Cisco CP-7961G-GE Administration Guide - Page 20

What Networking Protocols are Used? Chapter 1 An Overview of the Cisco Unified IP Phone Table 1-2 Supported Networking Protocols on the Cisco Unified IP Phone (continued) Networking Protocol Purpose Usage Notes Hypertext Transfer Protocol Secure (HTTPS) Hypertext Transfer Protocol Secure (HTTPS) is a combination of the Hypertext Transfer Protocol with the SSL/TLS protocol to provide encryption and secure identification of servers. Web applications with both HTTP and HTTPS support have two URLs configured. Cisco Unified IP Phones that support HTTPS choose the HTTPS URL out of the two URLs. IEEE 802.1X The IEEE 802.1X standard defines a client-server-based access control and authentication protocol that restricts unauthorized clients from connecting to a LAN through publicly accessible ports. Until the client is authenticated, 802.1X access control allows only Extensible Authentication Protocol over LAN (EAPOL) traffic through the port to which the client is connected. After authentication is successful, normal traffic can pass through the port. The Cisco Unified IP Phone implements the IEEE 802.1X standard by providing support for the following authentication methods: EAP-FAST, EAP-TLS, and EAP-MD5. When 802.1X authentication is enabled on the phone, you should disable the PC port and voice VLAN. Refer to Supporting 802.1X Authentication on Cisco Unified IP Phones, page 1-18 for additional information. Internet Protocol (IP) IP is a messaging protocol that addresses To communicate using IP, network devices must and sends packets across the network. have an assigned IP address, subnet, and gateway. IP addresses, subnets, and gateways identifications are automatically assigned if you are using the Cisco Unified IP Phone with Dynamic Host Configuration Protocol (DHCP). If you are not using DHCP, you must manually assign these properties to each phone locally.The Cisco Unified IP Phone supports concurrent IPv4 and IPv6 addresses. Configure the IP addressing mode (IPv4 only, IPv6 only, and both IPv4 and IPv6) in Cisco Unified Communications Manager Administration. For more information, refer to Internet Protocol Version 6 (IPv6) in the Cisco Unified Communications Manager Features and Services Guide. Link Layer Discovery Protocol (LLDP) LLDP is a standardized network discovery The Cisco Unified IP Phone supports LLDP on the protocol (similar to CDP) that is supported PC port. on some Cisco and third-party devices. Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP and SIP) 1-6 OL-21011-01