Ip Source-Guard Binding - SMC Networks SMC8126L2 Management Manual

is static IP source guard binding, static DHCP snooping binding or dynamic
DHCP snooping binding, the packet will be forwarded.
- If IP source guard if enabled on an interface for which IP source bindings
(dynamically learned via DHCP snooping or manually configured) are not
yet configured, the switch will drop all IP traffic on that port, except for
DHCP packets.
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 (4-229)

ip dhcp snooping (4-231)
ip dhcp snooping vlan (4-233)
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. (Always unit 1)
• port - Port number. (Range: 1-28)
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 4-230).
• When source guard is enabled, traffic is filtered based upon dynamic entries
learned via DHCP snooping, static entries configured in the DHCP snooping
IP Source Guard Commands
4
4-229