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Cisco Rate-limiting

Posted on 2008-11-08
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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?
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Question by:bobertperry
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by:lrmoore
ID: 22914509
Not in a PIX.
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by:bobertperry
ID: 22914608
The router is a cisco 3845
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lrmoore earned 2000 total points
ID: 22915001
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.
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gt_tcl.html#wp1027188
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Author Closing Comment

by:bobertperry
ID: 31514724
Very good,  how much would it cost me for you write and test the code?

Byron Wysocki
CEO
541-310-201
wysocki@wtechlink.net
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