Def­i­n­i­tions: A trunk con­nec­tion is a con­nec­tion between two switches. Tools Yersinia is a lay­er 2 mod­i­fi­ca­tion framework. VoIPHop­per is a sim­ple tool which can sniff VoIP traf­fic and out­put the VLAN ID from the VoIP net­work:voiphopper -c 0 -i eth0 Enumerate existing VLANs Start Yersiniayersinia -I Press g Select DTP Press 5 to see…