Standalone Mode

- Domain Name

Enter the name for the domain to be created.

- Default Mode

- Standalone

Select "Standalone" mode for the domain to be created. This mode is used when DNS services provided by TR7 GTM are intended to run in an Active-Active or Active-Passive structure purely based on defined scenarios — without considering the service status, CPU and RAM usage, or bandwidth information of the TR7 devices in the data centers.

- EXPRESS

Specifies that the domain to be created will operate in "Express" mode. In this mode, when defining the DNS service, an Express profile is created by enabling the Express feature. This profile includes the information of the master DNS server from which the TR7 DNS service will retrieve records via Zone Transfer for the given domain. For this operation to be successful, the master DNS server (e.g., DC, PowerDNS, Bind, etc.) must permit Zone Transfer to the TR7 DNS service address. In Express mode, TR7 GTM retrieves records from the existing DNS server, and these records are managed via that DNS server. Any modifications, additions, or deletions of DNS records are performed on the master DNS server and are instantly reflected on the TR7 GTM device. For more information on Express Profiles, click here.

- Slave Server IPs

Slave DNS servers can be added for the domain to be created. By adding slave DNS servers, they are allowed to perform Zone Transfers from the relevant domain on the TR7 GTM.

- DNSSEC

TR7 GTM supports the DNSSEC feature for each created domain. DNSSEC (Domain Name System Security Extensions) is a security protocol developed to make the DNS (Domain Name System) more secure. Since security was not a priority during the original design of DNS, attackers have been able to perform various attacks through DNS. DNSSEC aims to eliminate these vulnerabilities and ensure a safer browsing experience for users.

- Meta Data

Allows the addition of meta variables and values to DNS queries for the domain being added.

- SOA Format

It is possible to set an SOA format that will operate automatically for each domain created on TR7 GTM. - YYYYMMDD01 Format - Increase by 1 - Current UNIXTIME - Off

- Record Name

Enter the name of the DNS record to be created.

- Record Type

Select the type of DNS record.

- TTL

Specify the TTL (Time To Live) value to define the cache duration of the record. For redundancy and business continuity purposes, a short TTL is recommended.

- Record Behavior

Automatically populated based on the "Default Mode" selected for the previously created domain. For more details, refer to the "Domain Addition Form" above.

- Topological Selection

When enabled, allows the use of "Topology" selection for the DNS record being added.

• Always: The record that is always active regardless of any condition and is returned in DNS responses unconditionally.
• Network: The response for the record is determined based on IP and Subnet information entered into the Network List.
• Country: The response is determined according to the country information of the DNS query.
• Continent: The response is determined according to the continent information of the DNS query.
• ASN: The response is determined based on Autonomous System Numbers (ASNs) or IP network groups.

- Record

The address corresponding to the record type is entered here for the given "Record Name." For example, for an "A" type DNS record, a record value like 83.11.173.211 can be entered.

- HC

Determines which address will respond based on health check results for each record entry, topological selection, and health scenarios. For more information, refer to Health Checks and Health Scenarios.

• Static: The record is always considered healthy and is returned in DNS responses regardless of any health scenario.
• Disabled: The record is always considered unhealthy and will never be returned in DNS responses.
• HC Scenario: Returns records deemed healthy based on configured health scenarios. For more details, click here.

- Balance Algorithm

Specifies the algorithm to be used when responding to DNS queries.

• All Records: Returns all healthy records at once. If there is no failover condition, all healthy records from Main DC are returned; otherwise, healthy records from DR DC are returned.
• First Healthy Record: Returns the first healthy record in the list.
• First 2 Healthy Record: Returns the first two healthy records.
• First 3 Healthy Record: Returns the first three healthy records.
• Round Robin: Responds to queries using the Round Robin algorithm from among healthy records.
• Weighted Round Robin: Uses Weighted Round Robin among healthy records. Weights are configured per record.
• Random: Randomly returns one of the healthy records.
• Weighted Random: Randomly returns one of the weighted healthy records.
• Geographic Proximity: Returns the geographically closest healthy record based on the query origin.

- Fail-Safe Records

Specifies which response to return if all records in both the Main Datacenter and the DR Datacenter are unhealthy.

- Add

Click the Add button to add the DNS record.

- Sync via Express

Since DNS records are retrieved from the master DNS server when Express is enabled, records cannot be added manually. Click the "Sync via Express" button to fetch existing records via Zone Transfer from the master DNS server.

- Editing DNS Records

For DNS records obtained via Zone Transfer, the record type and name are not entered manually. They are fetched exactly as defined on the master DNS server. Additionally, fields like Record Name and Record cannot be modified from the edit screen.