Manual Chapter :
Common elements for BIG-IP DNS general config
Applies To:
Show VersionsBIG-IP DNS
- 17.1.1, 17.1.0, 17.0.0, 16.1.4, 16.1.3, 16.1.2, 16.1.1, 16.1.0, 16.0.1, 16.0.0, 15.1.10, 15.1.9, 15.1.8, 15.1.7, 15.1.6, 15.1.5, 15.1.4, 15.1.3, 15.1.2, 15.1.1, 15.1.0, 15.0.1, 15.0.0
Common elements for BIG-IP DNS general config
- On the Main tab, click.The General configuration screen opens.
- On the Main tab, click.The Load Balancing configuration screen opens.
- On the Main tab, click.The Metrics Collection configuration screen opens.
- On the Main tab, click.The General configuration screen opens.
- Select theSynchronizecheck box.
- In theTime Tolerancefield, type the maximum age difference in seconds, between the sets of configuration files on the systems in a BIG-IP DNS configuration synchronization group.
- Select theSynchronize DNS Zone Filescheck box.
- In theGroup Namefield, accept the default value.
- In theGroup Namefield, type the name of the synchronization group.
- In theHeartbeat Intervalfield, type the frequency at which you want BIG-IP DNS to query other BIG-IP systems for updated data.The default value is 10 seconds. When configuring monitors, ensure that the monitorIntervalsetting is greater than this setting.
- The value of theHeartbeat Intervalindicates the frequency at which BIG-IP DNS queries other BIG-IP systems for updated data.The default value is 10 seconds.
- For the Cache Local DNS Servers setting, select theEnabledcheck box.
- For the Drain Persistent Requests setting, select theEnabledcheck box.
- For the Auto-Discover setting, select theEnabledcheck box.
- For the Request Interval setting, type a value in thesecondsfield.
- In theMaximum Synchronous Monitor Requestsfield, type the number of queries that resources can accept from monitors at any given time.
- Select theMonitor Disabled Objectscheck box.
- Select theSet Recursioncheck box.
- Select theCreate Wildcard Wide IP DNS Recordscheck box.
- In theCertificate Depthfield, type1.
- In theCertificate Depthfield, type2.
- In theBig3d Certificate Depthfield, type?.
- In theStatic Persist CIDR (IPv4)field, type the number of bits the system uses to identify IPv4 addresses for the Static Persist load balancing method.
- In theStatic Persist CIDR (IPv6)field, type the number of bits the system uses to identify IPv6 addresses for the Static Persist load balancing method.
- SelectDepends on Monitors Onlyfrom theVirtual Server Statuslist.
- From theDomain Validationlist, select one of the following options.OptionDescriptionNoneThe system does not restrict the use of any characters in domain names.StrictThe system allows only a narrow interpretation of DNS names; that is, alphanumeric characters and the dash ( - ) character.Allow UnderscoresThe system follows the Strict validation rules, and also allows the underscore ( _ ) character.
- In the Configuration Save area, for the Automatic setting, clear theEnabledcheck box to disable automatic saves of BIG-IP DNS configuration changes.If you disable automatic saves of BIG-IP DNS configuration changes, to save those changes you must run this command from the command line:tmsh save sys config gtm-only partitions all
- In the Configuration Save area, for theAutomaticsetting, select theEnabledcheck box.
- In the Configuration Save area, for theTimeoutfield, type the number of seconds that follow a BIG-IP DNS configuration change before the BIG-IP DNS configuration is automatically saved.The values shown in the table are worth noting:Value in secondsDescription0BIG-IP DNS immediately saves changes to the configuration.86400Maximum number of seconds following a BIG-IP DNS configuration change before the BIG-IP system saves the BIG-IP DNS configuration.15Default number of seconds following a BIG-IP DNS configuration change before the BIG-IP system saves the BIG-IP DNS configuration.Setting the value of theTimeoutfield to less than10seconds can impact system performance.
- In theKey Creation Serverfield, type the server name of the BIG-IP DNS system that you want to designate as the creator of new generations of DNSSEC keys. You must include the path and folder name in which the server resides, for example:/Common/gtm_north_america.
- Select theRespect Fallback Dependencycheck box.
- Select theIgnore Path TTLcheck box.
- Deselect theVerify Virtual Server Availabilitycheck box.
- Select theVerify Virtual Server Availabilitycheck box.
- ClickUpdate.