Global Settings for DSLB Farms #

These are the global settings used to configure the DSLB farm. See a detailed description of each field below this image.

Name. A descriptive identifier for the farm. To modify this value, you must first stop the farm. Ensure the new name is unique to avoid configuration conflicts.
Virtual IP. The virtual IP address to which the farm will bind and accept incoming connections. Ensure the new virtual IP is not already in use.

Note the buttons in the upper right corner:

These icons allow you to restart or start/stop the farm (depicted as green triangle/square icons).

Services for DSLB Farms #

To control data and connection behavior, the following options have been developed to configure the uplink load balancing services.

Load balancing scheduler. Determines how traffic is scheduled to a specific farm. The scheduler directs traffic based on either the Weight or Priority of the backend.

• Weight: Distributes connections in a linear fashion based on assigned weights to each backend. Requests are routed using a probabilistic algorithm according to the defined weights.
• Priority: Routes connections to the most available farm. This means the farm with the highest functionality in terms of status and health manages the traffic. If one server goes offline, connections switch to the next server with the highest priority. This method allows building an active-passive cluster service with physical servers.

Regarding the Backends section, the DSLB farm profile allows configuring the following properties for real servers:

Alias. A name used to easily identify a backend farm if it has been configured.
IP. The IP address of the backend. In the case of DSLB, this would typically be the router’s IP address.
Interface. The physical network interface directly connected to the router.
Priority. A numeric value representing the availability status of a server. Values range from 1 to 9, where lower values indicate higher priority.
Weight. A value indicating the load a server can handle. This is particularly useful if the weight algorithm is enabled. Higher weights mean more connections are directed to that backend. The default weight value is 1, and acceptable values range from 1 to 9.
Actions. Available actions for each backend include:

• Add Backend. Opens the form to add a new real server to the farm.
• Edit. Modifies specific details of the real server.
• Delete. Removes the specified real server from the virtual service.

IPDS for DSLB Farms #

This section allows you to enable IPDS rules for DSLB farms. The list displays various types of protections with select boxes to enable them. For detailed information, refer to the IPDS > Blacklists rules, IPDS > DoS rules or IPDS > RBL rules documentation.

For each type of IPDS rule —Blacklists, DoS, and RBL— there are two lists: Available and Enabled. Each table includes a chain icon that links to its respective IPDS section.

In the Available list, all rules of the same type that can be applied to the farm are listed. In the Enabled list, rules currently applied to the farm are displayed, along with a status indicator for each rule: red for stopped and green for running.

Clicking on a rule name allows you to adjust its parameters or start/stop the rule. Note that new rules cannot be created from this farm view; you must do so through the IPDS section.

To add rules, select desired rules and click the single arrow to move them, or hold Shift to select multiple rules and then click the single arrow. Click the double arrow to add all available blacklists.

To delete one or more rules, select them and click on the left arrow or click on the double arrow to remove all.