Juniper MEDIA FLOW MANAGER 2.0.2 - ADMINISTRATOR S GUIDE AND CLI, Руководство администратора

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Admission Control 87
Media Flow Manager Administrator’s Guide CHAPTER 3 Media Flow Manager Web-Based Interface
Admission Control > Configure
Click the
Configure
link at left to open configuration options, the Media Flow Controller
Transmit Bandwidth graph still displays at top.
Configure Control Parameters
Configure a
high watermark bandwidth
and low
watermark bandwidth
. See Figure 80 ,
below, for graphic.
This lets you throttle the aggregate bandwidth delivered by the Media Flow Controllers,
ensuring that the publisher does not pay bandwidth overage charges. Watermarks do this by
returning only the default host (vs. the configured host) when the bandwidth usage is too high.
•
High Bandwidth Watermark (Kbps)
— If the current bandwidth measured in the last 20
seconds goes above the set
high watermark
, the Service Director only returns the default
configured host (typically the CDN). This would mean that no new traffic comes to the
Media Flow Controllers while they serve all the current requests.
•
Low Bandwidth Watermark (Kbps)
—If the current bandwidth drops below the set
low
watermark
, the Service Director goes back to normal operation returning hosts based on
the set configuration.
•
Sampling Frequency (Seconds)
—Set how often the monitored Media Flow Controllers
bandwidth data is sampled. By default, the data is sampled every 20 seconds with a 20
second window, meaning bandwidth is calculated every 20 seconds.
Click
Apply
to complete the monitoring control configuration and
Save
at the top of the page
to make changes persistent across reboots.
Figure 80 Admission Control > Configure Page Detail (Configure Control Parameters)
Media Flow Controller nodes monitored
Use this list to remove from monitoring any Media Flow Controller that has been added to the
monitoring list. See
Figure 81 for graphic.
Select the Media Flow Controllers that you want to remove and click
Remove Selected
.
Click
Save
at the top of the page to make changes persistent across reboots.