CoaxManager
™
User Guide
20
management like CoaxManager) can be set. The default values are set as follows:
•
CAP0 traffic: 2000 msec (used for TCP data traffic)
•
CAP1 traffic: 2000 msec (used for TCP data traffic)
•
CAP2 traffic: 300 msec (used for UDP video/music traffic)
•
CAP3 traffic: 300 msec (used for VoIP traffic)
•
MME traffic: 300 msec (used for Management Messages)
It is recommended not to change TTL values unless you know exactly what you
are doing.
Buffer Allocation, Priority Thresholds
This option determines memory size (buffers) for each of the priorities. When buffers are full, packets are
dropped based on their priority.
Thresholds determining buffers available for each
priority.
Available buffers are managed in terms of a percentage
allocated to each CAP. When the percentage of
allocated buffers exceeded, lower priority packets are
discarded but higher priority is still admitted.
By enabling this option, the packages are stored waiting to be transmitted, but if at any time it exceeds a
certain percentage of occupancy, the packet is discarded leaving room for higher priority packets.
example:
Suppose you have the following prioritization:
Assigned Percentage
Total Percentage
(accumulative)
CAP 0 and higher = 20%
20 %
CAP 1 and higher = 25%
45 %
CAP 2 and higher = 45%
90 %
CAP 3 = 10%
100 %
At any given time:
- If the total number of buffers used for transmission is less than 20% shall be
allowed traffic of all priorities (CAP 0 or better).
- If the total number of buffers used exceeds 45% shall be allowed only packages
or higher priority CAP1 (CAP1, CAP2 or CAP 3).
- If the number of occupied buffers is greater than 90% are permitted only packets
with higher priority than CAP 2, ..., and so on.
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