QoS on Frame Relay Physical Interface

From: gladston@br.ibm.com
Date: Mon Apr 26 2004 - 14:53:31 GMT-3


Any help to understand the difference of implementing CBWFQ on the physical interface and on the map-class?

The goal is to reserve 50% of the bandwidth for FTP traffic traversing the serial 0/0.

Router R1 is connected to R2 and R3 using serial 0/0 (frame-relay encapsulation)

This is the first approach I tried:

class-map match-all FTP
  match access-group 177
!
policy-map QOS
  class FTP
   bandwidth percent 25
!
interface Serial0/0
 ip address 142.20.125.5 255.255.255.0
 encapsulation frame-relay
 service-policy output QOS
 frame-relay map ip 142.20.125.1 12 broadcast
 frame-relay map ip 142.20.125.2 13 broadcast
!
access-list 177 permit tcp any any eq ftp
access-list 177 permit tcp any any eq ftp-data

And this is the second:

class-map match-all FTP
  match access-group 177
!
policy-map QOS
  class FTP
   bandwidth percent 50
!
interface Serial0/0
 ip address 1.1.1.1 255.255.255.0
 encapsulation frame-relay
 frame-relay traffic-shaping
 frame-relay map ip 1.1.1.2 12 broadcast
 frame-relay map ip 1.1.1.3 13 broadcast
!
frame-relay interface-dlci 12
 class QoS
frame-relay interface-dlci 13
 class QoS
!
map-class frame-relay QoS
 service-policy output QOS
!
access-list 177 permit tcp any any eq ftp
access-list 177 permit tcp any any eq ftp-data



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