I have cisco SG300-28P series managed switch. I'd like to change default ip which is ( When I am trying to connect the switch using ethernet cable it is shown me there is no access, even I have put static ip to my laptop in the same default subnet ip.

My question is: Is there a way to connect the switch without doing reset? additional thing, I am seeing console serial port at the back of switch. It is first time to see that console which is looks like serial cable.


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1 Answer 1


Using a serial cable, connect that console port to the serial port on your computer (or a USB adapter), load up a terminal program, set it to 19,200115,200 Baud (thx jonathanjo), 8N1 and hit . Other devices use e.g. 19,200 or 38,400 Bd by default.

  • 2
    Just a comment about baud rate: manual says "115200 bits per second (with release 1.2.5 of the firmware, autobaud detection is enabled by default, so the switch should detect the speed after you press Enter)." cisco.com/c/dam/en/us/td/docs/switches/lan/csbms/sf30x_sg30x/…
    – jonathanjo
    Nov 29, 2018 at 12:29
  • 1
    Thx @jonathanjo - I was too lazy to look that up actually. ;-)
    – Zac67
    Nov 29, 2018 at 17:59

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