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4
Command Line Interface
Example
This example enables IP source guard on port 5.
Console(config)#interface ethernet 1/5
Console(config-if)#ip source-guard sip
Console(config-if)#
Related Commands
ip source-guard binding (4-310)
ip dhcp snooping (4-301)
ip dhcp snooping vlan (4-303)
ip source-guard binding
This command adds a static address to the source-guard binding table. Use the no
form to remove a static entry.
Syntax
ip source-guard binding mac-address vlan vlan-id ip-address
interface ethernet unit/port
no ip source-guard binding mac-address vlan vlan-id
• mac-address - A valid unicast MAC address.
• vlan-id - ID of a configured VLAN (Range: 1-4094)
• ip-address - A valid unicast IP address, including classful types A, B or C.
• unit - Stack unit. (Range: 1)
• port - Port number. (Range: 1-10)
Default Setting
No configured entries
Command Mode
Global Configuration
Command Usage
• Table entries include a MAC address, IP address, lease time, entry type
(Static-IP-SG-Binding, Dynamic-DHCP-Binding, Static-DHCP-Binding),
VLAN identifier, and port identifier.
• All static entries are configured with an infinite lease time, which is indicated
with a value of zero by the show ip source-guard command (page 4-311).
• When source guard is enabled, traffic is filtered based upon dynamic entries
learned via DHCP snooping, static entries configured in the DHCP snooping
table, or static addresses configured in the source guard binding table with
this command.
• Static bindings are processed as follows:
- If there is no entry with same VLAN ID and MAC address, a new entry is
added to binding table using the type of static IP source guard binding.
4-310
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