Re: Cisco SG300 not accessing after L3 mode selection

bilaldotcom · ‎06-10-2023

Hi,

I am facing an issue that when I select L3 mode in Cisco SG 300 smart switch it is not accessing after restart.

Switch is working fine after restart but the IP it was configured neither pinging not opening in browser.

Please help as what can be the new IP after L3 mode selection?

marce1000 · ‎06-10-2023

- Check if you can access it to the default ip address : 192.168.1.254 , and or don't forget to save the configuration after changes ,

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

bilaldotcom · ‎06-10-2023

I have checked, it is not accessing on 192.168.1.254 IP.

marce1000 · ‎06-10-2023

- I would suggest that you factory reset the device , then select L3 mode and configure according to your needs again,

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

bilaldotcom · ‎06-10-2023

After resetting and enabling L3 mode, it will again not accessible then what will i do? How can i know what IP is assigning to switch after L3 mode enabled.

marce1000 · ‎06-10-2023

- You should be able to use 192.168.1.254 , after factory reset , then select L3 mode again , and see that this can work ,

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

marce1000 · ‎06-10-2023

- By the way , if you still have difficulties knowing the IP address of the SG300 , being in L3 mode or not , connect it to another switch and on that switch issue the command show cdp neighbors detail , you should be able to see it ,

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

Richard Burts · ‎06-10-2023

It would be helpful to know what else you have configured besides selecting L3. When operating in L2 it would use default-gateway to be able to reach remote IP addresses. When you change to L3 mode that command is ignored, so you need either some routing information about specific remote subnets or you need an default route configured.

HTH

Rick