Internal interfaces for OAP modules
An OAP module integrates a front card and a rear card. The front card provides value-added security services, such as firewall, intrusion prevention, and application control. The rear card is responsible for data exchange between the front card and the switch. The rear card communicates with the front card through the internal interface. Table 1 shows the number of internal interfaces on each model of OAP module.
Figure 1: Diagram for the internal interface
When using internal interfaces, follow these guidelines and restrictions:
If you add the internal interfaces on an LST1FW3A1 module to an aggregation group, the aggregation group does not support OAP. For more information, see "Configuring OAP."