From: David Lonnie (david.lonnie@gmail.com)
Date: Mon Jun 02 2008 - 00:30:37 ART
When you configure frame-relay traffic-shaping on s0/0 of your router,
you are shaping the traffics outbound s0/0 interface.
excess burst will be marked in DE bit.
So,while the traffics with DE bit set are congesting.It will be discarded by
other devices.
On Mon, Jun 2, 2008 at 11:19 AM, Mark Stephanus Chandra <
mark.chandra@gmail.com> wrote:
> I have the same question with Mr Ahmed Here, How the other end determine if
> my
> traffic is a burst and the other end might potential drop the excess burst
> traffic ?
>
>
>
> I Mean, when we configure in frame-relay, the frame-relay switch will send
> DE
> (Discard Eligible bit) right ? To mArk the traffic that it's an excess
> burst
> traffic and it might be drop.
>
>
>
> And now we are dealing with router to router traffic, what method that the
> router will mark the excess so it is eligible to be discarded ?
>
>
>
>
>
>
>
> Mark Stephanus Chandra
> IT Consultant
>
>
>
> From: ahmed badr [mailto:eng.ahmedbadr@gmail.com]
> Sent: 31 Mei 2008 23:40
> To: Narbik Kocharians
> Cc: Mark Stephanus Chandra; Sadiq Yakasai; Cisco certification
> Subject: Re: Shape Peak
>
>
>
> So, how will the other end determine if I'm sending with/without the excess
> burst? at the end it will receive 256k (either by shape average 256000 or
> shape peak 128000) ?
> I'm confused!!
>
>
>
> 2008/5/31 Narbik Kocharians <narbikk@gmail.com>:
>
> CB-Shaping can be done in two different ways: Shape average and Shape Peak.
>
> Shape average limits the transmission rate to CIR, whereas, with Shape peak
> the router can send more traffic than CIR.
>
> The formula is:
>
> Peak Rate = CIR (1+Be/Bc) and remember by default Be and the Bc are set to
> 8k
>
> With Shape Peak you are allowed to burst higher than CIR but remember that
> the
> excess traffic has the potential of being dropped if the network is
> congested.
> Typically used if the network has more bandwidth available and the app that
> is
> being used can handle packet loss.
>
>
>
> On Sat, May 31, 2008 at 8:04 AM, ahmed badr <eng.ahmedbadr@gmail.com>
> wrote:
>
> yes Mark, this is why I ask. unless there is a reason for that, why then
> cisco produced the "shape peak" command if I can get the same result with
> "shape average" and be=0 !!!
>
> 2008/5/31 Mark Stephanus Chandra <mark.chandra@gmail.com>:
>
>
> > Hi All,
> >
> > Just reading you guys e-mail and suddenly just come in my mind, so anyway
> > what the peak for then ? Is there any different treat between burst
> traffic
> > and commited traffic ? Just like when we configure frame relay, frame
> relay
> > have different treat with burst traffic, burst traffic can might be get
> DE
> > bit right ?
> >
> > Mark Stephanus Chandra
> > IT Consultant
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Sadiq Yakasai
> > Sent: 31 Mei 2008 21:22
> > To: ahmed badr
> > Cc: Cisco certification
> > Subject: Re: Shape Peak
> >
> > Hi Ahmed,
> >
> > Yes, you get the same data rate in this scenario because Be=0 in the
> first
> > case anyway.
> >
> > Sadiq
> >
> >
> > _______________________________________________________________________
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>
>
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>
>
>
>
>
>
>
>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.Net-Workbooks.com
> Sr. Technical Instructor
>
>
> _______________________________________________________________________
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