Cisco 7971G-GE Administration Guide - Page 93

Chapter 4 Configuring Settings on the Cisco Unified IP Phone Device Configuration Menu Table 4-18 Network Configuration Menu Options (continued) Option Peer Firmware Sharing Log Server CDP: PC Port Description To Change The Peer Firmware Sharing feature provides these advantages in high speed campus LAN settings: • Limits congestion on TFTP transfers to centralized TFTP servers • Eliminates the need to manually control firmware upgrades From Cisco Unified Communications Manager Administration, choose Device > Phone > Phone Configuration. • Reduces phone downtime during upgrades when large numbers of devices are reset simultaneously Peer Firmware Sharing may also aid in firmware upgrades in branch/remote office deployment scenarios over bandwidth-limited WAN links. When enabled, it allows the phone to discover like phones on the subnet that are requesting the files that make up the firmware image, and to automatically assemble transfer hierarchies on a per-file basis. The individual files making up the firmware image are retrieved from the TFTP server by only the root phone in the hierarchy, and are then rapidly transferred down the transfer hierarchy to the other phones on the subnet using TCP connections This menu option indicates whether the phone supports peer to peer image distribution. Settings include: • Enabled • Disabled-default Indicates the IP address and port of the remote logging machine to which the phone sends log messages. These log messages help in debugging the peer to peer image distribution feature. Note The remote logging setting does not affect the sharing log messages sent to the phone log. From Cisco Unified Communications Manager Administration, choose Device > Phone > Phone Configuration. Indicates whether CDP is enabled on the PC port (default is enabled). Enable CDP on the PC port when Cisco VT Advantage/Unified Video Advantage (CVTA) is connected to the PC port. CVTA does not work without CDP interaction with the phone. From Cisco Unified Communications Manager Administration, choose Device > Phone. Note When CDP is disabled in Cisco Unified Communications Manager, a warning is displayed, indicating that disabling CDP on the PC port prevents CVTA from working. The current PC and switch port CDP values are shown on the Settings menu. OL-15299-01 Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 7.0 4-27