Comtech EF Data CDM-760 - Manual (Page 332)

Appendix F Revision 2
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
F–18
specific route that the packet satisfies and has the largest mask (/30). If a packet comes in from
the WAN with a Destination IP Address of 192.168.2.5, it will be routed to 192.168.1.102 using
Route Index #2, as it does not satisfy the more specific Index #3 but does satisfy Route Indexes
#1 and #2, with #2 being more specific.
F.3.2 Quality of Service (QoS)
Appendix K. QUALITY OF SERVICE (QoS)
Quality of Service (QoS) ensures the highest quality of service with minimal jitter and latency for
real-time traffic, priority treatment of mission critical applications, and maximum bandwidth
efficiency.
The High-Speed Packet Processor offers a number of QoS configurations. The supported modes
of QoS are:
• Max/Priority – This QoS mode provides multi-level traffic prioritization with the ability to
limit maximum traffic per priority class. Drain is based on strict priority, so highest priority
traffic will drain before a lower priority drains, either until it is empty or until it meets its
maximum data rate (Max DR).
Similar to Max/Priority mode, Max/Priority with Weighting provides multi-level traffic
prioritization with the ability to limit maximum traffic per priority class. It enables multiple
rules with the same priority, where the drain can be biased rather than Round-Robin. The
configurable weight is a user-specified parameter ranging from 1 to 100; Scheduler will drain
more data from a Weight=8 queue than a Weight=7 queue under the same priority, until the
Max is met.
• Min/Max – This mode provides a Committed Information Rate (CIR) to each user-defined
class of traffic with the ability to allow a higher burstable rate depending on availability.
Once the minimums are met, all Max rates are drained in a Round-Robin manner.
Similar to Min/Max mode, Min/Max with Weighting provides a Committed Information
Rate (CIR) to each user-defined class of traffic with the ability to allow a higher burstable
rate depending on availability. However, once the Minimums are met, the drain with
weighting uses a user-specified parameter in a range from 1 to 100; Scheduler will drain
more data from a Weight=8 queue than a Weight=7 queue until the Max is met.
• DiffServ – This industry-standard method of providing QoS enables seamless co-existence in
networks that implement Differentiated Services.
When using rule-based QoS, you can configure up to 32 different rules based on:
o
TOS
o
Protocol