flexible traffic policing

Unanswered Question
Jan 20th, 2009


Is there any way to rate limit traffic so that if there is congestion, traffic can not go above 10Mbps while if there is no congestion, traffic can enjoy the pipe size say 100Mbps?


I have this problem too.
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Joseph W. Doherty Tue, 01/20/2009 - 08:13

Nothing comes to my mine to provide exactly what you want, however with CBWFQ you can define a class to have a minimum guarantee of 10 Mbps when there's congestion, but it could use up to full link bandwidth when there's no congestion. If other traffic doesn't want all the bandwidth, but your defined class did, it they would share the bandwidth in proportion. I.e. instead of just the two bandwidth tiers, the defined class would be allowed anywhere from 10 Mbps to 100 Mbps depending on the bandwidth demand of other traffic.

One important difference, CBWFQ will queue excess traffic, not just drop it outright as a rate limiter would.


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