Cisco WS-C6506 - Page 1265

52-33
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 52 Configuring QoS
QoS Default Configuration
1p1q4t/1p2q2t port receive and
transmit-queue CoS value/drop-threshold
mapping and threshold percentages
• Strict-priority receive queue 1 and
strict-priority transmit queue 1: CoS 5
• Receive queue 1/drop threshold 1 and
transmit queue 1/drop threshold 1:
– CoS 0 and 1
– Transmit queue low and high WRED-drop thresholds: 40% and 70%
• Receive queue 1/drop threshold 2 and
transmit queue 1/drop threshold 2:
– CoS 2 and 3
– Transmit queue low and high WRED-drop thresholds: 70% and 100%
• Receive queue 1/drop threshold 3 and
transmit queue 2/drop threshold 1:
– CoS 4
– Transmit queue low and high WRED-drop thresholds: 40% and 70%
• Receive queue 1/drop threshold 4 and
transmit queue 2/drop threshold 2:
– CoS 6 and 7
– Transmit queue low and high WRED-drop thresholds: 70% and 100%
1p1q0t receive-queue CoS value mapping
• Receive queue 1 (standard) nonconfigurable 100% tail-drop threshold:
CoS 0, 1, 2, 3, 4, 6, and 7
• Receive queue 2 (strict priority): CoS 5
1q8t receive-queue CoS
value/drop-threshold mapping
• Threshold 1: 50% (CoS 0)
• Threshold 2: 50%
• Threshold 3: 60% (CoS 1, 2, 3, 4)
• Threshold 4: 60%
• Threshold 5: 80% (CoS 6 and 7)
• Threshold 6: 80%
• Threshold 7: 100% (CoS 5)
• Threshold 8: 100%
Table 52-3 QoS Default Configuration (continued)
Feature Default Value