Cisco 7906G - Unified IP Phone VoIP Administration Manual page 23

Chapter 1 An Overview of the Cisco Unified IP Phone
Table 1-1 Supported Networking Protocols on the Cisco Unified IP Phone
Networking Protocol
Bootstrap Protocol
(BootP)
Cisco Discovery
Protocol (CDP)
Cisco Peer-to-Peer
Distribution Protocol
(CPPDP)
Dynamic Host
Configuration Protocol
(DHCP)
Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 6.1
OL-14585-01
Purpose
BootP enables a network device such
as the Cisco Unified IP Phone to
discover certain startup information,
such as its IP address.
CDP is a device-discovery protocol
that runs on all Cisco-manufactured
equipment.
Using CDP, a device can advertise its
existence to other devices and receive
information about other devices in
the network.
CPPDP is a Cisco proprietary
protocol used to form a peer-to-peer
hierarchy of devices. CPPDP is also
used to copy firmware or other files
from peer devices to neighboring
devices.
DHCP dynamically allocates and
assigns an IP address to network
devices.
DHCP enables you to connect an IP
phone into the network and have the
phone become operational without
your needing to manually assign an
IP address or to configure additional
network parameters.
What Networking Protocols Are Used?
Usage Notes
If you are using BootP to assign IP
addresses to the
Cisco Unified IP Phone, the BOOTP
Server option shows "Yes" in the
network configuration settings on the
phone.
The Cisco Unified IP Phone uses
CDP to communicate information
such as auxiliary VLAN ID, per port
power management details, and
Quality of Service (QoS) configuration
information with the Cisco Catalyst
switch.
CPPDP is used by the Peer Firmware
Sharing feature.
DHCP is enabled by default. If
disabled, you must manually
configure the IP address, subnet
mask, gateway, and a TFTP server on
each phone locally.
Cisco recommends that you use
DHCP custom option 150. With this
method, you configure the TFTP
server IP address as the option value.
For additional information about
DHCP configurations, refer to the
"Cisco TFTP" chapter in the
Cisco Unified Communications
Manager System Guide.
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