Set-NetRoute

Module:

NetTCPIP

Modifies an entry or entries in the IP routing table.

Syntax

Set-NetRoute
   [[-DestinationPrefix] <String[]>]
   [-InterfaceIndex <UInt32[]>]
   [-InterfaceAlias <String[]>]
   [-NextHop <String[]>]
   [-AddressFamily <AddressFamily[]>]
   [-Protocol <Protocol[]>]
   [-PolicyStore <String>]
   [-IncludeAllCompartments]
   [-Publish <Publish>]
   [-RouteMetric <UInt16>]
   [-ValidLifetime <TimeSpan>]
   [-PreferredLifetime <TimeSpan>]
   [-CimSession <CimSession[]>]
   [-ThrottleLimit <Int32>]
   [-AsJob]
   [-PassThru]
   [-WhatIf]
   [-Confirm]
   [<CommonParameters>]

Set-NetRoute
   -InputObject <CimInstance[]>
   [-Publish <Publish>]
   [-RouteMetric <UInt16>]
   [-ValidLifetime <TimeSpan>]
   [-PreferredLifetime <TimeSpan>]
   [-CimSession <CimSession[]>]
   [-ThrottleLimit <Int32>]
   [-AsJob]
   [-PassThru]
   [-WhatIf]
   [-Confirm]
   [<CommonParameters>]

Description

The Set-NetRoute cmdlet modifies entries in the IP routing table. Specify routes to modify by using the DestinationPrefix parameter or the NextHop parameter. You can also specify routes by using the Get-NetRoute cmdlet. If you do not specify which routes to modify, the cmdlets modifies all of the routes on the computer.

IP routing is the process of forwarding a packet based on the destination IP address. Routing occurs at TCP/IP hosts and at IP routers. The sending host or router determines where to forward the packet. To determine where to forward a packet, the host or router consults a routing table that is stored in memory. When TCP/IP starts, it creates entries in the routing table. You can add entries either manually or automatically.

For more information about routing, see Chapter 5 - IP Routing in the TechNet library.

After you create an entry in the routing table, you cannot modify the destination prefix or the next hop value. If necessary, use the Remove-NetRoute cmdlet to remove the entry, and then recreate it with the desired values by using the New-NetRoute cmdlet.

Examples

Example 1: Change the route metric

PS C:\>Set-NetRoute -RouteMetric 257

This command changes the route metric to 257. This route is less preferred than routes that have the default value of 256.

Example 2: Modify the preferred lifetime

PS C:\> $TimeSpan = New-TimeSpan -Days 1
PS C:\> Set-NetRoute -DestinationPrefix "192.168.0.0/24" -PreferredLifetime $TimeSpan

The first command uses the New-TimeSpan cmdlet to create a time span of one day, and then stores it in the $TimeSpan variable. For more information, type Get-Help New-TimeSpan.

The second command changes the lifetime of the IP route that has the destination prefix 192.168.0.0/24. The command specifies the object stored in the $TimeSpan variable as the new preferred lifetime.

Parameters

-AddressFamily

Specifies an array of IP address families of IP routes. The cmdlet modifies the family that you specify for the IP route. The acceptable values for this parameter are:

• IPv4
• IPv6

Type:	AddressFamily[]
Accepted values:	IPv4, IPv6
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-AsJob

Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to complete.

Type:	SwitchParameter
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-CimSession

Runs the cmdlet in a remote session or on a remote computer. Enter a computer name or a session object, such as the output of a New-CimSession or Get-CimSession cmdlet. The default is the current session on the local computer.

Type:	CimSession[]
Aliases:	Session
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Confirm

Prompts you for confirmation before running the cmdlet.

Type:	SwitchParameter
Aliases:	cf
Position:	Named
Default value:	False
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-DestinationPrefix

Specifies an array of destination prefixes of IP routes. The cmdlet modifies settings for this IP route. A destination prefix contains an IP address prefix and a prefix length, separated by a slash (/). A value of 0.0.0.0/0 for IPv4 or ::/0 for IPv6 indicates that the value of the NextHop parameter is a default gateway.

Type:	String[]
Position:	0
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-IncludeAllCompartments

Indicates that the cmdlet includes routes from all configured network compartments. If you do not specify this parameter, the cmdlet modifies only routes in the default network compartment.

Type:	SwitchParameter
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-InputObject

Specifies the input object that is used in a pipeline command.

Type:	CimInstance[]
Position:	Named
Default value:	None
Required:	True
Accept pipeline input:	True
Accept wildcard characters:	False

-InterfaceAlias

Specifies an array of aliases of network interfaces. The cmdlet modifies IP routes for the interfaces that have the aliases that you specify.

Type:	String[]
Aliases:	ifAlias
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	True
Accept wildcard characters:	False

-InterfaceIndex

Specifies an array of indexes of network interfaces. The cmdlet modifies IP routes for the interfaces located at the indexes that you specify.

Type:	UInt32[]
Aliases:	ifIndex
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	True
Accept wildcard characters:	False

-NextHop

Specifies an array of next hop values. The cmdlet modifies the routes that have these values. A value of 0.0.0.0 for IPv4 or :: for IPv6 indicates that the route is on the local subnet.

Type:	String[]
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-PassThru

Returns an object representing the item with which you are working. By default, this cmdlet does not generate any output.

Type:	SwitchParameter
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-PolicyStore

Specifies a PolicyStore value. The cmdlet changes the PolicyStore value to the value that you specify. The acceptable values for this parameter are:

• ActiveStore. The IP address information is valid.
• PersistentStore. The computer saves IP address information across restarts. When the computer restarts, it copies the saved settings to the ActiveStore.

Specify ActiveStore only.

If you do not specify this parameter, the default entries are created in both the ActiveStore and the PersistentStore.

Type:	String
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-PreferredLifetime

Specifies a preferred lifetime, as a TimeSpan object, of an IP route. The cmdlet changes the lifetime to the value that you specify. To obtain a TimeSpan object, use the New-TimeSpan cmdlet. For more information, type Get-Help New-TimeSpan.

Type:	TimeSpan
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Protocol

Specifies an array of types of routing protocols. The cmdlet changes the protocol to the value you specify. The acceptable values for this parameter are:

• Bbn
• Bgp
• Dhcp
• Dvmrp
• Egp
• Eigrp
• EsIs
• Ggp
• Hello
• Icmp
• Idpr
• Igrp
• IsIs
• Local
• NetMgmt
• Ospf
• Rip
• Rpl
• Other

Type:	Protocol[]
Accepted values:	Other, Local, NetMgmt, Icmp, Egp, Ggp, Hello, Rip, IsIs, EsIs, Igrp, Bbn, Ospf, Bgp, Idpr, Eigrp, Dvmrp, Rpl, Dhcp
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-Publish

Specifies the publish setting of an IP route. The cmdlet changes the publish value to the value that you specify. The acceptable values for this parameter are:

• No. Do not publish or advertise IP route information in router advertisements.
• Yes. Publish and advertise IP route information with an infinite valid lifetime in router advertisements.
• Age. Publish and advertise IP route information with a finite valid lifetime, in router advertisements. Specify a valid lifetime by using the ValidLifetime parameter.

Type:	Publish
Accepted values:	No, Age, Yes
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-RouteMetric

Specifies an integer route metric for an IP route. The cmdlet changes the metric to the value that you specify. To choose among multiple routes, the computer adds this value to the interface metric value. The computer selects the route with the lowest combined value. To modify the interface metric, use the Set-NetIPInterface cmdlet.

Type:	UInt16
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-ThrottleLimit

Specifies the maximum number of concurrent operations that can be established to run the cmdlet. If this parameter is omitted or a value of 0 is entered, then Windows PowerShell® calculates an optimum throttle limit for the cmdlet based on the number of CIM cmdlets that are running on the computer. The throttle limit applies only to the current cmdlet, not to the session or to the computer.

Type:	Int32
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-ValidLifetime

Specifies a valid lifetime, as a TimeSpan object, for an IP route. The cmdlet changes the lifetime to the value that you specify. To obtain a TimeSpan object, use the New-TimeSpan cmdlet.

Type:	TimeSpan
Position:	Named
Default value:	None
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

-WhatIf

Shows what would happen if the cmdlet runs. The cmdlet is not run.

Type:	SwitchParameter
Aliases:	wi
Position:	Named
Default value:	False
Required:	False
Accept pipeline input:	False
Accept wildcard characters:	False

Inputs

CimInstance

The Microsoft.Management.Infrastructure.CimInstance object is a wrapper class that displays Windows Management Instrumentation (WMI) objects. The path after the pound sign (#) provides the namespace and class name for the underlying WMI object.

Outputs

None

Related Links

• New-TimeSpan
• Find-NetRoute
• Get-NetRoute
• New-NetRoute
• Remove-NetRoute
• Set-NetIPInterface