Cisco WS-C4003 Software Guide - Page 226
Software Requirements, QoS Default Configuration, Configuring QoS
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Software Requirements Chapter 14 Configuring QoS Software Requirements QoS requires supervisor engine software release 5.2 or later releases. Use the show port capabilities command to determine the specific QoS support for a module. QoS Default Configuration Table 14-1 shows the QoS default configuration. Table 14-1 QoS Default Configuration Feature Default Value QoS global enable state Disabled Switch CoS value Transmit queue drop threshold percentages CoS value-to-drop threshold mapping 0 Threshold 1:100%1 Transmit queue drop threshold 1: CoS 0-71. CoS value-to-transmit queue mapping Transmit queue 1: CoS 0-7 Transmit queue 2: None configured 1. Non-user-configurable Configuring QoS These sections describe how to configure QoS: • Enabling QoS Globally, page 14-5 • Configuring the Default CoS Value for the Switch, page 14-5 • Reverting to the Default Switch CoS Value, page 14-5 • Mapping CoS Values to Transmit Queues and Drop Thresholds, page 14-6 • Reverting to the Default CoS-to-Transmit Queue and Drop Threshold Mapping, page 14-6 • Displaying QoS Information, page 14-7 • Reverting to QoS Defaults, page 14-7 • Disabling QoS, page 14-7 Note Because entering some QoS commands disables and then reenables ports (which can cause spanning tree topology changes), enter QoS commands only when necessary. 14-4 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 78-12647-02
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