https://www.bytesizedalex.com/configure-cisco-sg300-switch-layer-3-mode/
The Cisco SG300 switch series can act as a standard layer 2 switch or be enabled for layer 3 functionality. Typically the switch will come in layer 2 mode (also called switch mode in the CLI). There are a couple of ways layer 3 functionality can be enabled and I will demonstrate them both below.
Command Line Configuration
To configure the SG300 to layer 3 or router mode through the command line is very easy. Log in through your SSH client of choice and leverage the ‘set system mode’ command. Here you see I have entered part of the command and then hit enter so that it shows the possible options for command completion.
SG300-20#set system mode
router System will run as a IP router
switch System will run as a switch
In our case, we want to enable router mode which is of course layer 3 functionality.
SG300-20#set system mode router
The Cisco SG300 switch series can act as a standard layer 2 switch or be enabled for layer 3 functionality. Typically the switch will come in layer 2 mode (also called switch mode in the CLI). There are a couple of ways layer 3 functionality can be enabled and I will demonstrate them both below.
Command Line Configuration
To configure the SG300 to layer 3 or router mode through the command line is very easy. Log in through your SSH client of choice and leverage the ‘set system mode’ command. Here you see I have entered part of the command and then hit enter so that it shows the possible options for command completion.
SG300-20#set system mode
router System will run as a IP router
switch System will run as a switch
In our case, we want to enable router mode which is of course layer 3 functionality.
SG300-20#set system mode router
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