Comtech EF Data CDM-625 - Page 449

CDM-625 Advanced Satellite Modem Revision 13
Quality of Service (QoS) MN-CDM625
20–11
QoS Example 6
1. Max-Pri Layer 3 QoS mode is selected.
2. Modem Tx bandwidth is set to 2048 Kbps (E1 rate).
3. The Max-Pri QoS rules are configured as follows:
Index Protocol
VLAN
Range
TOS
Src IP/
mask
Dest
IP/
mask
Min Src
Port
Max
Src
Port
Min
Dst
Port
Max
Dst
Port
Max
BW
Priority Filter WRED
1 UDP 0-4094 255 ***/* ***/* 0 65535 0 65535 644 1 N N
2 TCP 0-4094 255 ***/* ***/* 0 65535 0 65535 99999 2 N N
3 HTTP 0-4094 255 ***/* ***/* 0 65535 0 65535 99999 3 N N
4 Def 0-4094 255 ****/* ***/* 0 65535 0 65535 99999 9 N N
4. The input data streams are as follows:
Stream Protocol VLAN Range TOS Src IP Dest IP Src Port Dest Port
Steam Data
Rate
1 UDP 0-4094 255 ***/* ***/* *** *** 1024
2 TCP 0-4094 255 ***/* ***/* *** *** 1024
3 HTTP 0-4094 255 ***/* ***/* *** *** 1024
4 IP 0-4094 255 ***/* ***/* *** *** 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
Layer 3 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 380 Kbps
3 3 1024 Kbps 380Kbps 0 Kbps
4 9 64 Kbps 0 0 Kbps
Total ► 3136 Kbps 2048 Kbps 0 Kbps