Viproy VoIP Pen-Test Kit - Cisco CDP Testing Module

This modules is developed to send custom Cisco CDP packets and sniffing for the CDP packets in the network. It can be used to attack Cisco VLAN environment or voice VLANs. 

Viproy VoIP Penetration Testing Kit Homepage
http://www.viproy.com

Usage sample for sniffing:
set INTERFACE en5
set ACTION Sniffer
run
jobs

Usage sample for spoofing:
use auxiliary/spoof/cisco/viproy_cdp
show options 
set INTERFACE en5
set ACTION Spoof 
run

Sample packet capture:
http://www.viproy.com/captures/viproy_cdp.pcapng