From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Wed Dec 14 2005 - 22:29:19 GMT-3
John,
The question doesn't specify that the queue depth and
mark-prob-denominator are taken into account for this task. This means
that technically any value would be acceptable. The "default" values
(queue depth and mark-prob-denominator) were used for the random-detect
precedence command.
Rack1R2(config-if)#do sho run int fa0/0
Building configuration...
Current configuration : 93 bytes
!
interface FastEthernet0/0
ip address 144.1.2.2 255.255.255.0
speed 100
full-duplex
end
Rack1R2(config-if)#random-detect
Rack1R2(config-if)#do sho queueing int f0/0
Interface FastEthernet0/0 queueing strategy: random early detection
(WRED)
Exp-weight-constant: 9 (1/512)
Mean queue depth: 0
class Random drop Tail drop Minimum Maximum Mark
pkts/bytes pkts/bytes thresh thresh prob
0 0/0 0/0 20 40 1/10
1 0/0 0/0 22 40 1/10
2 0/0 0/0 24 40 1/10
3 0/0 0/0 26 40 1/10
4 0/0 0/0 28 40 1/10
5 0/0 0/0 31 40 1/10
6 0/0 0/0 33 40 1/10
7 0/0 0/0 35 40 1/10
rsvp 0/0 0/0 37 40 1/10
Rack1R2(config-if)#
Rack1R2(config-if)#random-detect precedence 0 15 40 10
Rack1R2(config-if)#do sho queueing int f0/0
Interface FastEthernet0/0 queueing strategy: random early detection
(WRED)
Exp-weight-constant: 9 (1/512)
Mean queue depth: 0
class Random drop Tail drop Minimum Maximum Mark
pkts/bytes pkts/bytes thresh thresh prob
0 0/0 0/0 15 40 1/10
1 0/0 0/0 22 40 1/10
2 0/0 0/0 24 40 1/10
3 0/0 0/0 26 40 1/10
4 0/0 0/0 28 40 1/10
5 0/0 0/0 31 40 1/10
6 0/0 0/0 33 40 1/10
7 0/0 0/0 35 40 1/10
rsvp 0/0 0/0 37 40 1/10
Rack1R2(config-if)#
I'll update the solutions guide to state that the values for the
queue depth and mark-prob-denominator are not important for this task so
that it doesn't create any confusion in the future. I'll also state how
we chose 40 for the queue depth and 10 for the mark-prob-denominator.
Technically you could have left off the mark-prob-denominator and the
router would have used 10.
Rack1R2(config-if)#random-detect precedence 0 15 40
Rack1R2(config-if)#do sho queueing int f0/0
Interface FastEthernet0/0 queueing strategy: random early detection
(WRED)
Exp-weight-constant: 9 (1/512)
Mean queue depth: 0
class Random drop Tail drop Minimum Maximum Mark
pkts/bytes pkts/bytes thresh thresh prob
0 0/0 0/0 15 40 1/10
1 0/0 0/0 22 40 1/10
2 0/0 0/0 24 40 1/10
3 0/0 0/0 26 40 1/10
4 0/0 0/0 28 40 1/10
5 0/0 0/0 31 40 1/10
6 0/0 0/0 33 40 1/10
7 0/0 0/0 35 40 1/10
rsvp 0/0 0/0 37 40 1/10
Rack1R2(config-if)#
Thanks for your input.
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
John Matus
Sent: Wednesday, December 14, 2005 4:37 PM
To: ccielab@groupstudy.com
Subject: IE lab4 v2.0 - QOS
for this wred question.........................
the answer in the solution guide is random-detect prec 0 15 40 10
buuuttttt.
it does not indicate in the question what the queue depth is or what the
probabillity denominator should be, so i'm curious why these numbers
where
chosen.
Regards,
John D. Matus
Technical Support / PAS
Fujitsu Consulting
626-568-7716
John.Matus@tokiom.com
========================================================================
================================
This e-mail is intended solely for the individual to whom it
is
addressed. The information contained in this transmission
contains
confidential and/or proprietary information or is otherwise privileged.
If
the reader of this message is not the intended recipient, please be
advised
that any dissemination, distribution or copying of this transmission
is
strictly prohibited. If you have received this e-mail in error,
please
notify us immediately by returning it to the sender and deleting this
copy
from your system. Thank you for your
cooperation.
========================================================================
================================
This archive was generated by hypermail 2.1.4 : Mon Jan 09 2006 - 07:07:51 GMT-3