Cisco 3905 Administration Manual page 22

Supported Networking Protocols
Networking Protocol
Hypertext Transfer
Protocol (HTTP)
IEEE 802.1X
Internet Protocol (IP)
Link Layer Discovery
Protocol (LLDP)
Cisco Unified SIP Phone 3905 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
8
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.
LLDP is a standardized network
discovery protocol (similar to CDP)
that is supported on some Cisco and
third-party devices.
Cisco Unified IP Phone
Usage Notes
Cisco Unified IP Phones use HTTP for
troubleshooting purposes.
The Cisco Unified IP Phone implements the
IEEE 802.1X standard by providing support
for the MD5 authentication method.
When 802.1X authentication is enabled on
the phone, you should disable the voice
VLAN. See the Security Configuration
Menu, on page 44 for additional
information.
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 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 LLDP
on the switch and PC port.