Usage notes
Purpose
Network protocol
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. For more
information, see
Authentication, on page 76
.
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.
IEEE 802.1X
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.
IP is a messaging protocol that addresses and
sends packets across the network.
Internet Protocol (IP)
The Cisco Unified IP Phone
supports LLDP on the PC
port.
LLDP is a standardized network discovery
protocol (similar to CDP) that is supported on
some Cisco and third-party devices.
Link Layer Discovery
Protocol (LLDP)
Cisco Unified IP Phone 8941 and 8945 Administration Guide for Cisco Unified Communications Manager 10.0 (SCCP
and SIP)
11
Network Protocols
