QoS Nest Configuration

Example of QoS nest 

Task: 

• Provider needs to limit the traffic from client not to exceed 1Gbps
• Voice is in 172.16.1.0/24 network
• Data is in 192.168.1.0/24 network
• Provider guaranteed Voice traffic to have minimum bandwidth of 20Mbps
• Use nest configuration and apply on R2 (Provider)

Configuration

Create Access-list for Voice traffic

ip access-list standard VOICE

 permit 172.16.1.0 0.0.0.255

!

Create Class for Voice traffic

class-map match-all VOICE

 match access-group name VOICE

!

Apply policy to guaranteed 20M for Voice traffic

policy-map VOICE-20M

 class VOICE

  bandwidth 20000

Nest QoS Configuration

policy-map INTERFACE-POLICY

 class class-default

  fair-queue

    police 20000000 conform-action transmit  exceed-action drop

  service-policy VOICE-20M

!

Apply Policy to interface

interface FastEthernet0/0

 ip address 10.10.10.2 255.255.255.0

 service-policy input INTERFACE-POLICY

 duplex auto

 speed auto

!