[j-nsp] rate limiting question

[harry]

Another rule of thumb, especially for high-speed links (> OC-12c) is to set
the max-burst to a value that represents 3-5 milliseconds of line rate
transmission. 

As you point out, a 20 M vs a 50 M limiter may well use the same burst size
parameter. The main concern is setting too small a burst, which can make the
policer seem broken because throughput is measured below the configured
bandwidth limit.

HTHs



> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net 
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of 
> Wayne E. Bouchard
> Sent: Monday, December 08, 2003 3:20 PM
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] rate limiting question
> 
> 
> Hi folks,
> 
> Got sort of a basic question in regards to rate limiting. I'm 
> trying to figure out a good method of determining what to set 
> the burst to. The docs say that a decent measure is 10x the 
> MTU but I'm not certain thats the best method. (ie, limiting 
> someone to 20 megs vs 50 megs, the burst period etc would 
> necessarily vary, right?) So what sort of best practice do 
> people out there use for their setups?
> 
> -Wayne
> 
> 
> ---
> Wayne Bouchard
> web at typo.org
> Network Dude
> http://www.typo.org/~web/ 
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