Usage notesPurposeNetwork Protocol
Cisco Unified IP Phones use HTTP
for troubleshooting purposes.
HTTP is the standard way of
transferring information and
moving documents across the
Internet and the web.
Hypertext Transfer Protocol
(HTTP)
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 802.1X Authentication, on page
22 for additional information.
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
connects. After successful
authentication, normal traffic
passes 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
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 “Internet Protocol
Version 6 (IPv6)” in the Cisco
Unified Communications Manager
Features and Services Guide.
IP is a messaging protocol that
addresses and sends packets across
the network.
Internet Protocol (IP)
The Cisco Unified IP Phone 6911
supports LLDP on the switch and
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 6911 only)
Cisco Unified IP Phone
12
Cisco Unified IP Phone
Network Protocols
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