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shape average values in a policy map. megabits to bps conversion

keithsauer507
Level 5
Level 5

I have a WAN link that is 10 meg and we are responsible for shaping it so packets are not lost end to end.

 

For 10 meg if I do shape average 10000000 this seems to give me good consistant performance around 9.6 mbps using JPerf between sites.

But this value is bits per second, and if the site link is really 10mbps, well isn't the conversion between 10 megabits per second equal to 10485760 bits per second?

 

If I put shape average 10485760 Jperf comes down a bit around 7 - 8 Mbits/sec so perhaps the telco is dropping packets.

 

I just wanted to understand the math involved in this shape command.

 

Cisco 2811 12.4(25g) ADVIPSERVICESK9-M

 

 

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