eG Monitoring
 

Measures reported by IbDNSStateTest

This test reports the efficiency of the Infoblox appliance in an infrastructure by collecting the following information:

  • The rate at which the queries are processed and the percentage of queries processed by the DNS cache;
  • The time duration for which the reply for incoming queries was received from an authoritative server for the last 5 minutes and 15 minutes respectively;
  • The number of queries replied by an authoritative server in the last 5 minutes and last 15 minutes;
  • The time duration for which the reply for incoming queries was received from an authoritative server after referencing another server in the last 5 minutes and 15 minutes respectively; and
  • The number of queries replied by an authoritative server after referencing another server in the last 5 minutes and last 15 minutes respectively.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Cache_hit_ratio Indicates the percentage of queries that were serviced by the DNS cache. Percent A high value is desired for this measure.
Queries_rate Indicates the rate at which DNS queries were processed by the system. Queries/sec  
NAuth_avg_latency_5min Indicates the average time during the last 5 minutes the reply for the incoming DNS queries was received from the authoritative server after referencing another server. Secs A low value is desired for this measure.

An authoritative zone is a zone for which the local (primary or secondary) server references its own data when responding to queries. The local server is authoritative for the data in this zone and responds to queries for this data without referencing another server.
NAuth_qry_used_last5min Indicates the number of incoming DNS queries for which the reply was given by the authoritative server after referencing another server during the last 5 minutes. Number  
NAuth_avg_latency_15min Indicates the average time during the last 15 minutes the reply for the incoming DNS queries was received from the authoritative server after referencing another server. Secs A low value is desired for this measure.
NAuth_qry_used_last15min Indicates the number of incoming DNS queries for which reply was given by an authoritative server by referencing another server during the last 15 minutes. Number  
Auth_avg_latency_5min Indicates the average time during the last 5 minutes the reply for the incoming DNS queries was received from an authoritative server. Secs  
Auth_qry_used_last5min Indicates the number of incoming DNS queries for which reply was received from an authoritative server during the last 5 minutes. Number  
Auth_avg_latency_15min Indicates the average time during the last 15 minutes the reply for the incoming DNS queries was received from an authoritative server. Secs  
Auth_qry_used_last15min Indicates the number of incoming DNS queries for which authoritative reply was given during the last 5 minutes. Number