Specifications

1-5
Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 8.0
OL-21033-01
Chapter 1 An Overview of the Cisco Unified IP Phone
What Networking Protocols are Used?
IEEE 802.1X 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.
The Cisco Unified IP Phone implements the IEEE 802.1X
standard by providing support for the following
authentication methods: EAP-FAST, EAP-TLS, and
EAP-MD5.
When 802.1X authentication is enabled on the phone, you
should disable the PC port and voice VLAN. See Supporting
802.1X Authentication on Cisco Unified IP Phones,
page 1-16 for additional information.
Internet Protocol (IP) IP is a messaging protocol that
addresses and sends packets across
the network.
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 concurrent IPv4 and
IPv6 addresses. Configure the IP addressing mode (IPv4
only, IPv6 only, and both IPv4 and IPv6) in Cisco Unified
Communications Manager Administration. For more
information, refer to Internet Protocol Version 6 (IPv6) in the
Cisco Unified Communications Manager Features and
Services Guide.
Link Layer Discovery
Protocol (LLDP)
LLDP is a standardized network
discovery protocol (similar to CDP)
that is supported on some Cisco and
third-party devices.
The Cisco Unified IP Phone supports LLDP on the PC port.
Link Layer Discovery
Protocol-Media
Endpoint Devices
(LLDP-MED)
LLDP-MED is an extension of the
LLDP standard developed for voice
products.
The Cisco Unified IP Phone supports LLDP-MED on the SW
port to communicate information such as:
• Voice VLAN configuration
• Device discovery
• Power management
• Inventory management
For more information about LLDP-MED support, see the
LLDP-MED and Cisco Discovery Protocol white paper:
http://www.cisco.com/en/US/tech/tk652/tk701/technologies
_white_paper0900aecd804cd46d.shtml
Table 1-2 Supported Networking Protocols on the Cisco Unified IP Phone (continued)
Networking Protocol Purpose Usage Notes