Cisco 8831 Administration Manual page 26

Network protocols
Networking Protocol
Hypertext Transfer
Protocol (HTTP)
IEEE 802.1X
Internet Protocol (IP)
Cisco Unified IP Conference Phone 8831 Administration Guide for Cisco Unified Communications Manager
9.0
16
Purpose
HTTP is the standard way of transferring
information and moving documents
across the Internet and the web.
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.
IP is a messaging protocol that addresses
and sends packets across the network.
Cisco Unified IP Conference Phone 8831
Usage Notes
Cisco Unified IP Phones use HTTP
for:
• Configuration file downloads
• XML services
• Firmware upgrades
• Troubleshooting purposes
Cisco Unified IP Conference Phone
8831 implements the IEEE 802.1X
standard by providing support for
EAP-FAST and EAP-TLS
authentication.
To communicate using IP, network
devices must 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 Conference Phone 8831
with Dynamic Host Configuration
Protocol (DHCP). If you are not
using DHCP, you must manually
assign these properties to each phone
locally.
For more information, see the Cisco
Unified Communications Manager
Features and Services Guide.