Network Router User Manual

42-30
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 42 Configuring PFC QoS
PFC QoS Default Configuration
Default Values With PFC QoS Enabled
These sections list the default values that apply when PFC QoS is enabled:
• Receive-Queue Limits, page 42-30
• Transmit-Queue Limit s, page 42-30
• Bandwidth Allocation Ratios, page 42-31
• Default Drop-Threshold Percentages and CoS Value Mappings, page 42-31
Note The ingress LAN port trust state defaults to untrusted with QoS enabled.
Receive-Queue Limits
Transmit-Queue Limit s
Feature Default Value
2q8t Low priority: 80%
High priority: 20%
8q4t Low priority: 80%
Intermediate queues: 0%
High priority: 20%
8q8t Lowest priority: 80%
Intermediate queues: 0%
Highest priority: 20%
Feature Default Value
2q2t Low priority: 80%
High priority: 20%
1p2q2t Low priority: 70%
High priority: 15%
Strict priority 15%
1p2q1t Low priority: 70%
High priority: 15%
Strict priority 15%
1p3q8t Low priority: 50%
Medium priority: 20%
High priority: 15%
Strict priority 15%