1 Enabling DNS request logging
In order to globally configure the health status interval to 7 seconds, configure the following on the GSLB ServerIron ADX.
The distributed health check ServerIron ADX 1.1.1.108 now starts sending the health check status information to the GSLB ServerIron ADX every 7 seconds.
In order to change the health status interval for ServerIron ADX 1.1.1.108 to 4 seconds, configure the following on the ServerIron ADX 1.1.1.108.
ServerIron ADX 1.1.1.108 now starts sending health check status information to GSLB ServerIron ADX every 4 seconds. Note that this locally configured health status interval overrides the globally configured health status interval of 7 seconds.
Since the GSLB ServerIron ADX supports the distributed health check feature, the Flashback metric is disabled by default. Note that since site ServerIron ADX 1.1.1.108 supports the distributed health check, you should not enable the Flashback metric on the GSLB ServerIron ADX.
Example 2
In this example:
•The GSLB ServerIron ADX supports the distributed health check feature.
•Site ServerIron ADXs 1.1.1.105, ServerIron ADX 1.1.1.106 and ServerIron ADX 1.1.1.107 and ServerIron ADX 1.1.1.108 all belong to site “sunnyvale”.
•Only ServerIron ADX 1.1.1.105 supports the distributed health check feature. The other ServerIron ADXs do not support the distributed health check feature.
If most of the ServerIron ADXs at a site do not support the distributed health check feature and only a few ServerIron ADXs support the distributed health check feature, then the most concise way to configure this is to disable the distributed health check feature for the entire site and then individually enable it for the site ServerIron ADXs that support the distributed the health check feature.
In the above example, configure the following on the GSLB ServerIron ADX.
Example 3
In this example:
•The GSLB ServerIron ADX does not support the distributed health check feature.
•Site ServerIron ADXs 1.1.1.105, ServerIron ADX 1.1.1.106 and ServerIron ADX 1.1.1.107 and ServerIron ADX 1.1.1.108 all belong to site “sunnyvale”.
•All the site ServerIron ADXs support the distributed health check feature.
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