Set-DnsServerCache

Set-DnsServerCache

Modifies cache settings for a DNS server.

구문

Parameter Set: Set2
Set-DnsServerCache [-AsJob] [-CimSession <CimSession[]> ] [-ComputerName <String> ] [-LockingPercent <UInt32> ] [-MaxKBSize <UInt32> ] [-MaxNegativeTtl <TimeSpan> ] [-MaxTtl <TimeSpan> ] [-PassThru] [-PollutionProtection <Boolean> ] [-StoreEmptyAuthenticationResponse <Boolean> ] [-ThrottleLimit <Int32> ] [-Confirm] [-WhatIf] [ <CommonParameters>]

자세한 설명

The Set-DnsServerCache cmdlet modifies cache settings for a Domain Name System (DNS) server.

매개 변수

-AsJob

-CimSession<CimSession[]>

원격 세션에서 또는 원격 컴퓨터에서 cmdlet을 실행합니다. New-CimSession 또는 Get-CimSession cmdlet의 출력과 같은 컴퓨터 이름이나 세션 개체를 입력합니다. 기본값은 로컬 컴퓨터의 현재 세션입니다.

-ComputerName<String>

Specifies a DNS server. 이 매개 변수에 허용되는 값은 다음과 같습니다. an IPv4 address, an IPv6 address, and any other value that resolves to an IP address, such as fully qualified domain name (FQDN), host name, or NETBIOS name.

-LockingPercent<UInt32>

Specifies a percentage of the original Time to Live (TTL) value that caching can consume.

Cache locking is configured as a percent value. For example, if the cache locking value is set to 50, the DNS server does not overwrite a cached entry for half of the duration of the TTL. By default, the cache locking percent value is 100. This value means that the DNS server will not overwrite cached entries for the entire duration of the TTL.

-MaxKBSize<UInt32>

Specifies the maximum size, in kilobytes, of the memory cache of a DNS server.

-MaxNegativeTtl<TimeSpan>

Specifies how many seconds (0x1-0xFFFFFFFF) an entry that records a negative answer to a query remains stored in the DNS cache. The default setting is 0x384 (900) seconds

-MaxTtl<TimeSpan>

Determines how many seconds (0x0-0xFFFFFFFF) a record is saved in cache. If you use the 0x0 setting, the DNS server does not cache records. The default setting is 0x15180 (86,400 seconds, or one day).

-PassThru

작업하고 있는 항목을 나타내는 개체를 반환합니다. 기본적으로 이 cmdlet은 출력을 생성하지 않습니다.

-PollutionProtection<Boolean>

Determines whether DNS filters name service (NS) resource records that are cached. Valid values are zero, which caches all responses to name queries and is the default value; and one, which caches only the records that belong to the same DNS subtree.

When you set this parameter value to False, cache pollution protection is disabled. A DNS server caches the Host (A) record and all queried NS resources that are in the DNS server zone. In this case, DNS can also cache the NS record of an unauthorized DNS server. This event causes name resolution to fail or to be appropriated for subsequent queries in the specified domain.

When you set the value for this parameter to True, the DNS server enables cache pollution protection and ignores the Host (A) record. The DNS server performs a cache update query to resolve the address of the NS if the NS is outside the zone of the DNS server. The additional query minimally affects DNS server performance.

For more information about DNS cache locking, see DNS Cache Locking. For more information about cache pollution protection, see Securing the DNS Server Service. For more information about NS resource records, see Managing resource records.

-StoreEmptyAuthenticationResponse<Boolean>

Specifies whether a DNS server stores empty authoritative responses in the cache (RFC-2308). We recommend that you limit this value to either 0x00000000 or 0x00000001, but you can specify any value. The default value is 0x00000001. You must allow and treat literally the value zero.

-ThrottleLimit<Int32>

이 cmdlet을 실행하도록 설정할 수 있는 최대 동시 작업 수를 지정합니다. 이 매개 변수가 생략되거나 값 0이 입력되면 Windows PowerShell®은 컴퓨터에서 실행 중인 CIM cmdlet의 수에 따라 cmdlet에 대한 최적의 제한 한도를 계산합니다. 제한 한도는 현재 cmdlet에만 적용되며 세션이나 컴퓨터에는 적용되지 않습니다.

-Confirm

cmdlet을 실행하기 전에 확인 메시지가 표시됩니다.

-WhatIf

cmdlet이 실행될 경우 결과 동작을 표시합니다. cmdlet이 실행되지 않습니다.

<CommonParameters>

이 cmdlet은 일반 매개 변수 -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutBuffer 및 -OutVariable을 지원합니다. 자세한 내용은 다음을 참조하세요. about_CommonParameters(https://go.microsoft.com/fwlink/p/?LinkID=113216).

입력

입력 유형은 cmdlet에 파이프할 수 있는 개체의 유형입니다.

-

Class DNSServerCache  
  
{  
  
uint32 MaxCacheTTL; // Maximum time, in seconds, that the record of a recursive name query can remain in the DNS server cache. The DNS server deletes records from the cache when the value of this entry expires, even if the value of the TTL field in the record is greater. The default value of this property is 86,400 seconds (one day).  

uint32 MaxNegativeCacheTTL; // Maximum time, in seconds, that a name error result from a recursive query can remain in the DNS server cache. The DNS server deletes records from the cache when this timer expires, even if the TTL field is greater. Default value is 86,400 (one day).  

boolean AutoCacheUpdate // Indicates whether the DNS Server attempts to update its cache entries by using data from root servers. When a DNS server starts, it needs a list of root server hints and Host A records for the server cache file. Microsoft DNS servers have a feature that enables them to attempt to write back a new cache file based on the responses from root servers.  

  

출력

출력 유형은 cmdlet이 내보내는 개체의 유형입니다.

• Microsoft.Management.Infrastructure.CimInstance#DnsServerCache

예제

Example 1: Set the maximum cache size on a DNS server

This command sets the maximum cache size to 10,240 kilobytes on a DNS server that has an FQDN of Win12S-05.DNSServer-01.Contoso.com.

PS C:\> Set-DnsServerCache -MaxKBSize 10240 -ComputerName "Win12S-05.DNSServer-01.Contoso.com"

관련 항목

Clear-DnsServerCache

Get-DnsServerCache

Show-DnsServerCache

RFC 2308