Comtech EF Data CDM-625A Installation And Operation Manual page 732

Advanced satellite modem (18 kbps – 25 mbps)

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CDM-625A Advanced Satellite Modem

Layer 3 QoS Min-Max Mode

In Min-Max mode, up to 32 QoS rules can be configurable using source IP subnet, destination IP

subnet, source port range, destination port range, and protocol. For each created rule, you can

also set the QoS treatment, such as guaranteed minimum bandwidth, maximum clipping

bandwidth, WRED enable or disable, and filter rule.

When WRED is enabled for a specific queue, QoS randomly drops packets after reaching 50% of

the QoS queue.

When the FILTER option is enabled for a rule, Layer 3 QoS provides the ability to filter the packet

QoS Example 7

1) Min-Max Layer 3 QoS mode is selected.

2) Modem Tx bandwidth is set to 20 Mbps.

3) The Min-Max QoS rules are configured as follows:

4) The input data streams are as follows:

QUESTION: What are the total output data rates and the individual stream data rates?

In Min-Max QoS mode, other than the default rule, which is configured as Priority 9, all QoS

rules are configured as Priority 8.

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