Configuring Traffic Shaping Rate Enforcement Example

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Perform these steps to configure FRTS rate enforcement:

Step 1 Define a map class and enter map class configuration mode, as follows:

map-class frame-relay map-class-name Step 2 Define the rate enforcement parameters to use, as follows:

[no] frame-relay traffic-rate average [peak]

■ average is the "average rate" (equivalent to setting CIR).

(equivalent to CIR + Be/Tc = CIR(1 + Be/Bc) = CIR + EIR).

If the peak value is not configured, the peak rate will default to the average value configured.

For SVCs, the configured peak and average rates are converted to the equivalent CIR, Be, and Bc values for use by SVC signaling.

■ The frame-relay traffic-rate command configures all of the traffic-shaping characteristics of a VC (CIR, Bc, Be) in a single command. It is much simpler than setting each parameter individually in the map class, but it does not provide the additional granularity. Only one command format—either traffic rate or setting individual values for CIR, Be, or Bc—will be accepted in one map class. The user is warned when entering a second command type that the previous traffic rate is being overwritten.

Step 3 Enable both traffic shaping and per-VC queuing for all VCs (PVCs and SVCs) on a Frame Relay interface, as follows:

frame-relay traffic-shaping

For VCs where no specific traffic-shaping or queuing parameters are specified, the values are inherited from the parent interface; otherwise, a default set of values is used.

Step 4 Associate a map class with an interface or subinterface, as follows: frame-relay class name

Each VC created on the interface or subinterface inherits all of the relevant parameters defined in the Frame Relay class name. For each VC, the precedence rules are as follows:

■ Use a map class associated with the VC, if it exists.

■ If not, use a map class associated with the subinterface, if it exists.

■ If not, use a map class associated with the interface, if it exists.

■ If not, use the default parameters.

Step 5 (Optional) Apply a map class to a specific DLCI for which a Frame Relay map statement exists, as follows:

frame-relay interface-dlci dlci [ietf | cisco] class name

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