RE: Traffic-shaping question

From: Daniel Cisco Group Study (danielcgs@imc.net.au)
Date: Fri Mar 28 2003 - 18:18:46 GMT-3


Shouldn't be=2000 ?

(AR - CIR) / 8

(64000 - 48000) / 8

You are using a 125ms time interval, and you can only burst in the first one. Also, be is in bits, not bps.

Daniel

-----Original Message-----
From: CCIE FUN [mailto:ccieexam2002@yahoo.com]
Sent: Saturday, 29 March 2003 02:54
To: ccielab@groupstudy.com
Subject: Traffic-shaping question

Hello all,
I have traffic-shaping question and i have also
mentioned the solution i used.

please help me out to identify if it's correct and
what commands are useful to determine that the traffic
shaping is going to work as configured.

Here is the question:
1.The router R5 has two PVC's going R1 and R13 each
  has CIR of 48Kbps and burst size of 64Kbps.

2. The circuit from R5 to the frame-relay switch is
   provisioned at a speed of 64Kbps.

3. If BECN's are recieved, R5 needs to throttle back
   back the PVC's to 32Kbps.

4. Using CIR, Bc and Be configure traffic-shaping on
   R5.

Now here is my config for Router R5 relevant to
Traffic-shaping. I have not shown any frame-maps or IP
information for clarity purposes.

!
interface s0
encap fram
no arp fram
no fram inv
frame-relay traffic-shaping
frame-relay class Shape
!
map-class frame-relay Shape
 frame-relay cir 48000
 frame-relay bc 6000
 frame-relay be 16000
 frame-relay mincir 32000
 frame-relay adaptive-shaping becn

Now my question is do i need to configure R1 and R13
for shaping even if it is not mentioned in the
Question.

Also is my solution correct.

Thanks for your help.



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