Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010 Configuration Manual page 350

JUNOSe 11.1.x Quality of Service Configuration Guide
host1#show qos queue-thresholds egress-slot 9 region 7
region 7 (28MB - 32MB) oversubscription 80%
queue-profile
-------------
default
video
multicast
internet
Region 7 has 2000 IP users, each with four queues. Each of the four queues use
default queue profiles.
To display the queue thresholds in the multicast queue profile:
host1#show qos queue-thresholds egress-slot 9 queue-profile multicast
queue-profile multicast 2000 queues
region
------
The multicast queue profile is configured with a committed length of 10,000 minimum
and 20,000 maximum. When in regions 0–4, these queues would normally get more
memory than the 20,000 byte maximum requested. In this case, the queue is limited
to the maximum, and any excess memory is redistributed to other queues. Region
5 does not have enough memory to honor the 20,000-byte maximum requested.
Although a 20,000 byte maximum was requested, the router provisions memory in
128 byte blocks, rounded up or down per each request; 20,096 bytes is 157 blocks
of 128 bytes.
In region 6, memory is strictly partitioned, and neither the minimum nor maximum
request is honored. Instead, each multicast queue is given a fair share of the queue
length so that aggressive bandwidth consumers cannot starve out moderate traffic
consumers.
In region 7, memory is underprovisioned to allow queues to drain and to avoid
starvation that occurs when egress buffer memory fills completely.
To display the queue thresholds for video queues:
host1#show qos queue-thresholds egress-slot 9 region 0
region 0 (0MB - 4MB) oversubscription 3330%
queue-profile
-------------
default
video
318
Monitoring Queue Thresholds
exceeded conformed
length length
-------- ---------
896
896
896
896
egress exceeded
memory length
----------- --------
0 0MB - 4MB 5120
1 4MB - 8MB 5120
2 8MB - 12MB 5120
3 12MB - 16MB 5120
4 16MB - 20MB 5120
5 20MB - 24MB 1280
6 24MB - 28MB 1152
7 28MB - 32MB 896
exceeded conformed
length length
-------- ---------
33664
67328
committed queue
length count
--------- -----
1792 3456 2000
1792 3456 2000
1792 3456 2000
1792 3456 2000
conformed committed
length length
--------- ---------
10112 20096
10112 20096
10112 20096
10112 20096
10112 20096
2560 10112
2176 4224
1792 3456
committed queue
length count
--------- -----
67328 134656 2000
134656 269184 2000
total
committed
memory
---------
6912000
6912000
6912000
6912000
total
committed
memory
---------
40192000
40192000
40192000
40192000
40192000
20224000
8448000
6912000
total
committed
memory
---------
269312000
538368000