Quick Notes - QOS CB-Shaping

Quick Notes - QoS - Class Based-Shaping

Shape-average - Traffic is sent at the CIR with bursting of Be bits per timing interval.

Shape-peak - Traffic is sent at peak rate. Peak rate - CIR*(1+Be/Bc) - this can result in packet loss.

Example shape-average:

R1(config)#class-map CMAP-FTP
R1(config-cmap)#match protocol ftp
R1(config-cmap)#exit
R1(config)#policy-map PMAP-FTP
R1(config-pmap)#class CMAP-FTP
R1(config-pmap-c)#shape average 512000
R1(config-pmap-c)#bandwidth 256
R1(config-pmap-c)#exit
R1(config-pmap)#exit
R1(config)#interface serial 0/0/0
R1(config)#service-policy output PMAP-FTP

This allows the minimum of 256kbps sent with a maximum of 512kbps