| 15.3 |  | Preparation for PDM |
| 15.3.3 |  | Configure an existing PIX Security Appliance to use PDM |

| If an administrator wishes to install PDM on a PIX Security Appliance that has an existing configuration, it may be necessary to restructure the configuration from the PIX Security Appliance CLI before installing PDM in order to obtain full PDM capability. There are certain commands that PDM does not support in a configuration. If these commands are present in the configuration, then the administrator will only have access to the Monitoring tab. This is because PDM handles each PIX Security Appliance command in one of the following ways:

- Parse and allow changes for supported commands
- Parse and only permit access to the Monitoring tab for unsupported commands
- Parse without allowing changes for commands that PDM does not understand but handles without preventing further configuration
- Display in the unparseable command list for commands PDM does not understand but handles without preventing further configuration