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CONFIGURATION EDITOR
Burst Control
Bc-- Committed Burst Size
Be-- Excess Burst Size
DE-- Discard Eligible
Enable Excess Burst Control
Mark Frame With DE Bit
Measurement Period
T-- Measurement Interval
Values for Configured Ports
Virtual-Port Specific Overrides
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The unit optionally limits Frame Relay traffic depending upon committed burst rate Bc and excess burst rate Be parameters.
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Some carriers assume end users will limit their traffic to confirm to these parameters, and discard traffic offered in excess of rate Bc + Be regardless if the network is congested.
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The Bc and Be parameters are definable for each virtual circuit. Global defaults may be used for virtual circuits not requiring unique parameter assignments.
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The following parameters are used to control the traffic on a virtual circuit:
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DE-- Discard Eligible
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Determines whether the traffic offered in excess of the committed rate will be flagged as discard eligible.
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Bc-- Committed Burst Size
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Defines how many bits will be transmitted in measurement interval T before it is flagged as discard eligible.
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Be-- Excess Burst Size
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Defines how many bits in excess of Bc will be transmitted in measurement interval T. Some carriers discard traffic offered at a rate greater than Bc + Be regardless if the network is congested.
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T-- Measurement Interval
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Defines the interval in seconds for committed and excess bit transmission.
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Enable Excess Burst Control
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This switch defines whether or not the unit limits throughput on a per-PVC basis to the configured Excess Burst Size in the excess burst measure time period.
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Range: Enabled or Disabled
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Mark Frame With DE Bit
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This switch defines whether or not the unit marks frames with the DE bit.
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If enabled, the unit marks non-urgent priority traffic frames with the DE bit, providing the bandwidth used by a port results in a value greater than the configured bandwidth.
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Range: Enabled or Disabled
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Measurement Period
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This value defines the time period for calculating throughput (Tc), derived from the committed burst rate (Bc) and the committed information rate (CIR).
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Time Period Tc = Bc / CIR
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Range: 1 -- 5 seconds
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Values for Configured Ports
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This feature enables you to adjust the burst rate parameters for each configured frame relay port.
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Virtual-Port Specific Overrides
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This feature enables you to adjust the burst rate parameters for each configured virtual port.