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Why is DNS field incorrectly reporting the wrong host (no matching PTR record exists).

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The DNS field (also known as Reverse DNS) for a device is wrong.

If I do an "nslookup 10.10.1.1" on the windows server that hosts NPM 10.0, it does not resolve. I could add a PTR record.

however, the device name is cust-siteA-rtr01, but "DNS" field in NPM reports as cust-siteB-rtr01.

Is this field really a reverse DNS lookup of the IP address? There are some reports that this field is actually part of the initial device discovery and can only be changed by hacking the SQL DB.

Please advise.

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There is a hosts file, but not with any matching IP address.

We took the shortcut and created a matching PTR record in our DNS server and did a re-discover. The "DNS" value now matches what is now in the new PTR record. We will treat this as an anomoly.

Thanks for the help.

View solution in original post

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Level 13

make sure there isn't a hosts file on you Orion server(s)

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There is a hosts file, but not with any matching IP address.

We took the shortcut and created a matching PTR record in our DNS server and did a re-discover. The "DNS" value now matches what is now in the new PTR record. We will treat this as an anomoly.

Thanks for the help.

View solution in original post

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