Cisco Catalyst 3550 Command Reference Manual page 219

Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
Command
show ip source binding
show ip verify source
OL-8566-02
Description
Displays the IP source bindings on the switch.
Displays the IP source guard configuration on the switch or on a
specific interface.
Catalyst 3550 Multilayer Switch Command Reference
ip source binding
2-193