Troubleshooting; Mac Address Function Extension; Mac Address Binding - Edge-Core ES3628EA User Manual

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6.5 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:
The connected cable is broken.
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.
If not the problems mentioned above , please check for the switch port and contact
technical support for solution.

6.6 MAC Address Function Extension

6.6.1 MAC Address Binding

6.6.1.1 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.
6.6.1.2 MAC Address Binding Configuration Task List
1. Enable MAC address binding function for the ports
2. Lock the MAC addresses for a port
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