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starting Authority editor
This entry lacks a business card map, to supplement the relevant content to make the entry more complete, but also rapid upgrade, quickly to edit it! Starting authority, SOA (start of authority): This record indicates that the DNS name server is the source of information for the data tables in the DNS domain, which is the administrator of the host name, which is automatically created when the new zone is created and is the first record in the DNS database file.
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Chinese name
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Start-Up Authority
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Foreign names
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SOA (Start of authority)
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Nature
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Information sources for data tables in a DNS domain
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Refresh Interval
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15 minutes
Directory
- 1 Institutional Scope
Institutional scopeEditThe start of authority (SOA) tab allows you to configure the SOA record for this DNS zone. When a DNS server loads a DNS zone, it first determines the basic information and primary server for this DNS zone through the SOA record, with the following properties: Serial number: The serial number represents the revision number for this zone file. This sequence number automatically increases when any resource record in the zone is modified or when the Increment button is clicked. When zone replication is configured, the secondary DNS server queries the serial number of the DNS zone on the primary server intermittently, and the secondary DNS server initiates zone replication to the primary server if the serial number of the DNS zone on the primary server is greater than its serial number. Primary server: The primary server contains the FQDN of the primary DNS server for this DNS zone, and this name must use "." End. Owner: Specifies the mailbox that manages the owner of this DNS zone, and you can modify the other RP (owner) resource records that are defined in the DNS zone, which must use "." End. Refresh interval: This parameter defines how long the secondary DNS server waits before querying the primary server for zone updates. When the refresh time expires, the secondary DNS server obtains the SOA record of the primary DNS zone from the primary server and then compares the SOA records of the local secondary DNS zone to the zone transfer if the values are different. By default, the refresh interval is 15 minutes. Retry interval: This parameter defines the interval of time that the secondary DNS server waits before retrying when a zone replication fails, by default, 10 minutes. Expiration Time: This parameter defines when a secondary DNS server cannot contact the primary server and can also use this secondary DNS zone to reply to a DNS client request, and when this time limit is reached, the secondary DNS server considers the secondary DNS zone untrusted. The default is 1 days. Minimum (default) TTL: This parameter defines the time-to-live (TTL) for all resource records that are applied to this DNS zone, which is 1 hours by default. This TTL is only the time to live when the resource record is cached on a non-authoritative DNS server, and the DNS server that caches this resource record discards the cache of this record when the TTL expires. Note: Increasing the TTL can reduce the traffic to DNS resolution requests in the network, but may cause problems with DNS resolution latency after modifying resource records. In general, you do not need to modify the default parameters. TTL for this record: This parameter sets the TTL value for this SOA record, which overrides the value set in the Minimum (default) TTL.
Start-up authority (SOA)
