ZONE04: SOA 'retry' at least 1 hour
Test case identifier
ZONE04 SOA 'retry' at least 1 hour
Objective
The SOA retry value is the number of seconds that describes minimum time elapsed since a failed zone refresh from the primary name server. The SOA refresh value is described in section 3.3.13 in RFC 1035, and clarified in section 2.2 of RFC 1912.
Setting the retry value low will increase the DNS traffic between the servers, and also increase the load on the master name server.
The RIPE-203 recommendation for the retry value is 2 hours (7200 seconds). Older DNSCheck code had a one hour minimum value (3600 seconds), and this is the minimum value we recommend.
Inputs
The domain name to be tested.
Ordered description of steps to be taken to execute the test case
- Retrieve the SOA record from a delegated name server for the domain.
- If the answer from step 1 is not authoritative, iterate step 1 until there is an authoritative answer.
- Retrieve the retry value from the SOA record.
- If the retry value is less than 3600 seconds, this test case fails.
Outcome(s)
If the retry value is less than 3600 seconds, this test case fails.
Special procedural requirements
None.
Intercase dependencies
None.