Whether a queue exists or not is irrelevant. We're talking purely about transmission rates to not exceed a certain value. So a peak rate is a do not exceed value. Whether traffic ARRIVED more than could be sent and is waiting in a queue doesn't affect the tranmission speed which is what you wanted to measure. HTH, Scott
_____ From: Derek Winchester [mailto:[EMAIL PROTECTED] Sent: Sunday, February 17, 2008 6:54 PM To: [EMAIL PROTECTED] Cc: [email protected] Subject: Re: [OSL | CCIE_RS] Shape vs Police question Could you elaborate a little bit. I was under the impression that shape and police functionality was very similar except that you queue via the shape and you drop via the police. Now if you were to configure an action to shape without the peak there is not burst beyond the cir but there will be queuing just the same. If i do not configure the shape peak will it not take the cir as the peak value by default. I could be wrong, what do you think Scott? On 2/17/08, Scott Morris <[EMAIL PROTECTED]> wrote: It's not the "normal" way of looking at it, but you could certainly use the "shape peak" feature within MQC to achieve that goal. While the main focus is to shape, it will also provide a "do not exceed" value that serves kind of as a limit! HTH, Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al. CCSI/JNCI-M/JNCI-ER VP - Technical Training - IPexpert, Inc. IPexpert Sr. Technical Instructor A Cisco Learning Partner - We Accept Learning Credits! [EMAIL PROTECTED] Telephone: +1.810.326.1444 Fax: +1.810.454.0130 http://www.ipexpert.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Derek Winchester Sent: Sunday, February 17, 2008 6:23 PM To: [email protected] Subject: [OSL | CCIE_RS] Shape vs Police question Someone asked me a very good question yesterday and I am still confused if I gave him the correct answer. He gave me a scenario that states that he has to limit all IP Precedence 3 traffic out of an interface to 256k, but he cannot use policing or rate-limiting. My answer was to use shaping. But from my experience, doesn't the word "limit" negates that as a possible answer? Even though you can use shaping to limit, I was always under the impression when studying for the CCIE that if they use the word limit that means no shaping. Can someone help ease my conscience? -- Derek S. Winchester www.myprofessorvoip.com www.winchester1.com www.derekspeaks.org
