[j-nsp] policer useless

[Markus Åberg (LMF)]

I connected a Smartbits(R) with 2 fastethernet cards to a M10 with a fastethernet PIC.

Blasting 100Mbit/s small (64 byte) *raw IP* packets thru the box i get pretty accurate results. 

smartbits -> fe-1/0/0.0 <-> fe-1/0/3.0 <- smartbits

With no policing 100% thruput (obviously)

bandwidth-limit 8m+burst 100k	7995400 bps
bandwidth-limit 2m/100k		1983448 bps
bandwidth-limit 4m/100k		3997240 bps
bandwidth-limit 256k/2k		244040 bps

This is using 1 static source/destination IP address on each smartbits port (10.5.5.5 and 10.6.6.6) routed thru the box (directly connected networks)

--
Markus Åberg
Oy LM Ericsson Ab
E-mail: markus.aberg@ericsson.com
 


-----Original Message-----
From: Blaz Zupan [mailto:blaz@inlimbo.org]
Sent: 11. syyskuuta 2002 21:56
To: Rubens Kuhl Jr.
Cc: juniper-nsp@puck.nether.net
Subject: Re: [j-nsp] policer useless


> Try multiplying the rate you want by 1.25; I don't recall the exact =
number,
> but this is approximately the factor between bytes on the line and =
bytes
> required to transport them on J-cells thru the shared memory.

Actually I tried setting the policer to 8m, the result was a transfer rate of
390 kbytes/s. I find no logic in this...

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