Monitoring Queue Thresholds - Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010 Configuration Manual

JUNOSe 11.1.x Quality of Service Configuration Guide
Table 35: show traffic-class-group Output Fields (continued)
Related Topics

Monitoring Queue Thresholds

Display the color-based thresholds for queues on each egress slot.
Purpose
Showing queue thresholds by queue profile shows buffer memory information for
each queue profile and, within that profile, shows the thresholds for each region.
In addition, showing queue thresholds by region organizes the buffer memory
information by queue region and, within each region, shows the buffer allocations
for each queue profile.
To display the color-based queue thresholds for each of the 2000 video queues when
Action
8000 total queues are configured:
host1#show qos queue-thresholds egress-slot 9 queue-profile video
queue-profile video 2000 queues
region
------
As shown, when all of the egress memory in use is between 0 MB and 4 MB, each
video queue can queue 139,648 bytes of committed traffic. Because the default
conformed fraction is 50 percent and the default exceeded fraction is 25 percent,
half of the committed length, or 69,888 bytes, can be queued before conformed
traffic is dropped, and one quarter of the committed length, or 34,944 bytes, can be
queued before exceeded traffic is dropped. While memory fills, the video queues are
given progressively smaller amounts of memory. For example, when 28 to 32 MB
of buffer memory is in use, each video queue is limited to 3456 bytes. While memory
316
Monitoring Queue Thresholds
Field Name
traffic-class
Referenced in qos-profiles
Referenced by QoS profiles
Configuring Traffic-Class Groups That Define Service Levels on page 15
show traffic-class-group
egress exceeded
memory length
----------- --------
0 0MB - 4MB 34944
1 4MB - 8MB 24448
2 8MB - 12MB 14080
3 12MB - 16MB 7040
4 16MB - 20MB 5248
5 20MB - 24MB 1280
6 24MB - 28MB 1152
7 28MB - 32MB
Field Description
Name of the traffic class
Number of times group is referenced by QoS profiles
QoS profiles that reference this traffic class
conformed committed
length length
--------- ---------
69888 139648
48896 97792
28032 55936
14080 28032
10496 20992
2560 5120
2176 4224
896 1792 3456
total
committed
memory
---------
279296000
195584000
111872000
56064000
41984000
10240000
8448000
6912000