Chapter 1: Configuration
Configuring quality of service
Page
1-238
Note
CIR settings only apply to the Legacy scheduler. Starting in release 16.1 a new Proportional
scheduler can optionally be enabled via Configuration -> Quality of Service -> Scheduler
setting. If Proportional Scheduler is set, CIR's are not used.
CIR parameters may be configured in the following ways:
•
Web-based management GUI
•
SNMP
•
Authentication Server (RADIUS) - when an SM successfully registers and authenticates, CIR
information is retrieved from the RADIUS server.
Active CIR configuration can be verified via the AP’s Home > Session Status page.
Bandwidth from the SM Perspective
In the SM, normal web browsing, e-mail, small file transfers and short streaming video are rarely rate
limited with practical bandwidth management (QoS) settings. When the SM processes large downloads
such as software upgrades and long streaming video or a series of medium-size downloads, the bucket
rapidly drains, the burst limit is reached, and some packets are delayed. The subscriber experience is
more affected in cases where the traffic is more latency sensitive.
Interaction of Burst Allocation and Sustained Data Rate Settings
If the Burst Allocation is set to 1200 kb and the Sustained Data Rate is set to 128 kbps, a data burst of
1000 kb is transmitted at full speed because the Burst Allocation is set high enough. After the burst, the
bucket experiences a significant refill at the Sustained Data Rate. This configuration uses the advantage
of the settable Burst Allocation.
If both the Burst Allocation and the Sustained Data Rate are set to 128 kb, a burst is limited to the Burst
Allocation value. This configuration does not take advantage of the settable Burst Allocation.
If the Burst Allocation is set to 128 kb and the Sustained Data Rate is set to 256 kbps, the actual rate is
the burst allocation (but in kbps). As above, this configuration does not take advantage of the settable
Burst Allocation.
SM Prioritization
Note
This feature is not supported on PMP 450m.
SM Prioritization provides a way to designate a subset of a PMP sector's SMs with a guaranteed portion
of air interface resources - slots, which are handled first during scheduling. SMs by default are
configured in the SM Prioritization Low Group, and can be configured for the SM Prioritization High
Group if desired.
The selection of which prioritization group each SM is configured in Configuration
-> Quality of
Service tab -> SM Prioritization Configuration on the SM GUI, as shown in
Summary of Contents for PMP 450 AP
Page 51: ...Chapter 1 Configuration Quick link setup Page 1 23 ...
Page 155: ...Chapter 1 Configuration Configuring security Page 1 127 ...
Page 163: ...Chapter 1 Configuration Configuring security Page 1 135 ...
Page 164: ...Chapter 1 Configuration Configuring security Page 1 136 ...
Page 193: ...Chapter 1 Configuration Configuring radio parameters Page 1 165 ...
Page 194: ...Chapter 1 Configuration Configuring radio parameters Page 1 166 ...
Page 195: ...Chapter 1 Configuration Configuring radio parameters Page 1 167 ...
Page 206: ...Chapter 1 Configuration Configuring radio parameters Page 1 178 ...
Page 210: ...Chapter 1 Configuration Configuring radio parameters Page 1 182 ...
Page 636: ...Chapter 5 Troubleshooting Logs Page 5 16 Figure 95 SM Authorization log ...