Cisco Systems 8.6 manual Cdp, Cppdp, Dhcp, Cisco Tftp in the Cisco Unified Communications

Chapter 1 An Overview of the Cisco Unified IP Phones

What Networking Protocols are Used?

Table 1-2	Supported Networking Protocols on the Cisco Unified IP Phones (continued)
Networking Protocol		Purpose	Usage Notes
Cisco Discovery Protocol		CDP is a device-discovery protocol that	The Cisco Unified IP Phones use CDP to
(CDP)		runs on all Cisco-manufactured	communicate information such as auxiliary VLAN ID,
		equipment.	per port power management details, and Quality of
		Using CDP, a device advertises its	Service (QoS) configuration information with the
			Cisco Catalyst switch.
		existence to other devices and receives
		information about other devices in the
		network.
Cisco Peer-to-Peer		CPPDP is a Cisco proprietary protocol	CPPDP is used by the Peer Firmware Sharing
Distribution Protocol		used to form a peer-to-peer hierarchy of	feature.
(CPPDP)		devices. CPPDP is also used to copy
		firmware or other files from peer devices
		to neighboring devices.
Dynamic Host		DHCP dynamically allocates and assigns	DHCP is enabled by default. If disabled, you must
Configuration Protocol		an IP address to network devices.	manually configure the IP address, subnet mask,
(DHCP)		DHCP enables you to connect an IP Phone	gateway, and a TFTP server on each phone locally.
		into the network and have the phone	Cisco recommends that you use DHCP custom
		become operational without your needing	option 150. With this method, you configure the
		to manually assign an IP address or to	TFTP server IP address as the option value. For
		configure additional network parameters.	additional supported DHCP configurations, see
			Dynamic Host Configuration Protocol and
			Cisco TFTP in the Cisco Unified Communications
			Manager System Guide.
Hypertext Transfer		HTTP is the standard way of transferring	Cisco Unified IP Phones use HTTP for the XML
Protocol (HTTP)		information and moving documents across	services and for troubleshooting purposes.
		the Internet and the web.	Cisco Unified IP Phones do not support the use of
			IPv6 addresses in the URL. You cannot use a literal
			IPv6 address in the URL or a hostname that maps to
			an IPv6 address.
Hypertext Transfer		Hypertext Transfer Protocol Secure	Web applications with both HTTP and HTTPS
Protocol Secure (HTTPS)		(HTTPS) is a combination of the	support have two URLs configured. Cisco Unified
		Hypertext Transfer Protocol with the	IP Phones that support HTTPS choose the HTTPS
		SSL/TLS protocol to provide encryption	URL out of the two URLs.
		and secure identification of servers.
IEEE 802.1X		The IEEE 802.1X standard defines a	The Cisco Unified IP Phones implement the IEEE
		client-server-based access control and	802.1X standard by providing support for the
		authentication protocol that restricts	following authentication methods: EAP-FAST,
		unauthorized clients from connecting to a	EAP-TLS, and EAP-MD5.
		LAN through publicly accessible ports.	When 802.1X authentication is enabled on the
		Until the client is authenticated, 802.1X	phone, you should disable the PC port and voice
		access control allows only Extensible	VLAN. See Supporting 802.1X Authentication on
		Authentication Protocol over LAN	Cisco Unified IP Phones, page 1-19for additional
		(EAPOL) traffic through the port to which	information.
		the client is connected. After
		authentication is successful, normal traffic
		can pass through the port.

Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)

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