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Catalyst 3750 SwitchSoftware Configuration Guide
OL-8550-09
Chapter22 Configuring DHCP Features and IP Source Guard Features
Configuring IP Source Guard
To disable IP source guard with source IP address filtering, use the no ip verify source interface
configuration command.
To delete a static IP source binding entry, use the no ip source global configuration command.
This example shows how to enable IP source guard with source IP and MAC filtering on VLANs 10
and 11:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# interface gigabitethernet1/0/1
Switch(config-if)# ip verify source port-security
Switch(config-if)# exit
Switch(config)# ip source binding 0100.0022.0010 vlan 10 10.0.0.2 interface
gigabitethernet1/0/1
Switch(config)# ip source binding 0100.0230.0002 vlan 11 10.0.0.4 interface
gigabitethernet1/0/1
Switch(config)# end
Configuring IP Source Guard for Static Hosts
Configuring IP Source Guard for Static Hosts on a Layer 2 Access Port, page22-22
Configuring IP Source Guard for Static Hosts on a Private VLAN Host Port, page22-26

Configuring IP Source Guard for Static Hosts on a Layer 2 Access Port

Note You must configure the ip device tracking maximum limit-number interface configuration command
globally for IPSG for static hosts to work. If you only configure this command on a port without enabling
IP device tracking globally or by setting an IP device tracking maximum on that interface, IPSG with
static hosts rejects all the IP traffic from that interface. This requirement also applies to IPSG with static
hosts on a private VLAN host port.
Beginning in privileged EXEC mode:
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 ip device tracking Turn on the IP host table, and globally enable IP device
tracking.
Step3 interface interface-id Enter interface configuration mode.
Step4 switchport mode access Configure a port as access.
Step5 switchport access vlan vlan-id Configure the VLAN for this port.