Cisco WS-C6506 User Manual

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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 52 Configuring QoS
QoS Default Configuration
1p1q8t receive-queue port CoS
value/drop-threshold mapping
• Receive queue 1 (standard) WRED-drop threshold:
CoS 0, 1, 2, 3, 4, 6, and 7:
– Drop threshold 1: CoS 0
Low WRED threshold: 40%
High WRED-drop threshold: 70%
– Drop threshold 2: CoS 1
Low WRED threshold: 40%
High WRED-drop threshold: 70%
– Drop threshold 3: CoS 2
Low WRED threshold: 50%
High WRED-drop threshold: 80%
– Drop threshold 4: CoS 3
Low WRED threshold: 50%
High WRED-drop threshold: 80%
– Drop threshold 5: CoS 4
Low WRED threshold: 60%
High WRED-drop threshold: 90%
– Drop threshold 6: CoS 6
Low WRED threshold: 60%
High WRED-drop threshold: 90%
– Drop threshold 6: CoS 7
Low WRED threshold: 70%
High WRED-drop threshold: 100%
• Receive queue 2 (strict priority): CoS 5
1p2q1t transmit-queue port CoS
value/drop-threshold mapping
• Standard transmit queue 1 (low priority) WRED-drop threshold:
– CoS 0, 1, 2, and 3
– Low WRED threshold: 70%
– High WRED-drop threshold: 100%
• Standard transmit queue 2 (high priority) WRED-drop threshold:
– CoS 4, 6, or 7
– Low WRED threshold: 70%
– High WRED-drop threshold: 100%
• Strict transmit queue 3: CoS 5
With QoS disabled
Runtime—Port based or VLAN based VLAN based
Config—Port based or VLAN based Port based
Port trust state trust-cos (Layer 2 switching engine)
trust-dscp (Layer 3 switching engine)
Receive-queue drop-threshold percentages All thresholds set to 100%
Table 52-3 QoS Default Configuration (continued)
Feature Default Value

Cisco WS-C6506 Specifications

General

Brand	Cisco
Model	WS-C6506
Category	Switch
Language	English