8.4 Frame Relay Traffic Shaping
8.4.9 Queuing example
In the Example, the VCs on subinterfaces Serial0.1 and Serial0.2 inherit class parameters from the main interface, namely those defined in slow_vcs. However, the VC defined on subinterface Serial0.2 (DLCI 102) is specifically configured to use map class fast_vcs.

Map class slow_vcs uses a peak rate of 9600 and an average rate of 4800 bits per second. Because BECN feedback is enabled by default, the output rate will be cut back as low as 4800 bytes per second (Bps) in response to received BECNs. This map class is configured to use CQ by using queue-list 1. In the Example, queue-list 1 has three queues, with the first two being controlled by access-list 100 and 115.

Map class fast_vcs uses a peak rate of 64,000 and average of 16,000 Bps. Because BECN feedback is enabled by default, the output rate will be cut back as low as 4800 Bps in response to received BECNs. This map class is configured to use priority queuing using priority-group 2.

Map class slow_vcs uses a peak rate of 9600 and average rate of 4800 Bps. Because BECN feedback is enabled by default, the output rate will be cut back as low as 4800 Bps in response to received BECNs. This map class is configured to use CQ using queue-list 1. In this example, queue-list 1 has three queues, with the first two being controlled by access-lists 100 and 115.

Lab Activity    
  Configure rate enforcement on your Frame Relay network that will use a custom queue list to prioritize traffic before it gets throttled based on protocol and port.