NGFW

Cisco

Cisco Discovery Protocol

sh cdp neighbor

VLAN Trunking Protocol

sh vtp status
vlan database

Fortigate

diagnose sniffer packey any 'host 172.0.0.1' 4

diagnose debug reset 
diagnose debug flow filter addr 172.0.0.1
diagnose debug flow show function-name enable 
# show function name
diagnose debug flow show iprope enable 
# show trace messages about iprope
diagnose debug enable 
diagnose debug flow trace start 50