Cisco Ip Phone 7800 Series Administration Guide For Cisco Unified Communications Manager - Cisco 7800 series Administrator's Manual

Network Protocol
Dynamic Host
Configuration Protocol
(DHCP)
Hypertext Transfer
Protocol (HTTP)
IEEE 802.1X

Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager

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.
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.
Supported Network Protocols
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.
If you cannot use option
Note
150, use DHCP option 66.
Cisco IP Phones use HTTP for XML
services, provisioning, upgrade and
for troubleshooting purposes.
The Cisco IP 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 PC port and voice VLAN.
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