About dynamic host name and IP addressing
Before making changes to a configuration, read this entire topic.
By default, a NetBackup server assumes that a NetBackup client name is the same as the network host name of the client computer. This assumption makes it difficult to back up any clients that have network host names that might change. For example, a computer that plugs into a LAN and obtains IP addresses from a DHCP server. Or, a remote machine that dials into a PPP server. Use dynamic host name and IP addressing to define NetBackup clients that do not have fixed IP addresses and host names.
If dynamic addressing is used, remember that the NetBackup servers still require fixed IP addresses and host names.
All clients that are configured to use dynamic addressing and host names must trust each other, similar to the NetBackup altnames feature.
The following process is required to support the configurations that use dynamic IP addressing for NetBackup.
Table: Process to support the configurations that use dynamic IP addressing for NetBackup
Action | Process details/requirements |
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Configure the network to use a dynamic IP addressing protocol like DHCP. | NetBackup requires that IP addresses of clients have a network host name. (On Windows) Be sure to define network host names for the range of dynamic IP addresses in the hosts file and (or) DNS on the network. (On UNIX) Be sure to define network host names for the range of dynamic IP addresses in the hosts file, NIS, and (or) DNS on the network.
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Determine the NetBackup client names for the computers that have dynamic IP addresses and network host names.
| These NetBackup client names are used in other steps. Each NetBackup client must have a unique NetBackup client name. The NetBackup client name that is assigned to a client is permanent.
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Make changes on the primary server, as described.
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Make changes on each dynamic NetBackup Windows client, as described.
| In the NetBackup Administration Console, in the left pane, click NetBackup Management. On the File menu, click Backup, Archive, and Restore. On the File menu, click NetBackup Client Properties. In the NetBackup Client Properties dialog box, select the General tab. Enter the correct NetBackup client name for the computer in the text box.
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On the primary server, enable the Announce DHCP Interval option, as described.
| In the NetBackup Administration Console, in the left pane, expand NetBackup Management > Host Properties > Clients. Double-click on the Windows client(s) in the right pane to open the Client Properties window. In the Client Properties window, in the left pane, expand Windows Client > Network. In the right pane, check the Announce DHCP Interval check box.
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Make changes on each dynamic NetBackup UNIX clients, as described.
| Modify the bp.conf file to include a CLIENT_NAME entry with the correct NetBackup client name for the computer. Configure the system to notify the primary server of the computer's NetBackup client name and current network host name during startup. The bpdynamicclient command is used to notify the primary server. Configure the system to notify periodically the primary server of the computer's NetBackup client name and current network host name.
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