Amer Networks SS2R48G4i V2 - Manual (Page 93)

SS2R24G4i/SS2R48G4i
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8.4.2 Troubleshooting
Using the show mac-address-table command, a port is found to be failed to learn the MAC of a
device connected to it. Possible reasons
z The connected cable is broken.
z Spanning Tree is enabled and the port is in “discarding” status; or the device is just connected to the
port and Spanning Tree is still under calculation, wait until the Spanning Tree calculation finishes,
and the port will learn the MAC address.
z If not the problems mentioned above , please check for the switch portand contact technical support
for solution.
8.5 MAC Address Function Extension
8.5.1 MAC Address Binding
8.5.1.1 Introduction to MAC Address Binding
Most switches support MAC address learning, each port can dynamically learn several MAC
addresses, so that forwarding data streams between known MAC addresses within the ports can be
achieved. If a MAC address is aged, the packet destined for that entry will be broadcasted. In other
words, a MAC address learned in a port will be used for forwarding in that port, if the connection is
changed to another port, the switch will learn the MAC address again to forward data in the new port.
However,in some cases, security or management policy may require MAC addresses to be bound
with the ports, only data stream from the binding MAC are allowed to be forwarded in the ports. That is
to say, after a MAC address is bound to a port, only the data stream destined for that MAC address can
flow in from the binding port, data stream destined for the other MAC addresses that not bound to the
port will not be allowed to pass through the port.
8.5.1.2 MAC Address Binding Configuration
8.5.1.2.1 MAC Address Binding Configuration Task List
1.Enable MAC address binding function for the ports
2.Lock the MAC addresses for a port
3.MAC address binding property configuration