3Com 3500 - Manual (Page 268)

268 C HAPTER 9: B RIDGE - WIDE P ARAMETERS
3500
✓ 9000
✓ 9400
✓
3900
✓
9300
bridge cos summary For CoreBuilder 9000: Applies to Layer 2 switching modules only.
Displays whether Class of Service (CoS) is enabled or disabled; shows how
the eight possible priority values are assigned (or, if CoS is disabled, how
they were last assigned) to the two queues; and shows the rate limit that
exists on the high priority queue (queue 1).
Valid Minimum Abbreviation
b c s
Important Considerations
■
By default, CoS is enabled and the eight priority values (traffic classes
0 – 7) are divided between the two queues in accordance with IEEE
802.1p recommendations — that is, queue 1 (high priority) has classes
4, 5, 6, and 7 and queue 2 (low priority) has classes 0, 1, 2, and 3.
■
If CoS is disabled (indicated at the top of the display), the display
reflects the most recent configuration even though it is no longer
active.
Options
Fields in the Bridge CoS Summary Display
Prompt Description Possible Values [Default]
Queue
index
number Number of the queue for
which you want to see
information
■
1
■
2
■
all
–
Field Description
Queue Number of the queue. Queue 1 is always the high priority
queue. Queue 2 is always the low priority queue.
Rate limit Percentage of traffic allowed on the high priority queue.
See the Implementation Guide for your system for more
information about the rate limit option.
Traffic classes Priority values assigned to each queue. The IEEE 802.1p
standard specifies eight possible values (0 – 7), each of
which is intended to signify a certain kind of traffic.