RE: congestion avoidance question

From: Russell Kelly \(rukelly\) (rukelly@cisco.com)
Date: Sat Jul 15 2006 - 18:23:17 ART


A guaranteed minimum equates to bandwidth --- priority is a max
bandwidth with priority -- in CONGESTION it will be dropped -- though
you can configure a burst.

So although the second part of the question is a little obscure -- I
agree with your original config Jeff.
 

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Michael Stout
Sent: 15 July 2006 22:07
To: cvictor@protokolgroup.com; jeffryanwn@hotmail.com;
ccielab@groupstudy.com
Subject: RE: congestion avoidance question

i agree.

i think the guaranteed minimum bandwidth of 128k makes a priority queue
a requirement.

  --------------------------------------------------------------------

  From: "Victor Cappuccio" <cvictor@protokolgroup.com>
  Reply-To: "Victor Cappuccio" <cvictor@protokolgroup.com>
  To: "'Jeff Ryan'" <jeffryanwn@hotmail.com>, "'Cisco certification'"
  <ccielab@groupstudy.com>
  Subject: RE: congestion avoidance question
  Date: Sat, 15 Jul 2006 17:01:35 -0400
  Hi there Jeff,

  I think that
  class PREC_2 is using the priority 128 command.

  BTW I would like to know which workbook you are using, because I'm
  looking
  for a Workbook Specific to QOS Thanks
  Vmctor.-

  -----Mensaje original-----
  De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de
  Jeff
  Ryan
  Enviado el: Sabado, 15 de Julio de 2006 04:41 p.m.
  Para: Cisco certification
  Asunto: congestion avoidance question

  All, I'm doing a lab and it is aking me to make sure that all traffic
  leaving
  FA 0/0 (VlanX) set with Precedence 3 AND/OR traffic from VlanX
  destined to
  BB1
  vlan has a guaranteed minimum bandwidth of 128k. Also, make sure that
  in
  case
  of congestion that these packets get dropped randomly.

  Limit all traffic leaving FA 0/0 (VlanX) with Precedence 2 to 128k.
  DO NOT
  use
  policing or rate-limiting and DO NOT use an ACL to match IP
  Precedence.

  Does this look correct? Thanks in advance - Jeff

  --------
  R2#
  !
  ip cef
  !
  class-map match-any PREC_3_AND_OR_BB1
  match precedence 3
  match access-group 101
  class-map match-all PREC_2
  match precedence 2
  !
  !
  policy-map VLANX_OUT
  class PREC_3_AND_OR_BB1
      bandwidth 128
      random-detect
  class PREC_2
      shape average 128000
  !
  interface FastEthernet0/0
    service-policy output VLANX_OUT
  !
  access-list 101 permit ip 1.1.20.0 0.0.0.255 150.100.1.0 0.0.0.255
  !

 



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