2 show mac-address-table static, 3 show mac-address-table blackhole, 2 troubleshooting help – Accton Technology ES4710BD User Manual
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ES4710BD 10 Slots L2/L3/L4 Chassis Switch
8.4.1.2 show mac-address-table static
Command: show mac-address-table [static] [address <mac-addr>] [vlan <vlan-id>] [interface
<interface-name>]
Function: Displays the content of the current MAC table in the switch.
Parameters: static stands for static entries;
displayed;
the port names of the entries to be displayed
Command mode: Admin Mode
Default: MAC table content is not displayed by default.
Usage Guide: This command can be used to display static and dynamic MAC address entries in
categorized view, you can also use the “show mac-address-table” command to display all MAC
entries in the switch.
Example: Displaying the static entries in the MAC table.
Switch#show mac-address-table static
8.4.1.3 show mac-address-table blackhole
Command: show mac-address-table blackhole [address <mac-addr>] [vlan <vlan-id>]
Function: Displays the filter entries of the current MAC table.
Parameters: blackhole stands for filter entries;
to be displayed;
Command mode: Admin Mode
Default: Filter MAC entries are not displayed by default.
Usage Guide: This command can be used to display all filter MAC address entries in categorized
view.
Example: Displaying the filter entries in the MAC table.
Switch#show mac-address-table blackhole
8.4.2 Troubleshooting Help
Using the show mac-address-table command, it has been discovered that a port has failed to
learn the MAC of a device connected to it. Possible reasons:
)
The connected cable is broken. Replace the cable.
)
Spanning Tree has started and the port is in “discarding” status; or the device was recently
connected to the port and Spanning Tree is still under calculation. Wait until the Spanning Tree
calculation finishes. The port will then learn the MAC address.
)
If not the above-mentioned problem, please check for port healthy and contact technical