Comtech EF Data CDM-570A - Manual (Page 565)

CDM-570A/570AL Satellite Modem with Optional Packet Processor MN-CDM570A
Appendix L Revision 2
L–5
4. The input data streams are as follows.
Stream Protocol Src IP Dest IP Src Port Dest Port Steam Data Rate
1 UDP ***/* ***/* *** *** 1024
2 TCP ***/* ***/* *** *** 1024
3 HTTP ***/* ***/* *** *** 1024
4 IP ***/* ***/* *** *** 64
QUESTION: What are the total output data rates and the individual stream data rates?
ANSWER: The individual stream data rates are as follows.
QoS
Rule
QoS Priority Input Data Rate QoS Output Data Rate
Remain Data Rate (After
Serving the Priority Queue)
1 1 1024 Kbps
644 Kbps
due to max clipping
1404 Kbps
2 2 1024 Kbps 1024 Kbps 304 Kbps
3 3 1024 Kbps 380Kbps 0 Kbps
4 9 64 Kbps 0 0 Kbps
Total N/A 3136 Kbps 2048 Kbps 0 Kbps
L.1.2 Min/Max (Minimum/Maximum Bandwidth) QoS Mode
In Min/Max mode, up to 32 QoS rules can be configured using source/destination IP subnet,
Layer 3 source/destination port range, and protocol (FTP, UDP, RTP, etc.). For each created rule,
you can also set the QoS treatment, such as guaranteed minimum bandwidth, maximum
clipping bandwidth, WRED enable or disable, and filter rule.
Minimum Bandwidth – Minimum specification that allows a committed information rate (CIR)
to be applied to user-defined classes of traffic; otherwise, the default of no minimum bandwidth
can be selected.
Maximum Bandwidth – This can be assigned to a flow to restrict the Maximum Bandwidth that
any particular flow will utilize; otherwise, the default of no bandwidth restriction can be
selected.
WRED – The Min/Max QoS mode allows selection of Weighted Random Early Detection (WRED).
When WRED is enabled for a specific queue, QoS randomly drops packets after reaching 50% of
the QoS queue.
Filtering – Any specific flow can be designated as filtered (see Max/Pri QoS Mode).
When the FILTER option is enabled for a rule, QoS provides the ability to filter the packet
completely.