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What Networking Protocols are Used?
Table 1-2
Supported Networking Protocols on the Cisco Unified IP Phone (continued)
Networking Protocol
Hypertext Transfer
Protocol Secure (HTTPS)
IEEE 802.1X
Internet Protocol (IP)
Link Layer Discovery
Protocol (LLDP)
Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP and SIP)
1-6
Purpose
Hypertext Transfer Protocol Secure
(HTTPS) is a combination of the
Hypertext Transfer Protocol with the
SSL/TLS protocol to provide encryption
and secure identification of servers.
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.
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.
Chapter 1
An Overview of the Cisco Unified IP Phone
Usage Notes
Web applications with both HTTP and HTTPS
support have two URLs configured. Cisco Unified
IP Phones that support HTTPS choose the HTTPS
URL out of the two URLs.
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. Refer to
Supporting 802.1X Authentication
on Cisco Unified IP Phones, page 1-18
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 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
Version 6 (IPv6)
in the Cisco Unified
Communications Manager Features and Services
Guide.
The Cisco Unified IP Phone supports LLDP on the
PC port.
for
Internet Protocol
OL-21011-01
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Troubleshooting
