Cisco WS-C3560E-48PD-SF Command Reference - Page 49

Chapter 2 Catalyst 3560 Switch Cisco IOS Commands auto qos voip auto qos voip Use the auto qos voip interface configuration command to automatically configure quality of service (QoS) for voice over IP (VoIP) within a QoS domain. Use the no form of this command to return to the default setting. auto qos voip {cisco-phone | cisco-softphone | trust} no auto qos voip [cisco-phone | cisco-softphone | trust] Syntax Description cisco-phone Identify this port as connected to a Cisco IP Phone, and automatically configure QoS for VoIP. The QoS labels of incoming packets are trusted only when the telephone is detected. cisco-softphone Identify this port as connected to a device running the Cisco SoftPhone, and automatically configure QoS for VoIP. trust Identify this port as connected to a trusted switch or router, and automatically configure QoS for VoIP. The QoS labels of incoming packets are trusted. For nonrouted ports, the CoS value of the incoming packet is trusted. For routed ports, the DSCP value of the incoming packet is trusted. Defaults Auto-QoS is disabled on the port. When auto-QoS is enabled, it uses the ingress packet label to categorize traffic, to assign packet labels, and to configure the ingress and egress queues as shown in Table 2-1. Table 2-1 Traffic Types, Packet Labels, and Queues DSCP3 CoS4 VoIP Data Traffic 46 5 VoIP Control Traffic 24, 26 3 Routing Protocol Traffic 48 6 STP1 BPDU2 Traffic 56 7 CoS-to-Ingress 2, 3, 4, 5, 6, 7 (queue 2) Queue Map CoS-to-Egress 5 (queue 1) 3, 6, 7 (queue 2) Queue Map 1. STP = Spanning Tree Protocol 2. BPDU = bridge protocol data unit 3. DSCP = Differentiated Services Code Point 4. CoS = class of service Real-Time Video Traffic All Other Traffic 34 - 3 - 0, 1 (queue 1) 4 (queue 3) 2 0, 1 (queue 3) (queue 4) 78-16405-05 Catalyst 3560 Switch Command Reference 2-17