- Ping serial number lookup how to#
- Ping serial number lookup serial numbers#
- Ping serial number lookup update#
Reverse Domain Data Not Correctly Transferred to Secondary No spaces or tabs are allowed at the end of the domain name. If the timestamp for that entry is before the time you finished making changes to the file, either reboot the server or force it to read the new data as explained in "Forcing in.named to Reload DNS Data".Ĭlient can lookup fully qualified names but not short names.Ĭheck the client's /etc/nf file for spaces at the end of the domain name. Review the syslog output for the most recent named nnnn restarted or named nnn reloading nameserver entry.
Ping serial number lookup update#
(There are utilities that can force a primary to immediately transfer data to the secondaries, if you have one of these utilities you can update the secondary without waiting for it to check the primary.) The next time the secondary checks with the primary, it will load the new data. For example, if the SOA number in both files is 37, change the number in the primary's file to 38. If the SOA serial number in the primary file is equal to, or less than, the serial number in the secondary file, increase the serial number on the primary's file so that it is greater than the number in the secondary file.
Ping serial number lookup serial numbers#
This could happen, for example, if you deleted a file on the primary and then recreated it from scratch using an input file of some sort.Ī third possible cause is that you forgot to send a HUP signal to the primary server after making changes to the primary's data files.įirst, check the SOA serial numbers in the data file that you changed and the corresponding file on the secondary server. Since there is no new SOA number, your secondary servers do not update their data to match that of the primary so they are working with the old, unchanged data files.Īnother possible cause is that the SOA serial number in one or more of the primary data files was set to a value lower than the corresponding serial number on your secondary servers. The most likely cause is that you forgot to increment the SOA serial number on the primary master server after you made your change. Or in some instances the changes are recognized and at other times they are not in effect. You add or delete machines or servers but your changes are not recognized or do not take effect. Hosts: nisplus dns filesĬhanges Do Not Take Effect or Are Erratic When using DNS you must include dns in the hosts record of every machine's nf file. For example, a bad hosts line might look like this: hosts: files This is most likely caused by omitting DNS from the hosts line of the server's nf file. Clients Can Find Machine by Name but Server CannotĭNS clients can find machines by either IP address or by host name, but the server can only find machines by their IP addresses.
Ping serial number lookup how to#
This section describes some common DNS problems and how to solve them.
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