Process

This section describes the bandwidth management process on a FW.

The FW implements bandwidth management using traffic policies, traffic profiles, and interface bandwidth. Figure 1 shows the bandwidth management process.

• Traffic Profile

  Defines available bandwidth resources that can be assigned to bandwidth management objects.

• Traffic Policy

  Defines the bandwidth management objects and the traffic actions. A traffic policy can reference a traffic profile.

• Interface Bandwidth

  Defines both the upstream and downstream traffic bandwidth values of an interface. If traffic congestion occurs, the FW uses the queue scheduling mechanism to ensure orderly traffic transmission.

Figure 1 Bandwidth management process

The bandwidth management process on a FW is as follows:

1. The FW implements traffic policies to match and classify traffic for multiple traffic profiles. The traffic profiles enable the FW to process traffic as follows:

   • Discard the traffic that exceeds the predefined maximum bandwidth.
   • Limit the number of connections for services.
   • Mark traffic priorities for follow-up queue scheduling.
2. On the inbound interface, if the traffic volume exceeds the inbound interface bandwidth, the FW schedules all traffic based on the forwarding priorities specified in traffic profiles and preferentially forwards the high-priority traffic.
3. On the outbound interface, if the traffic volume exceeds the outbound interface bandwidth, the FW schedules all traffic based on the forwarding priorities specified in traffic profiles and preferentially forwards the high-priority traffic.