Copyright © 1997 by International Business Machines Corporation
DDNS Server Administrator Help
Use the Notify Servers tab of the Primary
Domain Notebook to specify the name servers that are to be notified when
the serial number changes. The serial number identifies the current revision
level of the data for this domain. For dynamic domains, the serial number is
automatically incremented by the name server; for static domains, it is
automatically incremented by the DDNS Server Administrator program when the
configuration is saved. The default notify set is the set of secondary name
servers defined for this domain on the Secondary Name Servers tab.
The Notify Servers tab has these fields and check boxes:
- Notify the domain name servers listed below when the domain database
serial number is updated.
- When checked, indicates that you want this name server to notify the
specified name servers whenever the serial number changes (indicating that the
domain data has changed). This option facilitates the updating of the
secondary name servers and enables them to remain more current.
- IP address
- Specifies the IP address (in dotted decimal notation) of a name server to
add to the notify set. After typing the address, click Add.
- List box
- Displays the names and IP addresses of the name servers in the notify set.
To remove an entry from the list box, select the entry and click Remove.
- Time to wait between attempts to notify a particular server
- Specifies the interval, in seconds, between successive attempts to notify
a particular name server, if the attempts fail.
- Number of times to attempt notifying a server
- Specifies the maximum number of times that attempts are to be made to
notify a particular name server if the server fails to respond.
- Time to wait between notifying different servers
- Specifies the interval, in seconds, between the first attempt to notify a
server in the notify set and the first attempt to notify the next server in
the notify set.
- For dynamic domains, increment the database serial number
- Specifies the conditions for updating the serial number. The serial number
is updated whenever either of these conditions is met.
Note:
When setting these values, consider the volume of requests and the rate at
which they are made.
- n seconds after any update
- Specifies the number of seconds to wait after an update before
incrementing the serial number.
- or after n updates are made
- Specifies the number of updates to be made before incrementing the serial
number.
These push buttons are available on the Notify Servers tab:
- Add
- Puts the specified item into the corresponding list box.
- Remove
- Deletes the selected item or items from the list box.
- OK
- Retains the configuration data in this notebook and closes the notebook.
- Cancel
- Cancels any actions taken in this notebook and closes the notebook.
- Help
- Displays information about the current notebook page.
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