From: Haohong Lin (hhlin@xxxxxxxxxx)
Date: Tue Jun 12 2001 - 06:12:36 GMT-3
In order to configure traffic shaping on the interface s0.1 with CIR of
32Kbps and peak rate 64Kbps, I use two methods.
<Method 1>
interface Serial0
encapsulation frame-relay
frame-relay traffic-shaping
!
interface Serial0.1 point-to-point
ip address 172.16.134.3 255.255.255.224
frame-relay class qos
frame-relay interface-dlci 100
!
map-class frame-relay qos
no frame-relay adaptive-shaping
frame-relay cir 32000 <-- CIR
frame-relay bc 4000 <-- CIR * Tc(125ms)
frame-relay be 4000 <-- EIR * Tc
Show result:
Router#sh traffic-shape
Interface Se0.1
Access Target Byte Sustain Excess Interval Increment Adapt
VC List Rate Limit bits/int bits/int (ms) (bytes)
Active
100 32000 1000 4000 4000 125 500 -
<Method Two>
Configuration:
interface Serial0
encapsulation frame-relay
frame-relay traffic-shaping
!
interface Serial0.1 point-to-point
ip address 172.16.134.3 255.255.255.224
frame-relay class qos
frame-relay interface-dlci 100
!
map-class frame-relay qos
frame-relay traffic-rate 32000 64000 <-- CIR equals 32Kbps, peak rate
equals 64Kbps
no frame-relay adaptive-shaping
Show result:
Router#sh traffic-shape
Interface Se0.1
Access Target Byte Sustain Excess Interval Increment Adapt
VC List Rate Limit bits/int bits/int (ms) (bytes)
Active
100 32000 4500 32000 32000 125 500 -
Why Bc and Be are different so distinctly between two method. Can you point
out what I am wrong.
Thank you in advance.
Regards
Haohong Lin
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