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The Cisco SG300-28 switch has the default password of cisco. The password is case sensitive so it must be entered that exact way—don't capitalize Cisco!
Along with this password, like most Cisco devices, the SG300-28 uses the default username of cisco to login with administrative privileges.
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To access the Cisco SG300-28 switch, use the default IP address192.168.1.254. It needs to be entered into the web browser's navigation bar where URL's go.
Default passwords are sometimes different for certain hardware or firmware version, but what's described above should work for any SG300-28 switch. This information is also valid for other Cisco SG300 switches, like the SG300-10, SG300-10MP, SG300-10P, SG300-20, SG300-28P, and SG300-52.
What to Do If the Cisco SG300 Default Username or Password Doesn't Work
It's important to secure any managed network hardware by changing the default login information. If you don't, anyone with network access can be granted administrator rights. If you've taken this wise step, then the above information won't work.
However, if you've forgotten what you've changed the password to—which is likely if you made it really complex—you can easily reset it to the factory defaults to restore the username and password to cisco.
Resetting is not the same as restarting the switch; the former restores the username and password while the latter simply shuts down the switch and then starts it back up.
You'll need physical access to the switch to reset it. Here's how it's done:
Make sure your SG300-28 is powered on and then turn it to its backside so you can see the cables.
Disconnect the switch from the network.
Find the small hole on the back (the Reset button) and press and hold it down for 5-10 seconds with something pointy, like a paperclip or pin.
Unplug the power cable from the switch for a few seconds and then reattach it.
Provide enough time for the switch to fully turn back on—a few minutes at most.
Reconnect the SG300-28 switch to the network.
Log in to the switch at http://192.168.1.254 using cisco as both the username and password.
Change the default switch password to something more secure. See these examples of a strong password if you're not sure how to make one.
If you have to, consider storing the new, strong password in a password manager so that it's easier to 'remember.'
Any custom settings that were previously stored in the switch will now have to be reconfigured.
What to Do If You Can't Access the SG300-28 Switch
If 192.168.1.254 isn't your Cisco SG300-28 IP address, it just means that someone has changed it to something else, similar to how you can change the username and password.
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For most networks, if your switch's default IP address has been changed, the new IP address can be determined using tracert, a command available from the Command Prompt in Windows.
See How to Identify Network Hardware IP Addresses on a Local Network if you need help using that command to find the SG300-28 default IP.
Resetting the SG300-28 switch will not only restore the username and password but also the default IP address. If you still can't access the switch using its IP address after a full reset, there's probably an issue with its physical connection. Trace the device's cables from the switch outward to see if there are any missing connections or bad wires.
Cisco SG300-28 Manual & Firmware Download Links
The Cisco SG300-28 Support page on Cisco's website is the official location of all things related to the switch, be it downloads, videos, or documentation.
From this link, you can find the Cisco SG300-28 Downloads page (in the Downloads tab) where you can get the latest firmware and managed switch MIB downloads. All of the firmware files use the .ROS file extension, but depending on the version you choose to download, you might get it in a ZIP archive that you have to open before finding the firmware file.
Switches that are available as different hardware versions will usually use unique firmware, making it vitally important to download the right one for your specific device. The Cisco SG300-28 switch, however, doesn't have any other hardware versions, so the firmware you find through the link above is the same firmware for all SG300-28 switches ever made.
The Cisco SG300-28 Documentation page (through the Documentation tab) holds all the brochures, command references, data sheets, install/upgrade guides, release notes, and other related documents for the device. This Cisco SG300-28 Quick Start Guide is a direct link to the PDF file that can help you set up your switch.
Most if not all of the documents you can download from Cisco regarding the SG300-28 switch, are in the PDF format. You can use a free PDF reader to open them, like Sumatra PDF if you're using Windows.
The Cisco SG300-28 switch has the default password of cisco. The password is case sensitive so it must be entered that exact way—don't capitalize Cisco!
Along with this password, like most Cisco devices, the SG300-28 uses the default username of cisco to login with administrative privileges.
To access the Cisco SG300-28 switch, use the default IP address192.168.1.254. It needs to be entered into the web browser's navigation bar where URL's go.
Default passwords are sometimes different for certain hardware or firmware version, but what's described above should work for any SG300-28 switch. This information is also valid for other Cisco SG300 switches, like the SG300-10, SG300-10MP, SG300-10P, SG300-20, SG300-28P, and SG300-52.
What to Do If the Cisco SG300 Default Username or Password Doesn't Work
It's important to secure any managed network hardware by changing the default login information. If you don't, anyone with network access can be granted administrator rights. If you've taken this wise step, then the above information won't work.
However, if you've forgotten what you've changed the password to—which is likely if you made it really complex—you can easily reset it to the factory defaults to restore the username and password to cisco.
Resetting is not the same as restarting the switch; the former restores the username and password while the latter simply shuts down the switch and then starts it back up.
You'll need physical access to the switch to reset it. Here's how it's done:
Make sure your SG300-28 is powered on and then turn it to its backside so you can see the cables.
Disconnect the switch from the network.
Find the small hole on the back (the Reset button) and press and hold it down for 5-10 seconds with something pointy, like a paperclip or pin.
Unplug the power cable from the switch for a few seconds and then reattach it.
Provide enough time for the switch to fully turn back on—a few minutes at most.
Reconnect the SG300-28 switch to the network.
Log in to the switch at http://192.168.1.254 using cisco as both the username and password.
Change the default switch password to something more secure. See these examples of a strong password if you're not sure how to make one.
If you have to, consider storing the new, strong password in a password manager so that it's easier to 'remember.'
Any custom settings that were previously stored in the switch will now have to be reconfigured.
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What to Do If You Can't Access the SG300-28 Switch
If 192.168.1.254 isn't your Cisco SG300-28 IP address, it just means that someone has changed it to something else, similar to how you can change the username and password.
For most networks, if your switch's default IP address has been changed, the new IP address can be determined using tracert, a command available from the Command Prompt in Windows.
See How to Identify Network Hardware IP Addresses on a Local Network if you need help using that command to find the SG300-28 default IP.
Resetting the SG300-28 switch will not only restore the username and password but also the default IP address. If you still can't access the switch using its IP address after a full reset, there's probably an issue with its physical connection. Trace the device's cables from the switch outward to see if there are any missing connections or bad wires.
Cisco SG300-28 Manual & Firmware Download Links
The Cisco SG300-28 Support page on Cisco's website is the official location of all things related to the switch, be it downloads, videos, or documentation.
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From this link, you can find the Cisco SG300-28 Downloads page (in the Downloads tab) where you can get the latest firmware and managed switch MIB downloads. All of the firmware files use the .ROS file extension, but depending on the version you choose to download, you might get it in a ZIP archive that you have to open before finding the firmware file.
Switches that are available as different hardware versions will usually use unique firmware, making it vitally important to download the right one for your specific device. The Cisco SG300-28 switch, however, doesn't have any other hardware versions, so the firmware you find through the link above is the same firmware for all SG300-28 switches ever made.
The Cisco SG300-28 Documentation page (through the Documentation tab) holds all the brochures, command references, data sheets, install/upgrade guides, release notes, and other related documents for the device. This Cisco SG300-28 Quick Start Guide is a direct link to the PDF file that can help you set up your switch.
Most if not all of the documents you can download from Cisco regarding the SG300-28 switch, are in the PDF format. You can use a free PDF reader to open them, like Sumatra PDF if you're using Windows.