Cisco Catalyst 3550

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Catalyst 3550 Multilayer Switch Command Reference
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Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
ip verify source
ip verify source
Use the ip verify source interface configuration command to enable IP source guard on an interface.
Use the no form of this command to disable IP source guard.
ip verify source [port-security]
no ip verify source
Syntax Description
Defaults IP source guard is disabled.
Command Modes Interface configuration
Command History
Usage Guidelines To enable IP source guard with source IP address filtering, use the ip verify source interface
configuration command.
To enable IP source guard with source IP and MAC address filtering, use the ip verify source
port-security interface configuration command.
Examples This example shows how to enable IP source guard with source IP address filtering:
Switch(config-if)# ip verify source
This example shows how to enable IP source guard with source IP and MAC address filtering:
Switch(config-if)# ip verify source port-security
You can verify your settings by entering the show ip source binding privileged EXEC command.
Related Commands
port-security (Optional) Enable IP source guard with IP and MAC address filtering.
If you do not enter the port-security keyword, IP source guard with IP
address filtering is enabled.
Release Modification
12.2(25)SEA This command was introduced.
Command Description
ip source binding Configures static bindings on the switch.
show ip verify source Displays the IP source guard configuration on the switch or on a
specific interface.