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Catalyst 2960 SwitchSoftware Configuration Guide
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AppendixC Recommendations for Upgrading a Catalyst 2950 Switch to a Catalyst 2960 Switch
Feature Behavior Incompatibilities
•QoS
The Catalyst 2960 switch uses different port hardware than the Catalyst 2950 switch, and more QoS
features are offered on the Catalyst 2960 switch. For example, the Catalyst 29 50 switch supports
WRR scheduling, whereas the Catalyst 2960 switch supports SRR scheduling. Also, you must
enable QoS globally on the Catalyst 2960 switch, whereas QoS is enabled by default on the Catalyst
2950 switch. For more information, see Chapter 29, “Configuring QoS.”
•RSPAN
The Catalyst 2950 switch uses an extra port, called the reflector port, for its RSPAN implementation.
This is not necessary in the Catalyst 2960 switch RSPAN implementation. The Catalyst 2960 switch
also supports VLANs as SPAN sources and can forward received packets on SPAN destination ports.
•Multicast
The multicast forwarding decisions on the Catalyst 2960 switch are based on IP addresses. Some
Catalyst 2950 switch workarounds to address platform limitations (such as the ip igmp snooping
source-only-learning global configuration command) are not required on the Catalyst 2960 switch.