From: Ken.Farrington@barclayscapital.com
Date: Fri Sep 19 2003 - 14:07:05 GMT-3
So guys, What is the correct scenario for the following if put to me ?
Site 1
Telco gives me a 32k CIR
My line speed is 128k
Site 2
Dont care (theorically has DS3)
In real life, my Min CIR and CIR when I configure FRTS is going to be the
same and im gonna burst to the 128K and squeeze the life outa the cct.
So, I get a question saying "with the minimum configuration" configure FRTS,
I will have to configure CIR and MIN CIR as I dont want FRTS to throttle
down below my CIR and by default, the default mincir is 1/2 the CIR
Man, ya know, I sometimes think that we are just being tesed on ability to
undertsand cisco and not technical knowledge (or is this the same thing)
Any ideas guys?
-----Original Message-----
From: Brian Dennis [mailto:bdennis@internetworkexpert.com]
Sent: 19 September 2003 08:15
To: Danny.Andaluz@triaton-na.com
Cc: ccielab@groupstudy.com
Subject: RE: FRTS scenario
Danny,
Are those your solutions to the scenario? The solutions are allowing the
router to send data at 64kbps for DLCI 101 and 256kbps for DLCI 102. The
router will overwhelm the interface since the AR (aka port speed) is
256kbps. Also configuring min-CIR does not do anything if adaptive shaping
is not enabled.
Below is a link to a Frame-Relay traffic shaping presentation I developed.
Read it over and let me know if you have any questions. It should help
clarify FRTS.
http://www.internetworkexpert.com/resources/01700368.htm
If we can get a few people to sign up I'm willing to do a free Frame-Relay
traffic shaping vSeminar next week.
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Danny.Andaluz@triaton-na.com
Sent: Thursday, September 18, 2003 9:03 PM
To: ccielab@groupstudy.com
Subject: FRTS scenario
Hello Group,
A scenario for FRTS on a lab that I'm doing states:
"Assume voice traffic is will be passing over dlci 101, which has 64k link
speed. Configure Frame Relay such that there is no latency and packets are
not dropped. DLCI 102 has 50% BW of port speed. Configure CIR, Bc and Be
accordingly by maintaining Tc's default value and interface queueing default
mechanism. Port speed Between r1 and r2 is 256k."
R1
|
| |
dlci 101 | | dlci 102
| |
|
R2
Here's what I have as far as configs. I get all sorts of different answers
for what this should be. Hopefully I can get this cleared up. You think
you understand something, and then you get punched in the mouth.
Thanks,
Danny
R1
interface Serial0.8 point-to-point
ip address 172.16.78.1 255.255.255.252
frame-relay interface-dlci 101
class Voice
!
interface Serial0.9 point-to-point
ip address 172.16.78.5 255.255.255.252
frame-relay interface-dlci 102
class Data
map-class frame-relay Voice
frame-relay cir 64000
frame-relay bc 640
frame-relay be 0
frame-relay mincir 64000
no frame-relay adaptive-shaping
frame-relay fair-queue
frame-relay fragment 80
!
map-class frame-relay Data
frame-relay cir 256000
frame-relay bc 32000
frame-relay be 0
frame-relay mincir 128000
no frame-relay adaptive-shaping
frame-relay fair-queue
R2
interface Serial0.2 point-to-point
ip address 172.16.78.2 255.255.255.252
frame-relay interface-dlci 101
class voice
!
interface Serial0.3 point-to-point
ip address 172.16.78.6 255.255.255.252
frame-relay interface-dlci 102
class data
map-class frame-relay voice
frame-relay cir 64000
frame-relay bc 640
frame-relay be 0
no frame-relay adaptive-shaping
frame-relay fair-queue
frame-relay fragment 80
!
map-class frame-relay data
frame-relay cir 256000
frame-relay bc 32000
frame-relay be 0
no frame-relay adaptive-shaping
frame-relay fair-queue
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