Question on FR CBWFQ

From: Bob Rech (brech@kc.rr.com)
Date: Mon Nov 11 2002 - 16:22:44 GMT-3


1.) What is the difference between applying a frame relay map-class under the
sub-interface as opposed to under the dlci?
R1(config-subif)#int s0/0.1
R1(config-subif)#frame interface
R1(config-subif)#frame interface-dlci 16
R1(config-fr-dlci)#class mclass-ypa
R1(config-fr-dlci)#

or

R1(config-subif)#int s0/0.1
R1(config-subif)#frame class
R1(config-subif)#frame class mclass-ypa

2.) When implementing cbwfq with service-policy on a link that carries both
critical applications, other hosting apps and internet traffic and within the
internet traffic limit ftp-data to a set rate. Frame -relay port speed is 512k
with a 384k cir
My thoughts were to use 3 classes for the hosting traffic. My concern is that
I'm not sure of the effect of the second service-policy within the
class-default to limit the rate of ftp-data, or whether using CAR on the S0/0
interface would be a better approach. Except it might limit all ftp including
traffic defined by other classes.

class-map match-all p3-class
  match access-group name p3-acl
class-map match-all p1-class
  match access-group name p1-acl
class-map match-all p5-class
  match access-group name p5-acl
class-map match-all ftp-class
  match access-group name ftp-data

policy-map class-d-policy
  class ftp-class
     police 64000 2000 4000 conform-action transmit exceed-action drop

policy-map fr-out-policy
  class p5-class
     bandwidth 128
     random-detect
     set ip precedence 5
  class p3-class
     bandwidth 32
     set ip precedence 3
  class p1-class
     set ip precedence 1
  class class-default
     fair-queue
     random-detect
     service-policy class-d-policy

map-class frame-relay mclass-ypa
 no frame-relay adaptive-shaping
 frame-relay cir 490000
 frame-relay bc 61250
 frame-relay mincir 256000
 service-policy out fr-out-policy



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