Rate-limit

Unanswered Question
Aug 8th, 2008

From the statement below,the normal and max burst(2000 2000),are these parameters set up arbitrary or by calculation?Please advise

rate-limit input access-group 120 360000 2000 2000 conform-action

transmit exceed-action drop

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rkhalil Fri, 08/08/2008 - 13:37

We calculate as follows...as specifications of Cisco.

Bits per second = MBits*1000000

Normal burst bytes = (Bits per second)/8*1,5

Maximum burst bytes = (Normal burst bytes)*2

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Regards,

Raul

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mukendi Mon, 08/11/2008 - 00:33

Hi Raul,

You are right,your answer can be verified by the statement below,keep it up!

rate-limit output 128000 24000 48000 conform-action transmit exceed-action drop

zamribesar Tue, 08/19/2008 - 07:28

So, if we have 155 Mbps, then it will be:

Bits per second = MBits*1000000 = 155000000

Normal burst bytes = (Bits per second)/8*1,5 = 29062500

Maximum burst bytes = (Normal burst bytes)*2 = 58125000

e.g:

interface gigabitEthernet 0/3

rate-limit input 155000000 29062500 58125000 conform-action transmit exceed-action drop

rate-limit output 155000000 29062500 58125000 conform-action transmit exceed-action drop

-zamri-

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