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COMPARISON OF QoS FEATURES BETWEEN PFC VERSIONS

Over the years a number of different PFC versions have been released. Table 4 provides a high-level overview of the major differences between

the QoS capabilities of each PFC.

Table 4.

Major Differences Between PFC QoS Capabilities

Feature

ACL Classification

Microflow Policing

Ingress Aggregate Policing

Egress Aggregate Policing

UBRL

Egress DSCP Mutation

Ingress CoS Mutation

Number of QoS ACLs

Number of QoS Masks

Number of QoS Labels

SUMMARY

With the continued convergence of multiple technologies on IP networks, QoS is becoming more important in the successful operation of customer

networks. As a collection of technologies, distinct QoS features can be applied in different combinations to solve an assortment of problems in

a network. The richness of the QoS feature set on the Cisco Catalyst 6500 provides network managers with a means to facilitate convergence and

prioritize mission-critical application data. More importantly, the nature of the Cisco Catalyst 6500 platform means that incremental changes in

QoS features can be accommodated, allowing the platform to grow to meet the new demands of the networks of the future.

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PFC1

PFC2

Yes

16 K

32 K

2 K

4 K

512

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PFC3A

PFC3B

Yes

32 K

4 K

512

4096

PFC3BXL

Yes

32 K

4 K

4096