From: steven.j.nelson@xxxxxx
Date: Sun Jul 14 2002 - 14:00:52 GMT-3
Mamoor
My friend, here you go..
map-class frame-relay cisco
frame-relay cir 64000
frame-relay mincir 32000
frame-relay adaptive-shaping becn
frame-relay bc 8000
frame-relay be 16000
Cir = 64000 per second under non congestion circumstances
mincir = 32000 per second under congestion circumstances (BECN)
bc = 8000 per time interval
be = 16000 per time interval
TC = 0.125
So if there are tokens in the bucket available for excess you will be
sending 8000 + 16000 per TC
OK so TC is 0.125 there are 8 of these in 1 second, 0.125 * 8 = 1
So 8000 (bc) + 16000 (be) * 8 (0.125 *8) = 192k per second.
192K is the AR, which is specified in seconds by the service provider, the
trick here is to know what is ent when and then you can convert to
seconds...
Thanks
Steve
Does this help ?
Thanks
Steve
-----Original Message-----
From: Ahmed Mamoor Amimi [mailto:mamoor@ieee.org]
Sent: 14 July 2002 17:23
To: Lab Candidate
Cc: ccielab
Subject: Re: FRTS want to nail it down !!
really !! if this is obvious...
Then can u explain this :
http://www.cisco.com/warp/public/125/traffic_shaping_6151.html
AR = 192000
map-class frame-relay cisco
frame-relay cir 64000
frame-relay mincir 32000
frame-relay adaptive-shaping becn
frame-relay bc 8000
frame-relay be 16000
see that Be = (AR-CIR) * 0.125 = (192000 - 64000) * 0.125 = 16000
comments are needed .... please !!
----- Original Message -----
From: Lab Candidate <labccie@yahoo.com>
To: Ahmed Mamoor Amimi <mamoor@ieee.org>
Cc: <ccielab@groupstudy.com>
Sent: Sunday, July 14, 2002 10:03 AM
Subject: Re: FRTS want to nail it down !!
> Mamoor,
>
> This is obvious, since you said the port speed is 64000 and cir is 32000,
> if you want to utilized the most of your available bandwidth for burst
> purpose, the be would be equal to port_speed minus cir, hence 32000 bps.
>
>
>
> I was reading the power-session 2002, here on page 66 they have given the
> values like :
>
> Port Speed: 64000 Bps
> CIR : 32000 Bps (Average Rate of Traffic Without Congestion)
> Mincir: 16000 Bps (Average Rate of Traffic With Congestion)
> Bc: 4000 Bps (Amount of Data Sent Per Interval)
> Be: 32000 Bps (Amount of Excess Allowed Once Credit Has Built Up)
>
> interface Serial0
> ip address 10.10.10.1 255.255.255.0
> encapsulation frame-relay
> frame-relay traffic-shaping
> frame-relay class ccie
>
> map-class frame-relay ccie
> frame-relay adaptive-shaping becn
> frame-relay cir 32000
> frame-relay mincir 16000
> frame-relay bc 4000
> frame-relay be 32000
>
> Can someone explain why Be = 32000 , why not Be = 32000 * 0.125 = 4000
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