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Customizing PVCs

308624-14.10 Rev 01

4-23

To set a PVC normal queue limit of 40, navigate to the prompt for the PVC you

want to edit and enter:

pvc/1/2/51# normal-queue-limit 40

pvc/1/2/51#

The syntax is the same for the high- and low-queue-limit commands.

Committed Burst

The committed burst rate (B

) defines the number of bits the router can transmit

over a specified time interval when congestion occurs. Typically, you should set

this parameter to 1/4 the value of the CIR. However, if this VC is sending frames

larger than 1/4 of the CIR, you should increase the B

value to accommodate that

frame size. You configure this value for each PVC but not for the interface.

To change the committed burst value, navigate to the prompt for the PVC you

want to modify (for example,

box; serial/1/2; frame-relay/1/2; orlando;

pvc/1/2/51

) and enter:

committed-burst

integer

is the number of bits the router can transmit per time interval. The value

can be from 0 to 2,147,483,647 bits. The default is 0.

For example, the following command line sets a committed burst value of 4,000

bits.

pvc/1/2/51# committed-burst 4000

pvc/1/2/51#

Excess Burst

The excess burst rate (B

) combines with the committed burst rate to determine

the maximum number of bits the router can transmit over a specified time interval

when there is no congestion. The excess burst plus the committed burst must be

less than or equal to the line speed. You configure this value for each PVC but not

for the interface.

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Avaya Configuring Frame Relay Services Manual do Utilizador Página 105