3Com 4500 PWR 26-Port Configuration Manual page 203

16
Port Binding Configuration
Wh n configuring port binding, go to these sections for infor e
Port Binding Overview
Displaying and Maintaining Port Binding Configuration
Port Binding Configuration
Port Bindin g Overview
Introd uction
Binding is a simple security mechanism. Through the binding configuration on the switch, you can filter
the packets forwarded on the ports. When a port r
information carried in the packet matches the information in
packet. Otherwise, the port discards the packet.
Curr ently, the switch provides the following binding
Port-IP binding: binds a port to an IP address. On the bound port, the switch forwards only the
packets sourced from the bound IP address.
Port-MAC binding: binds a port to a MAC address. On the bound port, the switch forwards only the
packets sourced from the bound MAC address.
Port-MAC-IP binding: binds a MAC address and an IP address to a port. On the port, if the source
IP address of a received packet matches a binding entry, the port forwards the packet on
source MAC address of the packet also matches the entry. If the source IP address of a packet
does not match any entry in the port-MAC-IP binding table, the port forw
IP-MAC binding: binds an IP address to a MAC address. The switch forwards only the packets
sour ced from the bound source MAC address and source IP address.
When a port is bound, the binding applies only to the port.
Conf iguring Port Binding
Follow these steps to configure port binding:
Example
eceives a packet, it searches the binding entry. If the
policies:
16-1
mation you are interested in:
the binding entry, the port forwards the
ards the packet.
ly if the