Planning for Implementation of Voice in a Campus Network参考.ppt

Configuring Campus Switches to Support Voice Planning for Implementation of Voice in a Campus Network在园区网中规划及实现语音技术 Describing VoIP Network Components Characteristics of Voice and Data Describing VoIP Call Flow Auxiliary VLANs Voice VLANs 802.1p/Q PortFast A highly available network QoS Basics High Availability for VoIP Traditional telephony networks claim 99.999 percent uptime. Data networks must consider reliability and availability requirements when incorporating voice. Methods to improve reliability and availability include: Redundant hardware Redundant links UPS Proactive network management Power Requirements in Support of VoIP Inline power or power patch panel for IP phones May require special modules UPS and generator backup, with autorestart and monitoring A 4-hour service-response contract for system problems Recommended equipment operating temperatures maintained 24/7 Summary Converged networks reduce costs and increase productivity. VoIP equipment consists of a VoIP phone and a network infrastructure capable of supporting VoIP. Auxiliary VLANs provide the ability to apply QoS to voice traffic without affecting the flow of data from the client PC. To ensure high quality VoIP, implementation of QoS is required. High-availability networks must be created to avoid network congestion and overcome a lack of redundancy and poor engineering. For ease of implementation, most VoIP phones get power through the same cable on which data is sent. This is called “inline power.” Cisco supports 802.3af and its proprietary standard. Cisco Network Academy. All rights reserved.. CCNP+ BSMSN v3.0 Cisco Network Academy. All rights reserved.. CCNP+ BSM