Re: Re[2]: Value Bc, Be, fragment, etc

From: Cagri Yucel (acybox-groupstudy@yahoo.com)
Date: Sun Oct 01 2006 - 19:15:44 ART

Hi Cadet,

As far as I know, there is no specific formulation for
fragmentation. If you are needed or asked to fragment packets by 250ms
intervals, you use the below command. However this value hasn't been derived
from some formula.

Hope this makes sense.

Cagri

----- Original Message 

----
From: cadet <cadet22@gmail.com>
To: Cagri Yucel
<acybox-groupstudy@yahoo.com>
Cc: Cisco certification <ccielab@groupstudy.com>
Sent: Sunday, October 1, 2006 10:26:26 PM
Subject: Re[2]: Value Bc, Be,
fragment, etc

Cagri,

I did not understand about fragment :(
r1(config)#map-class frame-relay test
r1(config-map-class)#frame-relay
fragment ?
  <16-1600>  Define fragment size, Bytes

  

  
> Bc = cir * Tc /
1000
> in your example Tc is taken as 10ms. Which is the minimum
> value and
good for voice traffic.

> Be= (AR - Cir) * Tc / 1000, so AR = 316000
>
Fragment is not calculated by a formula, it is just 250ms for each fragment.
>
And no idea about RTP priority :)

> Cagri

> ----- Original Message ----
>
From:
> "cadet22@gmail.com" <cadet22@gmail.com>
> To: ccielab@groupstudy.com
>
Sent:
> Sunday, October 1, 2006 8:59:47 PM
> Subject: Value Bc, Be, fragment,
etc

> Hi
> All !
> I have question about value in the next sample from Cisco
web site:

> The
> following example first configures the Frame Relay map
class called voip and
> then applies the map class to PVC 100 to provide
strict priority service to
> matching RTP packets. In this example, RTP
packets on PVC 100 with UDP ports
> in the range 16384 to 32764 will be
matched and given strict priority service.
> map-class frame-relay voip

>
frame-relay cir 256000

> frame-relay bc 2560   ----
> which formula ?

>
frame-relay be 600    ---- which formula ?

> frame-relay
> mincir 256000

>
no frame-relay adaptive-shaping

> frame-relay fair-queue
> frame-relay
fragment 250  ---- which formula ?

> frame-relay ip rtp priority
> 16384
16380 210 ---- which formula ?

> Thank you very much. 
> Max.
>

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