FORCE_IPADDR_LOOKUP on Windows

Article:HOWTO68196  |  Created: 2012-02-06  |  Updated: 2013-07-18  |  Article URL http://www.symantec.com/docs/HOWTO68196
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How To


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Subject


FORCE_IPADDR_LOOKUP on Windows

The FORCE_IPADDR_LOOKUP configuration option specifies whether NetBackup performs an IP address lookup to determine if two host name strings are indeed the same host. This option uses the following format:

FORCE_IPADDR_LOOKUP = [ 0 | 1 ]

Where:

0

Indicates that no IP address lookup is performed to determine if two host name strings are indeed the same host. They are considered to be the same host if the host name strings compare equally. Or, if a short name compares equally to the short name of a partially or fully qualified host name.

1

Indicates that an IP address lookup is performed if the two host name strings do not match. The lookup determines if they have the same host. The default is to perform an IP address lookup if necessary to resolve the comparison. The IP address lookup is not performed if the host name strings compare equally.

Note:

Use a value of 1 for this option if you have the same host name in two different domains. For example, eagle.abc.xyz and eagle.def.xyz or by using host name aliases.

Many places in the NetBackup Administration Console compare host names to determine if the two are the same host. For example, the File > Change Server command.

The IP address lookup can consume time and result in slower response time. However, accurate comparisons are important.

No IP address lookup is necessary if the host name is specified consistently in the NetBackup Administration Console logon dialog box. It must match how the host names are configured in NetBackup. Host names are identified in the server list that is found in the Servers host properties. On UNIX systems, the host names also appear in the bp.conf file.

Using host names eagle and hawk, the following describes how this option works:

FORCE_IPADDR_LOOKUP = 0

Comparisons of the following result in no IP address lookup. The hosts are considered to be the same host.

eagle and eagle
eagle.abc.def and eagle.abc.def
eagle.abc and eagle.abc.def
eagle and eagle.abc.def
eagle and eagle.anything

The hosts are considered to be different for any comparisons of short, partially, or fully qualified host names of eagle and hawk regardless of aliases.

FORCE_IPADDR_LOOKUP = 1

Comparisons of the following result in no IP address lookup. The hosts are considered to be the same host.

eagle and eagle
eagle.abc and eagle.abc
eagle.abc.def and eagle.abc.def

In addition to all comparisons of eagle and hawk, the following result in an IP address lookup. The comparison determines if the hosts are indeed the same host.

eagle.abc and eagle.abc.def
eagle and eagle.abc.def
eagle and eagle.anything

See Runtime configuration options for NetBackup-Java and Java Windows Administration Console on Windows


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Article URL http://www.symantec.com/docs/HOWTO68196


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