4 mac table troubleshooting, 5 mac address function extension, 1 mac address binding – PLANET WGSW-52040 User Manual
Page 189: 1 introduction to mac address binding, Able, Roubleshooting, Ddress, Unction, Xtension, 1 mac address binding -111
Scenario:
Four PCs as shown in the above figure connect to port 1/5, 1/7, 1/9, 1/11 of switch, all the four
PCs belong to the default VLAN1. As required by the network environment, dynamic learning
is enabled. PC1 holds sensitive data and can not be accessed by any other PC that is in
another physical segment; PC2 and PC3 have static mapping set to port 1/7 and port 1/9,
respectively.
The configuration steps are listed below:
1. Set the MAC address 00-01-11-11-11-11 of PC1 as a filter address.
Switch(config)#mac-address-table static 00-01-11-11-11-11 discard vlan 1.
2.Set the static mapping relationship for PC2 and PC3 to port 1/7 and port 1/9, respectively.
Switch(config)#mac-address-table static address 00-01-22-22-22-22 vlan 1 interface
ethernet 1/7
Switch(config)#mac-address-table static address 00-01-33-33-33-33 vlan 1 interface
ethernet 1/9
21.4 MAC Table 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 portand contact
technical support for solution.
21.5 MAC Address Function Extension
21.5.1 MAC Address Binding
21.5.1.1 Introduction to MAC Address Binding
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