Auto-VoIP Commands 3278Auto-VoIP CommandsVoice over Internet Protocol (VoIP) allows network users to make telephonecalls using a computer network over a data network like the Internet. Withthe increased prominence of delay-sensitive applications (voice, video, andother multimedia applications) deployed in networks today, proper QoSconfiguration ensures high-quality application performance. The Auto-VoIPfeature is intended to provide an easy classification mechanism for voicepackets so that they can be prioritized above data packets in order to providebetter QoS.The Auto-VoIP feature explicitly matches VoIP streams in Ethernet switchesand provides them with a better class of service than ordinary traffic. TheAuto VoIP module provides the capability to assign the highest priority forthe following VoIP packets:• Session Initiation Protocol (SIP)• H.323• Skinny Client Control Protocol (SCCP)Auto-VoIP borrows ACL lists from the global system pool. ACL lists allocatedby Auto-VoIP reduce the total number of ACLs available for use by thenetwork operator. Enabling Auto-VoIP uses one ACL list to monitor for VoIPsessions. Each monitored VoIP session utilizes two rules from an additionalACL list. This means that the maximum number of ACL lists allocated byAuto-VoIP is two. The Auto-VoIP feature limits the maximum number ofsimultaneous users to 16. Administrators should utilize the Voice VLANfeature for deployment of IP voice service in an enterprise network becauseVoice VLAN scales to significantly higher numbers of users.Commands in this ChapterThis chapter explains the following commands:show switchport voice switchport voice detect auto
