Configuring Dynamic Binding Function - 3Com 4510G Configuration Manual

To do...
Configure a static binding entry
The system does not support repeatedly binding a binding entry to one port.
For products supporting multi-port binding, a binding entry can be configured to multiple ports; for
products that do not support multi-port binding, a binding entry can be configured to only one port.
Supported binding entry types vary by device.
In a valid binding entry, the MAC address cannot be all 0s, all Fs (a broadcast address), or a
multicast address, and the IP address can only be a Class A, Class B, or Class C address and can
be neither 127.x.x.x nor 0.0.0.0.
A static binding entry can be configured on only Layer-2 Ethernet ports.

Configuring Dynamic Binding Function

After the dynamic binding function is enabled on a port, IP source guard will receive and process
corresponding DHCP snooping or DHCP relay entries, which contain such information as MAC
address, IP address, VLAN tag, port information or entry type. It adds the obtained information to the
dynamic binding entries to enable the port to filter packets according to the binding entries.
Follow these steps to configure port filtering:
To do...
Enter system view
Enter interface view
Configure dynamic binding
function
The dynamic binding function can be configured on Layer-2 Ethernet ports and VLAN interfaces.
A port takes only the latest dynamic binding entries configured on it.
Use the command...
user-bind { ip-address ip-address |
ip-address ip-address mac-address
mac-address | mac-address
mac-address } [ vlan vlan-id ]
Use the command...
system-view
interface interface-type
interface-number
ip check source { ip-address
| ip-address mac-address |
mac-address }
7-2
Remarks
Required
No static binding entry
exists by default.
Remarks
—
—
Required
Not configured by default