Cisco 8832 Administration Manual page 28

Supported Network Protocols
Network Protocol
Dynamic Host Configuration Protocol
(DHCP)
Hypertext Transfer Protocol (HTTP)
Hypertext Transfer Protocol Secure
(HTTPS)
IEEE 802.1X
Cisco IP Conference Phone 8832 Administration Guide for Cisco Unified Communications Manager
18
Purpose
DHCP dynamically allocates and assigns
an IP address to network devices.
DHCP enables you to connect an IP phone
into the network and have the phone
become operational without the need to
manually assign an IP address or to
configure additional network parameters.
HTTP is the standard protocol for transfer
of information and movement of documents
across the Internet and the web.
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.
The IEEE 802.1X standard defines a
client-server-based access control and
authentication protocol that restricts
unauthorized clients from connection 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.
About the Cisco IP Conference Phone
Usage Notes
DHCP is enabled by default. If disabled,
you must manually configure the IP
address, subnet mask, gateway, and a TFTP
server on each phone locally.
We recommend that you use DHCP custom
option 150. With this method, you
configure the TFTP server IP address as the
option value. For additional supported
DHCP configurations, see the
documentation for your particular Cisco
Unified Communications Manager release.
Note If you cannot use option 150,
use DHCP option 66.
Phones use HTTP for XML services,
provisioning, upgrade and for
troubleshooting purposes.
Web applications with both HTTP and
HTTPS support have two URLs configured.
phones that support HTTPS choose the
HTTPS URL.
A lock icon is displayed to the user if the
connection to the service is via HTTPS.
The phone implements the IEEE 802.1X
standard through support for the following
authentication methods: EAP-FAST and
EAP-TLS.
When 802.1X authentication is enabled on
the phone, you should disable the voice
VLAN.