Cisco SPA501G Administration Guide - Page 141

Configuring Security, Quality, and Network Features Configuring VLAN Settings 5 Configuring VLAN Settings If you use a VLAN, your IP phone voice packets are tagged with the VLAN ID. (This section does not apply to the Cisco WIP310.) Configuring Cisco Discovery Protocol (CDP) CDP is negotiation-based and determines which VLAN the IP phone resides in. If you are using a Cisco switch, Cisco discovery protocol (CDP) is available and enabled by default. CDP: • Obtains the protocol addresses of neighboring devices and discovers the platform of those devices. • Shows information about the interfaces your router uses. • Is media and protocol-independent. If you are using a VLAN without CDP, you must enter a VLAN ID for the IP phone. Configuring LLDP-MED The Cisco SPA300 Series and Cisco SPA500 Series IP phones support Link Layer Discovery Protocol for Media Endpoint Devices (LLDP-MED) for deployment with Cisco or other third-party network connectivity devices that use a Layer 2 autodiscovery mechanism. Implementation of LLDP-MED is done in accordance with IEEE 802.1AB (LLDP) Specification of May 2005, and ANSI TIA-1057 of April 2006. Cisco SPA IP phones operate as LLDP-MED Media End Point Class III devices with direct LLDP-MED links to Network Connectivity Devices, according to the Media Endpoint Discovery Reference Model and Definition (ANSI TIA-1057 Section 6). Cisco SPA IP phones support only the following limited set of TLVs as LLDP-MED Media Endpoint device class III: • Chassis ID TLV • Port ID TLV • Time to live TLV • Port Description TLV • System Name TLV • System Capabilities TLV Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 140