41-99
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 41 Configuring PFC QoS
Configuring PFC QoS
<...Output Truncated...>
Receive queues [type = 1q4t]:
<...Output Truncated...>
queue tail-drop-thresholds
--------------------------
1 60[1] 100[2] 40[3] 100[4]
<...Output Truncated...>
Router#
Mapping QoS Labels to Queues and Drop Thresholds
These sections describe how to map QoS labels to queues and drop thresholds:
Note
Enter the
show queueing interface
{
ethernet
|
fastethernet
|
gigabitethernet
|
tengigabitethernet
}
slot/port
|
include type
command to see the queue structure of a port.
These sections describe how to map QoS labels to queues and drop thresholds:
•
Queue and Drop Threshold Mapping Guidelines and Restrictions, page 41-99
•
Configuring DSCP-Based Queue Mapping, page 41-100
•
Configuring CoS-Based Queue Mapping, page 41-105
Queue and Drop Threshold Mapping Guidelines and Restrictions
When mapping QoS labels to queues and thresholds, note the following information:
•
When
SRR
is enabled, you cannot map any CoS values or DSCP values to strict-priority queues.
•
Queue number 1 is the lowest-priority standard queue.
•
Higher-numbered queues are higher priority standard queues.
•
You can map up to 8 CoS values to a threshold.
•
You can map up to 64 DSCP values to a threshold.
•
Threshold 0 is a nonconfigurable 100-percent tail-drop threshold on these port types:
–
1p1q0t
(receive)
–
1p1q8t
(receive)
–
1p3q1t
(transmit)
–
1p2q1t
(transmit)
•
The standard queue thresholds can be configured as either tail-drop or WRED-drop thresholds on
these port types:
–
1p1q8t
(receive)
–
1p3q1t
(transmit)
–
1p3q8t
(transmit)
–
1p7q1t
(transmit)
