Voice Vlan and Auto QoS

Implementation of IP Telephony, voice vlan should be used to separate data and voice traffic.

Auto QoS Advantage.

1. Easy to implement.
2. Follow Cisco Best Practices for QoS.

This will show you the example configuration for voice vlan and QoS in switch.

Switch(config)#int fa0/1
Switch(config-if)#switchport mode access
Switch(config-if)#switchport access vlan 200
Switch(config-if)#switchport voice vlan 100
Switch(config-if)#spanning-tree portfast
Switch(config-if)#auto qos voip cisco-phone ---> this will generate many commands

Note:

1. CDP need to be enabled on switch to allow switch to detect Cisco IP Phones.
2. For switch trunk port use "auto qos voip trust"