# NSRP Monitor - Interface

With NSRP, you can monitor certain objects, such as interfaces, zones, and tracked IP address, to determine failover of the device or of a VSD group. When monitoring physical interfaces, NSRP checks that the physical ports are active and connected to other devices.

Each monitored object has a configurable failure weight. You can set the object failure weight at any value between 1 and 255. The default failure weight for monitored objects is 255. When the total weight for all monitored objects exceeds the monitor failover threshold (also 255), either a VSD group or the device fails over to the backup device.

Note: Objects that are monitored for a VSD group are independent from the objects monitored for the device. That is, you can configure a specific set of objects, weights, and thresholds for a VSD group and a different set for a device. You can also configure independent sets of monitored objects for different VSD groups. For example, you can configure the same monitored objects for two VSD groups with different weights and thresholds specified for each VSD group for the object.

The following two types of table can appear on this page:

- VSD Group-Whole Box – This table contains a list of monitored interfaces and their weights that can contribute toward a device failover.

- VSD Group-All – This table contains a list of monitored interfaces and their weights that can contribute toward the failover of just the specified VSD group to another device.

To set failure weights for interfaces, click Edit Interface. For more information, see Interface Weights.