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limiting egress traffic - CoS - is failling
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limiting egress traffic - CoS - is failling
I have setup CS724T switch, and followed the document:
Rate Limiting / Traffic Shaping
I only need to use 5 ports.
Internet connected with 1 Gbit to port 1 and CoS = 0 and the other 4 port as follows.
I have made the CoS values like this
port - wanted - measured - CoS value
port 22 500 Mbit - down 8,2 Mbps - CoS 8000
port 21 350 Mbit - down 5,64 Mbps - CoS 5600
port 20 80 Mbit - down 1,25 Mbps - CoS 1280
port 19 70 Mbit - down 1,12 Mbps - CoS 1120
If 1 Gbps = 16000 then 500 Mbit must be 8000 etc.
With 1 Gbps on port 1 and CoS = 0, and a PC connected to the other ports one by one, I had the down load written above.
Then I took one port and the CoS as follows, and got the downloads
port 22 CoS 8000 - Download 4.65 Mbps
port 22 CoS 12000 - Download 11,37 Mbps
port 22 CoS 16000 - Download 15,15 Mbps
Then I tried with port 1 still CoS=0, and the changed the download port 22 to CoS = 0
And now Download was 1 Gbit
I also tried change CoS a factor 10, and result looks like the same.
port 21 - down 5,64 Mbps - CoS 5600
port 21 - down 0,56 Mbps - CoS 560
Looks like the values I get is around 60-64 times to small
wanted 500 Mb got 8.2 that gives 500/8,2 equal 61
70 Mbit / 1,12 = 62,5.
Can someone explain how I get the right value. Max CoS number is 16346, and it gives around 16 Mbps.
I should be around 1.000.000 to give me 1 Gbps