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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 52 Configuring QoS
Configuring QoS on the Switch
When configuring the 1p7q8t ports, note the following:
• Queue 1 is the lowest-priority standard transmit queue.
• Queue 7 is the highest-priority standard transmit queue.
• When configuring each standard transmit queue, note the following:
–
The first percentage that you enter sets the lowest-priority threshold.
–
The second percentage that you enter sets the next highest-priority threshold.
–
The eighth percentage that you enter sets the highest-priority threshold.
When configuring the 1p3q8t ports, note the following:
• Queue 1 is the low-priority standard transmit queue.
• Queue 2 is the medium-priority standard transmit queue.
• Queue 3 is the high-priority standard transmit queue.
• When configuring each standard transmit queue, note the following:
–
The first percentage that you enter sets the lowest-priority threshold.
–
The second percentage that you enter sets the next highest-priority threshold.
–
The eighth percentage that you enter sets the highest-priority threshold.
When configuring the 1p2q2t ports, note the following:
• Queue 1 is the low-priority standard transmit queue.
• Queue 2 is the high-priority standard transmit queue.
• When configuring each standard transmit queue, note the following:
–
The first percentage that you enter sets the low-priority threshold.
–
The second percentage that you enter sets the high-priority threshold.
When configuring the 1p3q1t ports, note the following:
• Queue 1 is the low-priority standard transmit queue.
• Queue 2 is the medium-priority standard transmit queue.
• Queue 3 is the high-priority standard transmit queue.
• When you configure each standard transmit queue, the single percentage that you enter sets the
threshold.
When configuring the 1p2q1t ports, note the following:
• Queue 1 is the low-priority standard transmit queue.
• Queue 2 is the high-priority standard transmit queue.
• When you configure each standard transmit queue, the single percentage that you enter sets the
threshold.
When configuring thresholds, note the following:
• The thresholds are all specified as percentages ranging from 0–100. A value of 10 indicates a
threshold when the buffer is 10 percent full.
• You can configure both the low WRED threshold and the high WRED threshold. You must set the
low threshold to a lower percentage than the high threshold.
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