Cisco 6901 Administration Manual page 19

Chapter 1 An Overview of the Cisco Unified IP Phone
Table 1-3 Supported Networking Protocols on the Cisco Unified IP Phone (continued)
Networking Protocol
IEEE 802.1X
Internet Protocol (IP)
Link Layer Discovery
Protocol (LLDP)
(Cisco Unified IP Phone
6911 only)
Link Layer Discovery
Protocol-Media Endpoint
Devices (LLDP-MED)
Real-Time Transport
Protocol (RTP)
Cisco Unified IP Phone 6901 and 6911 Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)
OL-24582-01
Purpose
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 successful
authentication, normal traffic passes
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.
LLDP-MED is an extension of the LLDP
standard developed for voice products.
RTP is a standard protocol for transporting
real-time data, such as interactive voice
and video, over data networks.
What Networking Protocols are Used?
Usage Notes
The Cisco Unified IP Phone implements the IEEE
802.1X standard by providing 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. Refer to
the "Supporting 802.1X Authentication on Cisco
Unified IP Phones" section on page 1-16
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 Phones support IPv6 address.
For more information, see
6 (IPv6) in the Cisco Unified Communications
Manager Features and Services Guide.
The Cisco Unified IP Phone supports LLDP on the
switch and PC port.
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/technologies/tk652/tk
701/technologies_white_paper0900aecd804cd46d.
html
Cisco Unified IP Phones use the RTP protocol to
send and receive real-time voice traffic from other
phones and gateways.
for
Internet Protocol Version
1-7