Use the formulas that I have mentioned. They are Cisco recommended. With regards Kings
On Tue, Apr 24, 2012 at 3:30 AM, Mike Rojas <[email protected]> wrote: > I have a big question with these kind of exercises, the Majority of > questions that I have seen (INE,IPexpert and Yusuf) they mostlikely want > you to restrict the traffic to a certain value, but in very few cases they > ask you to configure the BC TC and the other values. > > I guess my question is, if not specified, what should we do, we leave it > as it is? Or do we apply the values that appear on the doc? Cuz I would > expect that the question would say something like, "use the values > recommended" or something about the values... > > > Mike > > > > ------------------------------ > Date: Mon, 23 Apr 2012 22:01:02 +0530 > From: [email protected] > To: [email protected] > CC: [email protected] > Subject: Re: [OSL | CCIE_Security] Formula to calculate Burst value > > > Tc is involved in both shaping and policing. > > With policing, Tc is the seconds for which tokens are put in the bucket. > > With regards > Kings > > On Mon, Apr 23, 2012 at 7:26 PM, Joe Astorino > <[email protected]>wrote: > > The forumulas for calculating the Bc and Be for policing are how you have > defined, them but I would be careful with the use of the term "Tc" when > dealing with policing. Tc is generally a term that applies to traffic > shaping and not traffic policing. Why? What does Tc do for us? With a > shaper, Tc is a static defined interval of time. As you know, each Tc > interval we get to add Bc tokens to the bucket to use. Traffic policing > does not work the same way, contrary to popular belief. With traffic > policing, the token bucket is refreshed based on a function of 2 things: > The CIR value and the amount of time passed since the last packet was > received. It has nothing to do with Tc. > > My point is simply that Tc is not involved with the calculations of > traffic policing, as it is a concept that applies to traffic shaping. > > On Sun, Apr 22, 2012 at 12:32 PM, Kingsley Charles < > [email protected]> wrote: > > Hi all > > The following is how we calculate Bc for QoS MQC policing and TCP > rate-limiting. Now for ZPF policing, which formula should be used. I need > Cisco doc for confirmation. > > > Policing > ======== > > Tc = 0.25 secs > > BC = CIR/8 * 0.25 = CIR/32 > > Be = Bc, if not specified > > > TCP Rate-limiting > ============= > > Tc = 1.5 secs > > BC = CIR/8 * 1.5 > > BE = 2 BC > > > With regards > Kings > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > > > > -- > Regards, > > Joe Astorino > CCIE #24347 > http://astorinonetworks.com > > "He not busy being born is busy dying" - Dylan > > > > _______________________________________________ For more information > regarding industry leading CCIE Lab training, please visit > www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com >
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
