Task 7.1 - 7.3

Hello All,

First, is there a reason why we use the rate-limit interface command as opposed to traffic policing in MQC?

Second, shouldn't all of the burst values be divided by 8 in order to convert them to bytes intead of bit values?

Task 7.1

Rack1R5(config-if)#rate-limit input access-group 100 2500000 (bits) 39062 (bytes) 39062 (bytes) etc...

Rack1R5(config-if)#rate-limit input access-group 100 7000000 (bits) 109375 (bytes) 109375 (bytes) etc...

Thanks!!

Comments

  • Hello,

     

    Can anyone explain why we should use rate limit here?

    And also the bc be values shown in SG seems incorrect - Can anyone confirm?

     

    Regards,

    John

  • Hello,

    I think the formula used here isn't correct. According to the DOCCD the fomula for Normal and Exceeding Burst are as follow :


    normal burst = configured rate * (1 byte)/(8 bits) * 1.5 seconds
    extended burst = 2 * normal burst

     

    =>INE answer:

    rate-limit input access-group 100 2496000 312500 312500 conform-action
    set-mpls-exp-imposition-transmit 2 exceed-action continue
    rate-limit input access-group 100 7000000 312500 312500 conform-action
    set-mpls-exp-imposition-transmit 0 exceed-action drop  => Ok but normal and Exceed burst will never be used as 7000000 is greater than 312500 bytes or (2.5Mbps)



    => According to above formula :
    rate-limit input access-group 100 2496000 468750 468750 conform-action
    set-mpls-exp-imposition-transmit 2 exceed-action continue
    rate-limit input access-group 100 2496000 875000 875000 conform-action
    set-mpls-exp-imposition-transmit 0 exceed-action drop

    Maximum autorised burst 7Mbps = 875000bytes or 7000000/8

    Could someone from INE provide some directions as per the logic calculation used in here.

    Thanks,

    Kamal.

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