QoS Behavior Differences

The implementation of QoS is similar in all switches but there are some differences as summarized in the following table.

QoS

Functionality

Ingress traffic

Port-rate limiting

Note:

This does not apply to VSP 7400 Series.

Egress traffic

Shaping

Egress queuing CoS 0–5

WRR

Classification

No routed packet classification

Internal QoS derivation for ingress Layer 3 trusted port

Always derived from DSCP

Automatic QoS

Always derived from DSCP

For QoS scaling and filter scaling information, see VOSS Release Notes.