Commands under implementation:
1. show cdp neighbor detail (shows neighbors IP address without configuring TCP/IP)
2. DHCP configuration commands
note: CDP detects neighbor Cisco devices even without configuring TCP/IP. Therefore, appropriate changes are to be made to the show cdp neighbors command to display neighbor Cisco devices.
Example:
Router#show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater
Device ID Local Intrfce Holdtme Capability Platform Port ID
lab-7206 Eth 0 157 R 7206VXR Fas 0/0/0
lab-as5300-1 Eth 0 163 R AS5300 Fas 0
lab-as5300-2 Eth 0 159 R AS5300 Eth 0
lab-as5300-3 Eth 0 122 R AS5300 Eth 0
lab-as5300-4 Eth 0 132 R AS5300 Fas 0/0
Device ID: The configured ID (name), MAC address, or serial number of the neighbor device.
Local Intrfce: (Local Interface) The protocol being used by the connectivity media.
Holdtme: The remaining amount of time, in seconds, the current device will hold the CDP advertisement from a transmitting router before discarding it.
Capability
The capability code discovered on the device. This is the type of the device listed in the CDP Neighbors table. Possible values are:
R?Router
T?Transparent bridge
B?Source-routing bridge
S?Switch
H?Host
I?IGMP device
r?Repeater
Platform: The product number of the device.
Port ID: The protocol and port number of the device.