Cisco Press Lab 6 (QoS portion)

From: Yong Hong Siang (yonghs@scs.com.sg)
Date: Tue Nov 02 2004 - 09:49:14 GMT-3


Hi,

anyone had done Cisco Press Lab 6 Section 7 on the QoS portion?
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** Configure the frame Relay connecion between R2 and R3 such that the connection can adapt to congestion when a BECN is received from the network. Assume a 1544kbps access rate and a CIR of 64kbps.

the solution given was using
traffic-shape rate 1544000 38600 38600 1000
traffic-shape adaptive 64000
traffic-shape fecn-adapt

Can I use map-class frame-relay as the solution also? by the way, how the value 38600 come about?..:)
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** Consider VoIP to be a "critical" application. Configure PQ-CBWFQ (Priority Queueing-Class-Based Weight Fair Queueing) on R3 and R4 to guarantee a bandwidth of 256kbps on VoIP traffic and Fair-Queue with a queue size of 32 for all other traffic types.

the solution given is using

On R4
class-map match-all VOICE
 match input-interface Serial0/0
!
policy-map Class1
 class VOICE
  priority 256
 class class-default
  fair-queue 32
!
interface Serial 0/1
 service-policy output Class1

On R3
class-map match-all VOICE
 match input-interface Serial0/0
!
policy-map Class1
 class VOICE
  priority 256
 class class-default
  fair-queue 32
!
interface Serial 0/0
 service-policy output Class1

On R4, serial0/0 is shutdown. how it manage to classified the VoIP traffic by match input-interface Serial0/0?
anyone can advise?

many thanks
have a nice day

cheer!
Yong



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