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Client Security Commands
4
Example
This example maps enables IP source guard on port 5.
Console(config)#interface ethernet 1/5
Console(config-if)#ip source-guard sip
Console(config-if)#
Related Command
ip source-guard binding (4-113)
ip dhcp snooping (4-115)
ip dhcp snooping vlan (4-117)
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 mac-address vlan vlan-id ip-address
interface ethernet unit/port
no ip source-guard mac-address vlan vlan-id
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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: 1-24)
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), 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 4-114).
• When source guard is enabled, traffic is filtered based upon dynamic entries
learned via DHCP snooping, 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.
4-113