Cisco Ip Phone 8800 Series Administration Guide For Cisco Unified Communications Manager - Cisco 8811 Administration Manual

Network Protocols
Network protocol
IEEE 802.1X
IEEE 802.11n/802.11ac
Internet Protocol (IP)
Link Layer Discovery Protocol
(LLDP)

Cisco IP Phone 8800 Series Administration Guide for Cisco Unified Communications Manager

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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
authentication is successful, normal traffic can pass through
the port.
The IEEE 802.11 standard specifies how devices
communication over a wireless local area network (WLAN).
802.11n operates at the 2.4 GHz and 5 GHz band and
802.11ac operates at the 5 GHz band.
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.
Usage notes
The Cisco 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 PC port and voice
VLAN.
The 802.11 interface is a
deployment option for cases when
Ethernet cabling is unavailable or
undesirable.
Only Cisco IP Phone 8861 and
8865 support WLAN.
To communicate using IP, network
devices must have an assigned IP
address, subnet, and gateway.
IP addresses, subnets, and gateway
identifications are automatically
assigned if you are using the Cisco
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 IP Phones support IPv6
addresses. For more information,
see the documentation for your
particular Cisco Unified
Communications Manager release.
The Cisco IP Phone supports
LLDP on the PC port.