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 source binding
ip source binding
Use the ip source binding global configuration command to configure static IP source bindings on the
switch. Use the no form of this command to delete static bindings.
ip source binding mac-address vlan vlan-id ip-address interface interface-id
no source binding mac-address vlan vlan-id ip-address interface interface-id
Syntax Description
Defaults No IP source bindings are configured.
Command Modes Global configuration
Command History
Usage Guidelines A static IP source binding entry has an IP address, its associated MAC address, and its associated VLAN
number. The entry is based on the MAC address and the VLAN number. If you modify an entry by
changing only the IP address, the switch updates the entry instead creating a new one.
Examples This example shows how to add a static IP source binding:
Switch(config)# ip source binding 0001.1234.1234 vlan 1 172.20.50.5 interface
gigabitethernet0/1
This example shows how to add a static binding and then modify the IP address for it:
Switch(config)# ip source binding 0001.1357.0007 vlan 1 172.20.50.25 interface
gigabitethernet0/1
Switch(config)# ip source binding 0001.1357.0007 vlan 1 172.20.50.30 interface
gigabitethernet0/1
You can verify your settings by entering the show ip source binding privileged EXEC command.
Related Commands
mac-address Specify a MAC address.
vlan vlan-id Specify a VLAN number. The range is from 1 to 4094.
ip-address Specify an IP address.
interface interface-id Specify an interface on which to add or delete an IP source binding.
Release Modification
12.2(25)SEA This command was introduced.
Command Description
ip verify source Enables IP source guard on an interface.