Cisco 7800 Series Administration Manual page 190

Network Setup
Item
CDP: SW Port
CDP: PC Port
LLDP-MED: SW Port
LLDP: PC Port
LLDP Power Priority
LLDP Asset ID
CTL File
ITL File
ITL Signature
Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager
176
Cisco IP Phone Troubleshooting
Description
Indicates whether CDP support exists on the switch
port (default is enabled).
Enable CDP on the switch port for VLAN assignment
for the phone, power negotiation, QoS management,
and 802.1x security.
Enable CDP on the switch port when the phone
connects to a Cisco switch.
When CDP is disabled in Cisco Unified
Communications Manager, a warning is presented,
indicating that CDP should be disabled on the switch
port only if the phone connects to a non-Cisco switch.
The current PC and switch port CDP values are shown
on the Settings menu.
Indicates whether CDP is supported on the PC port
(default is enabled).
When CDP is disabled in Cisco Unified
Communications Manager, a warning is displays to
indicate that disabling CDP on the PC port prevents
CVTA from working.
The current PC and switch port CDP values are shown
in the Settings menu.
Indicates whether Link Layer Discovery Protocol
Media Endpoint Discovery (LLDP-MED) is enabled
on the switch port.
Indicates whether Link Layer Discovery Protocol
(LLDP) is enabled on the PC port.
Advertises the phone power priority to the switch,
thus enabling the switch to appropriately provide
power to the phones. Settings include:
• Unknown: This is the default value.
• Low
• High
• Critical
Identifies the asset ID that is assigned to the phone
for inventory management.
Identifies the CTL file.
The ITL file contains the initial trust list.
Enhances security by using the secure hash algorithm
(SHA-1) in the CTL and ITL files.