the current vendor class is assumed.

• Vendor and user classes are only supported for DHCP servers running Windows 2000 Server.
  
  
• To modify the current defaults for an unspecified class used with this command, use either set userclass or set vendorclass.
  
  

In the following example, this command deletes the currently set option value for the option identified by code 18 for reserved IP address of 10.2.2.32 in the current scope.

delete reservedoptionvalue 10.2.2.32 18

dump

When run at the command prompt or in a batch file, output can be saved in a text file. Used without parameters, this command dumps the configuration of the current scope to the command prompt window.

netsh dhcp server { ServerName | IPAddress } scope ScopeID dump >[PathAndFileName]

ServerName | IPAddress

Specifies the server name or IP address of the DHCP server for which the scope configuration is output.

ScopeID

Required. Specifies the IP address of the scope for which the configuration is output.

PathAndFileName

Specifies both the location where the file is saved, and the name of the destination file to which to dump the scope configuration. If unspecified, the scope configuration is dumped to the command prompt window.

The first command, which is run within the netsh environment, dumps the configuration of the current scope to the command prompt window.

The second command, which is run from the command prompt, dumps the configuration of the local server scope 192.168.1.0 to a file named Scopecfg.dmp on the shared network folder \\Backup\Dhcp\.

dump

netsh dhcp server scope 192.168.1.0 dump > \\Backup\Dhcp\Scopecfg.dmp

initiate reconcile [fix]

[fix]

Indicates that the command will fix, if possible, any inconsistencies that it finds in the database.

In the first example, this command verifies the scopes and checks for inconsistencies.

In the second example, this command verifies the scopes, checks for inconsistencies, and fixes any inconsistencies that are found.

initiate reconcile

initiate reconcile fix

set comment [NewComment]

[NewComment]

Specifies a new or modified comment string for the scope.

In the first example, this command sets a comment string that has no spaces.

In the second example, this command sets a comment string that includes spaces.

set comment NewCommentNoSpaces

set comment "New Comment With Spaces"

set name NewName

NewName

Required. Specifies the new name of the scope.

In the first example, this command sets a name that has no spaces.

In the second example, this command sets a name that includes spaces.

set name NewNameNoSpaces

set name "New Name With Spaces"

set optionvalue OptCode{BYTE | WORD | DWORD | STRING | IPADDRESS} [user=UserName] [vendor=VendorName] OptionValue

OptCode

Required. Specifies the code for the option type whose value is to be set.

{BYTE | WORD | DWORD | STRING | IPADDRESS}

Required. Specifies the data type for the option type whose value is to be set.

user=UserName

Specifies the user class. If the tag is provided, but the value is unspecified, the current default user class is assumed.

vendor=VendorName

Specifies the vendor class. If the tag is provided, but the value is unspecified, the current default vendor class is assumed.

OptionValue

Required. Specifies the assigned value for the option type that is specified in OptCode. If the option type supports an array that contains more than a single numeric or IP address value, provide the additional values, in the order that you prefer them, at the end of the command, with each value separated by a space.

• Vendor and user classes are only supported for DHCP servers running Windows 2000 Server.
  
  
• To modify the current defaults for an unspecified class used with this command, use either set userclass or set vendorclass.
  
  

In the first example, this command sets the value of option code 003 to list two router IP addresses (10.1.1.1, 10.1.1.2).

In the second example, this command sets the value that is specified in the first example to apply only to those scope clients that identify themselves as members of the vendor class Vendor1, a class that was previously defined at the server with this specified option type defined for its use.

set optionvalue 003 IPADDRESS 10.1.1.1 10.1.1.2

set optionvalue 003 IPADDRESS vendor=Vendor1 10.1.1.1 10.1.1.2

set reservedoptionvalue ReservedIP OptCode {BYTE | WORD | DWORD | STRING | IPADDRESS} [user=UserName] [vendor=VendorName] OptValue

ReservedIP

Required. Specifies the reserved IP address for which the option value is to be set.

OptCode

Required. Specifies the code for the option type whose value is to be set.

{BYTE | WORD | DWORD | STRING | IPADDRESS}

Required. Specifies the data type for the option type whose value is to be set.

user=UserName

Specifies either the current default user class or the class specified as UserName. If the tag is provided, but no value is specified, the current default user class is assumed.

vendor=VendorName

Specifies either the current default vendor class or the class specified as VendorName. If the tag is provided, but no value is specified, the current default vendor class is assumed.

OptValue

Required. Specifies the assigned value for the option type specified in OptCode. If the option type supports an array that contains more than a single numeric or IP address value, provide the additional values, in the order that you prefer them, at the end of the command with each value separated by a space.

• Vendor and user classes are only supported for DHCP servers running Windows 2000 Server.
  
  
• To modify the current defaults for an unspecified class used with this command, use either set userclass or set vendorclass.
  
  

In the following example, this command sets the value of the router option (code 003) for the reserved client IP address of 10.1.1.50 in the current scope to set IP addresses of 10.1.1.1 and 10.1.1.2 for its configured routers (default gateways).

set reservedoptionvalue 10.1.1.50 003 IPADDRESS 10.1.1.1 10.1.1.2

set scope ScopeAddress

ScopeAddress

Required. Specifies the IP address of the scope to use in subsequent command operations.

In the following example, this command sets the current scope to 10.2.2.0 for subsequent operations.

set scope 10.2.2.0

set state [{0 | 1 | 2 | 3}]

{0 | 1 | 2 | 3}

Indicates the state of the scope: 0-Deactivates the scope, 1-Activates the scope (default), 2-Deactivates the scope and marks the scope as "Switched," 3-Activates the scope and marks the scope as "Switched."

• 2 and 3 are typically used for switched networks or networks where multiple logical networks are hosted on a single physical network.
  
  

In the first example, this command activates a scope.

In the second example, this command deactivates a scope.

set state 1

set state 0

set superscope SuperscopeName {0 | 1}

SuperscopeName

Required. Specifies the name of the superscope to include the current scope. The SuperscopeName is case-sensitive.

{0 | 1}

Required. Indicates whether to set the state of the superscope to active or inactive: 0-Deactivates the superscope, 1-Activates the superscope.

In the following example, this command adds the current scope to the superscope MySuperScope and activates the superscope.

set superscope MySuperScope 1

show clients[{0 | 1}]

{0 | 1}

Indicates the detail level of the output: 0-Shows the following information for each client: IP address, subnet mask, unique ID, lease expiration, and data type (default), 1-Shows all of the information that 0 provides and also displays the fully qualified domain name of each client.

• To view the output of this command effectively, increase the width of the command prompt window to at least 95 characters.
  
  

show clientsv5[{0 | 1}]

{0 | 1}

Indicates the detail level of the output: 0-Shows the following information for each client: IP address, subnet mask, unique ID, lease expires, type (default), 1-Shows all of the information that 0 provides and also displays the fully qualified domain name of each client.

• To view the output of this command effectively, increase the width of the command prompt window to at least 95 characters.
  
  

show excluderange

none

 

• Use other scope-level commands to add and delete exclusion ranges.
  
  

show iprange

none

 

show optionvalue[user=UserName] [vendor=VendorName]

user=UserName

Specifies that the options that are set for the specified user class will display. If the tag is provided, but no value is specified, the current default user class is assumed.

vendor=VendorName

Specifies that the options that are set for the specified vendor class will display. If the tag is provided, but no value is specified, the current default vendor class is assumed.

• Vendor and user classes are only supported for DHCP servers running Windows 2000 Server.
  
  
• To modify the current defaults for an unspecified class used with this command, use either set userclass or set vendorclass.
  
  

In the following example, this command displays all options and values set for the current scope for the user defined class My User Class.

show optionvalue user="My User Class"

show reservedip

none

 

show reservedoptionvalue ReservedIP[user=UserName] [vendor=VendorName]

ReservedIP

Required. Specifies the IP address reservation for which currently assigned options are to display.

user=UserName

Specifies that the options that are set for the specified user class will display. If the tag is provided, but no value is specified, the current default user class is assumed.

vendor=VendorName

Specifies that the options that are set for the specified vendor class will display. If the tag is provided, but no value is specified, the current default vendor class is assumed.

• Vendor and user classes are only supported for DHCP servers running Windows 2000 Server.
  
  
• To modify the current defaults for an unspecified class used with this command, use either set userclass or set vendorclass.
  
  

In the following example, this command displays the option values set for the reserved IP address 10.2.2.100 in the current scope.

show reservedoptionvalue 10.2.2.100

show scope

none

 

show state

none

 

add excluderange StartIP EndIP

StartIP

Required. Specifies the IP address that starts the exclusion range.

EndIP

Required. Specifies the IP address that ends the exclusion range.

• The exclusion range must be a subset of the overall scope address range.
  
  

In the following example, this command adds an exclusion range that starts with 224.2.2.10 and ends with 224.2.2.20 to the distribution range of the current multicast scope.

add excluderange 224.2.2.10 224.2.2.20

add iprange StartIP EndIP

StartIP

Required. Specifies the IP address that starts the range.

EndIP

Required. Specifies the IP address that ends the range.

• The range must be within the valid range of multicast IP addresses (from 224.0.0.0 to 239.255.255.255).
  
  

In the following example, this command adds the IP address range 224.2.2.10 to 224.2.2.20 to the distribution range in the multicast scope.

add iprange 224.2.2.10 224.2.2.20

delete excluderange StartIP EndIP

StartIP

Required. Specifies the IP address that starts the exclusion range.

EndIP

Required. Specifies the IP address that ends the exclusion range.

In the following example, this command removes a multicast scope exclusion with a range of IP addresses that starts at 224.2.2.10 and ends with 224.2.2.20 for the multicast scope.

delete excluderange 224.2.2.10 224.2.2.20

delete iprange StartIP EndIP

StartIP

Required. Specifies the IP address that starts the range to delete.

EndIP

Required. Specifies the IP address that ends the range to delete.

In the following example, this command deletes the IP address range 224.2.2.10 to 224.2.2.20 from the overall range of the full multicast scope.

delete iprange 224.2.2.10 224.2.2.20

dump

When run at the command prompt or in a batch file, output can be saved in a text file. Used without parameters, this command dumps the configuration of the current multicast scope to the command prompt window.

netsh dhcp server [ ServerName | IPAddress ] mscope MscopeID dump >[PathAndFileName]

ServerName | IPAddress

Specifies the server name or IP address of the DHCP server for which the scope configuration is output.

MscopeID

Required. Specifies the name of the multicast scope for which the configuration is output.

PathAndFileName

Specifies both the location where the file is saved, and the name of the destination file to which to dump the multicast scope configuration. If unspecified, scope configuration is dumped to the command prompt window.

The first command, which is run within the netsh environment, dumps the configuration of the current multicast scope to the command prompt window.

The second command, which is run from the command prompt, dumps the configuration of the local server multicast scope TestMscope to the file Mscopecfg.dmp on the shared network folder \\Backup\Dhcp\.

dump

netsh dhcp server mscope TestMscope dump > \\Backup\Dhcp\Mscopecfg.dmp

initiate reconcile

none

 

• This command checks the integrity of the current multicast scope by comparing the current contents of the server database with a mirrored copy of the same information in the Windows registry. If inconsistencies are detected in the database, they are repaired based on the information that is duplicated in the registry. Repair is always attempted for any inconsistency that is found.
  
  

set comment NewComment

NewComment

Required. Specifies the new or revised comment for the multicast scope

In the first example, this command modifies the multicast scope comment with a new comment that contains no spaces.

In the second example, this command modifies the multicast scope comment with a new comment that contains spaces.

set comment NewCommentNoSpaces

set comment "New Comment With Spaces"

set lease Time

Time

Required. Specifies the lease duration for clients of the multicast scope. Specifying -1 sets the duration of the IP address lease to an unlimited or infinite time.

In the following example, this command sets the lease duration for the clients of the current multicast scope to 691200 seconds (eight days).

set lease 691200

set mscope NewName

NewName

Required. Specifies the name of the multicast scope to which the command context is changed. NewName is case-sensitive.

• This command changes the context of the netsh dhcp server mscope> prompt from one multicast scope to another.
  
  
• This command does not rename the current multicast scope. To change the name of the current multicast scope, use the command set name.
  
  

In the first example, this command changes the command context to a multicast scope named MyMulticastScope. Note that the multicast scope name contains no spaces.

In the second example, this command changes the command context to a multicast scope named My Multicast Scope. Note that the multicast scope name contains spaces.

set mscope MyMulticastScope

set mscope "My Multicast Scope"

set name NewName

NewName

Required. Specifies a new name for the current multicast scope.

In the first example, this command sets a new name that contains no spaces for the current multicast scope.

In the second example, this command sets a new name that contains spaces for the current multicast scope.

set name NewNameNoSpaces

set name "New Name With Spaces"

set state {0 | 1}

{0 | 1}

Required. Sets the state of the current multicast scope: 0-Deactivates the current multicast scope, 1-Activates the current multicast scope.

In the first example, this command activates the current multicast scope.

In the second example, this command deactivates the current multicast scope.

set state 1

set state 0

set ttl TTL

TTL

Required. Specifies the Time-to-Live (TTL) value. The valid range for this value is a number from 1 to 255.

In the following example, this command sets the TTL value for the current multicast scope to 32.

set ttl 32

show clients

none

 

• To view the output of this command effectively, increase the width of the command prompt window to at least 95 characters.
  
  

show excluderange

none

 

• If no exclusion ranges have been previously defined for the scope, this command outputs an empty list.
  
  

show iprange

none

 

show lease

none

 

show mibinfo

none

 

show mscope

none

 

show state

none

 

show ttl

none