From: Privat\ ("Erling)
Date: Mon Oct 07 2002 - 16:56:54 GMT-3
Hi,
my opinion about Frame Relay Traffic Shaping is as follows:
mincir = guaranteed BW provided by the provider ( per second )
cir = guaranteed average BW provided by the provider ( per second )
max rate / access rate ( per second )
Tc = period of time where Bc and Be are forwarded. Normally TC=125s => 8 Tc periods
Bc=cir/(nbr. of Tc periods) ( per Tc period )
max rate / access rate = (Bc+Be)*8 => Be = (AR/8)-Bc ( per Tc period, in this case Tc = 125 ms )
Traffic over max rate cause provider to drop.
Traffic over cir make the DE-bit activated
By receiving BECN traffic are throttled to mincir
A good link
http://www.cisco.com/warp/public/125/traffic_shaping_6151.html
Example:
int s0
encapsulation fram-relay
no fair-queue
fram-relay traffic shaping
fram-relay class serial-out
map-class fram-relay serial-out
fram-relay adaptiv-shaping becn
fram-relay cir <>
fram-relay mincir <>
frame-relay Bc <>
fram-relay Be <>
Best Regards
Erling Bjontegard
----- Original Message -----
From: <Svuillaume8@aol.com>
To: <ccielab@groupstudy.com>
Sent: Monday, October 07, 2002 8:07 PM
Subject: FRTS
> HI,
>
> Jeff doyle says:
>
> CIR = Port physical speed
> Mincir= CIR ( cir provides by carrier)
> Bc= remote speed circuit /8
> Be<= port speed of the remote router
>
> Is it correct to define a FRTS?
This archive was generated by hypermail 2.1.4 : Tue Nov 05 2002 - 08:35:41 GMT-3