Cisco Rate-limiting

Posted on 2008-11-08
Last Modified: 2012-05-05
rate-limit {input | output} [dscp dscp-value] [access-group [rate-limit] acl-index] bps burst-normal burst-max conform-action conform-action exceed-action exceed-action

Is there are way in cisco ios to make a rate-limit that allows 30megs of traffic to flow at line speed then limit the average to 512kbs?
Question by:bobertperry
    LVL 79

    Expert Comment

    Not in a PIX.

    Author Comment

    The router is a cisco 3845
    LVL 79

    Accepted Solution

    OK, that's different. I assumed that since it was posted in the PIX Firewall zone that it was a PIX.
    I only know of ways to limit the rate of any given traffic flow based on access-lists or based on time using time-based acls. I don't know of any technique to only apply the rate limits after so much aggregate traffic has passed.
    You might be able to use a tcl script to evaluate total packet throughput on a given interface, recognize 30Mb, apply the acl, clear the counters, and then wait for another trigger to remove the restriction once again.

    Author Closing Comment

    Very good,  how much would it cost me for you write and test the code?

    Byron Wysocki

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