The Cisco Unified CCX system uses the CDP to periodically send out CDP messages to a designated
multicast address. These messages contain information such as device identification, interface name,
system capabilities, SNMP agent address, and time-to-live. Any Cisco device with CDP support can
locate a Cisco Unified CCX server by monitoring these periodic messages.

Using information provided through CDP, the CiscoWorks server discovers your Cisco Unified CCX
server and the Campus Manager application Topology Services builds topology maps that display the
Cisco Unified CCX server and other Cisco devices.

CDP is enabled on the Cisco Unified CCX system by default. You must have the CDP driver enabled at
all times for CiscoWorks to discover the Cisco Unified CCX server.

Note

The Windows 2003 CDP Protocol Driver is designed to run with Cisco Unified CCX on a Cisco Media
Convergence Server (MCS) with a 10/100BaseT Ethernet network interface card under Windows 2003
Server. It does not support other media, such as Token Ring, ATM, or Windows NT platforms (including
Windows 98 or Windows NT 4.0).