Searching the Help
To search for information in the Help, type a word or phrase in the Search box. When you enter a group of words, OR is inferred. You can use Boolean operators to refine your search.
Results returned are case insensitive. However, results ranking takes case into account and assigns higher scores to case matches. Therefore, a search for "cats" followed by a search for "Cats" would return the same number of Help topics, but the order in which the topics are listed would be different.
Search for | Example | Results |
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A single word | cat
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Topics that contain the word "cat". You will also find its grammatical variations, such as "cats". |
A phrase. You can specify that the search results contain a specific phrase. |
"cat food" (quotation marks) |
Topics that contain the literal phrase "cat food" and all its grammatical variations. Without the quotation marks, the query is equivalent to specifying an OR operator, which finds topics with one of the individual words instead of the phrase. |
Search for | Operator | Example |
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Two or more words in the same topic |
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Either word in a topic |
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Topics that do not contain a specific word or phrase |
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Topics that contain one string and do not contain another | ^ (caret) |
cat ^ mouse
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A combination of search types | ( ) parentheses |
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- DNS Zone Discovery
- Overview
- Supported Versions
- How to Discover DNS Zone by nslookup
- How to Discover DNS Zone by DNS
- How to Discover Hosts by Shell using nslookup on DNS Server
- DNS Zone by nslookup Job
- DNS Zone by DNS Job
- Hosts by Shell using nslookup on DNS Server Job
- NSLOOKUP on DNS Server Adapter
- Discovery Mechanism – Windows
- Discovery Mechanism – UNIX-like
- Glossary
Overview
DNS Zone discovery retrieves the DNS Zone topology and records that belong to the zone. To transfer the zone, the machine performing the query should be included in a white list configured in the name server. This method requires a special DNS server configuration to permit Probe zone transfer.
The discovery mechanism triggers on a particular name server that records which zones should be reported, as follows:
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Checks the zoneList parameter for the list of zones to transfer alias records.
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Ignores zones with the name arpa, localhost, or '.' (root).
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For each zone, transfers all records of type CNAME and A (second step). If the transfer fails, the zone is not reported.
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Creates realization links.
For details, see DNS Zone by nslookup Job.
DNS Zone discovery is implemented in the following ways:
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The DNS Zone by nslookup job queries the DNS server for zone records from the Server itself. This method requires Shell access. For details, see How to Discover DNS Zone by nslookup
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The DNS Zone by DNS job queries the DNS server for zone records from the Data Flow Probe machine. This method requires a special DNS server configuration to permit Probe zone transfer. For details, see How to Discover DNS Zone by DNS
In the case where administrators do not want to add Shell access to DNS servers or read access to the configuration file, you can transfer zones specified in the mandatory zoneList adapter parameter. For details, see DNS Zone by nslookup Job.
These implementations retrieve the same topology and have a common discovery mechanism that differs only in the client type (Server or Probe).
Note The volume of retrieved topology data may be influenced by the parameters set for particular jobs.