Command Line Interface
4-72
4
Example
Related Commands
dir (4-70) 
whichboot (4-71)
Cabletron Discovery Protocol (CDP)
The Cabletron Discovery Protocol (CDP) protocol enables a switch to discover the 
topology of other CDP-aware devices in the network. The protocol allows each 
switch to determine if other CDP-aware switches are adjacent to it. 
cdp authentication key
Use this command to set the code string that defines the CDP domain. Use the no 
form to restore the default.
Syntax 
cdp authentication key key_string
 
no cdp authentication key
key_string - The character string that defines the CDP domain. Do not use 
blank spaces in the string. (Maximum length: 16 characters)
Default Setting 
null string
Console(config)#boot system config: startup
Console(config)#
Table 4-24. CDP Commands 
Command Group Function Mode Page
cdp authentication key Sets the CDP domain to which the switch belongs GC 4-72
cdp holdtime Sets the time the switch waits for update CDP packets 
from neighbor devices
GC 4-73
cdp timer Specifies how often the switch sends CDP updates GC 4-74
cdp Sets the global switch CDP action.  GC 4-74
cdp Sets the CDP action for an interface IC 4-75
show cdp Displays the global CDP configuration settings PE 4-76
show cdp interface Displays CDP interface configuration settings PE 4-76
show cdp neighbors Displays information received from neighbor 
CDP-compliant devices
PE 4-76
show cdp traffic Displays CDP traffic statistics PE 4-78