D-Link DI-1750 Reference Manual page 147

5.12.2 Configuring the enable of global fast-switch
You must enable the global fast-switch function in the global configurative mode before you configure
the fast-switch on interface.
Ip fast-switch enable
[DEFAULT@Router /config/]#ip
......
(08)fast-switch
(09)forward-protocol
......
Please Input the code of command to be excute(0-20): 8
(00)enable
(01)cache-size
(02)timeout
Please Input the code of command to be excute(0-2): 0
Will you excute it? (Y/N):y
Command
Fast switching configuration commands
Controls forwarding of directed IP broadcasts
Enable fast-switch
Cache size of fast-switch
Cache timeout
Model Name
Purpose
Enable global fast-switch
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