最後更新: 2020-08-12
介紹
方法
- Policy-Based QoS
- NetQoS
Policy-Based QoS
Differentiated services code point (DSCP) value to specify the priority of traffic.
OS >= s2008r2
ON DC Domain Only
設定
Group Policy Management Console (GPMC) # gpedit.msc
...
* The QoS policy created by gpedit only creates policies for the "domain" network profile.
NetQoS
OS: 2012, 2016
PowerShell CLI
- New-NetQosPolicy
- Get-NetQosPolicy
- Remove-NetQosPolicy
- Set-NetQosPolicy
# Create a QoS policy that matches traffic to a subnet
PS C:\> New-NetQosPolicy -Name "Backup" -IPDstPrefixMatchCondition "192.168.234.0/24" -NetworkProfile Domain -DSCPAction 40
# Create a QoS policy that matches traffic sent to a port
PS C:\> New-NetQosPolicy -Name "HTTPS" -IPPort 443 -IPProtocol TCP -ThrottleRateActionBitsPerSecond 50MB
Name : HTTPS Owner : Group Policy (Machine) NetworkProfile : All Precedence : 127 JobObject : IPProtocol : TCP IPPort : 443 ThrottleRate : 52.429 MBits/sec
# Create a default QoS policy
PS C:\> New-NetQosPolicy -Name "Wildcard" -Default -MinBandwidthWeightAction 30
# Create a QoS policy that matches an application
New-NetQosPolicy -Name "FTP" -AppPathNameMatchCondition "ftp.exe" -ThrottleRateActionBitsPerSecond 1MB -PolicyStore ActiveStore
說明
---
-Name
Specifies the QoS policy name
-NetworkProfile
Specifies the profile, or connection type, of a network
Accepted values: Domain, Public, Private, All (DEFAULT)
-DSCPAction
Specifies the differentiated services code point (DSCP) value.
The acceptable values for this parameter are: 0 through 63.
---
-IPPort N
It can be either source port or destination port.
-IPSrcPortMatchCondition N
-IPDstPortMatchCondition N
---
-Default
Specifies a wildcard filter that can be used to capture all traffic that is not matched by any other filter.
-MinBandwidthWeightAction
Specifies a numerical value for minimum bandwidth that a flow should get relatively.
1 through 100.
---
-PolicyStore
Specifies the location of the policy that is stored.
If a policy is stored in ActiveStore, then the policy does not persist after restart.
The acceptable values for this parameter are:
- ActiveStore
- COMPUTERNAME (DEFAULT)
- GPO:COMPUTERNAME -- GPO:DOMAIN\GPONAME -- LDAP://LDAP-URL
Get
PS C:\> Get-NetQoSPolicy
Name : HTTPS Owner : Group Policy (Machine) NetworkProfile : All Precedence : 127 JobObject : IPProtocol : TCP IPPort : 443 ThrottleRate : 52.429 MBits/sec
PS C:\> Get-NetQosPolicy -PolicyStore "ActiveStore"
If ActiveStore is specified as the location, the user will see all the effective QoS policies,
regardless of where the QoS policies are stored.
Remove
PS C:\> Remove-NetQosPolicy -Name "Backup"
Set
PS C:\> Set-NetQosPolicy -Name "Backup" -IPDstPortStart 3501 -IPDstPortEnd 3510
PS C:\> Get-NetQosPolicy -Name "wildcard" | Set-NetQosPolicy -Precedence 250
-Precedence
Specifies the priority of a QoS policy. (0 through 255, default value is 127)
A higher priority policy will override a lower priority policy in case the priorities are conflicting.
DSCP value
DSCP allows values from 0 to 63 to be specified within the TOS field of an IPv4 packet
By default, Windows traffic has a DSCP value of 0.
DSCP values are defined in RFC 2474.
0 Best Effort (Drop Probability: N/A) # Default ... 46 High Priority (Drop Probability: N/A) ...
RFC 791 precedence values
000 (0)Routine or Best Effort 001 (1)Priority 010 (2)Immediate 011 (3)Flash (mainly used for voice signaling or for video) 100 (4)Flash Override 101 (5)Critical (mainly used for voice RTP) 110 (6)Internet 111 (7)Network