Comtech EF Data CDM-760, Инструкция по установке и эксплуатации

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Appendix K Revision 4
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
K–8
Step 3 – The leftover 24000 kbps is available for Priority 4 queues (this example specifies no
Priority 3 queues). The Ingress DR in the Priority 4 queues is 28000 kbps. Because the available
bandwidth is only 24000 kbps, the bandwidth is therefore shared as per the configured weights.
The total weights are (2+4) = 6.
Step 4 – Calculate each bandwidth share, based on the total weights (6) and bandwidth
availability (24 000 kbps):
•
Q3 = 24000 * (2/6) = 8000 kbps
•
Q4 = 24000 * (4/6) = 16000 kbps
K.4.2.3.2 Example 2
•
Select Min/Max as the QoS Mode.
• Configure each queue with minimum bandwidth (Min BW), maximum bandwidth (Max BW),
and weight as shown in Table K-6 .
•
The total available bandwidth is 30000 kbps.
Calculate each individual allocated kbps.
Table K-6. Example 2 – QoS Classification
Queue Min BW (kbps) Max BW (kbps)
Delta Max BW
(Max-Min)
(kbps)
Weight Allowed BW
Q1 2000 4000 2000 9 – –
Q2 4000 8000 4000 8 – –
Q3 6000 16000 8000 7 – –
Q4 8000 8000 0 6 – –
Total ► 20000 40000 14000 30 30000
Table K-7. Example 2 Solution – Calculated BW Allocation
Queue
1
st
Round 2
nd
round N
th
round Final
kbps
Weight Given Leftover Weight Given Leftover Weight Given Leftover
Q1 9 3750 1750 – – – – – – – – – – – – 2000
Q2 8 3334 – – 8 934 268 – – – – – – 4000
Q3 7 2916 – – 7 816 – – 7 268 – – 4000
Q4 – – – – – – – – – – – – – – – – – – – –
Total ► 24 10000 1750 15 268 7 0 0 10000
Table K-7
displays the solution for Example 2.