TL-SG108E not managable

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TL-SG108E not managable

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TL-SG108E not managable
TL-SG108E not managable
2019-08-09 12:48:46
Model: TL-SG108E  
Hardware Version: V4
Firmware Version: 20180730

Just buyed the TL-SG108E and installed the 'management' utility. Switch was perfectly found.

I saw on the support pages there was a newer firmware (20181130) and I want to install it.

I have started the upgrade with that downloaded file and about half way 'Some error occured' was the message.

 

After that error the 'Unmanaged Pro configuration utility ' was not be able to find the switch anymore.

 

I want to reset the switch, but how should I do that? (I have seen the reset hole, but 'pinning this' gives no result

 

Thanks for thinking with me

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#1
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7 Reply
Re:TL-SG108E not managable
2019-08-12 08:56:14

@Interspeed 

 

How to hard reset it: With the switch powered on, press this button for five seconds or above to reset the software setting back to factory default setting.

 

Then connect the computer which installed the configuration utility to the switch only and setup static IP for the computer as the instruction below:

https://www.tp-link.com/support/faq/14/ 

 

After that, please verify whether the utility can detect the switch; if not, please ping the gateway of the switch and show us the results.

Note: The gateway is 192.168.0.1 by default.

 

Good day. 

 

 

 

 

2022 TP-Link Wi-Fi 7 Product Launch Event | Watch the Replay at https://www.tp-link.com/us/wifi7/event/.
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#2
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Re:TL-SG108E not managable
2019-12-30 12:42:08 - last edited 2019-12-30 12:49:03

@Kevin_Z 

Hi,

 

I have the very same issue - received my switch today, wanted to upgrade the FW to Version TL-SG108Ev4_en_1.0.0_[20181120-rel40749]_up - the Unmanaged Pro Configuration Tool showed an error and the Tool is not showing anything anymore.

 

During the upgrade the SG108E (V4) was connected to an SG105E (V1). The SG105E is still showing up in the Config Tool. Lights are still on on the SG108E and even Network seems to be up. 

 

The Gateway 192.168.0.1 could be reached (ping is showing results), but this might be influenced by the SG105E.

 

I tried to connect the SG108E directly to my PC and to change my subnet to 192.168.0.x - but then the switch did not show up in the Config tool as well.

 

The Reset Button is doing nothing btw...at least nothing, I can see. I've pressed it for far more than 5 Seconds, turned off power, pushed the button before turning power on again....all does not change the behaviour.

 

What else could be done to revive the Switch?

Or is it directly bricked by the standard update procedure?

 

Cheers

 

MadMath

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#3
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Re:TL-SG108E not managable
2019-12-30 13:02:01

@Kevin_Z 

 

I've tried the direct connection now again - Config Tool does show nothing, Default Gateway of switch is pingeable...

 

What next?

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#4
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Re:TL-SG108E not managable
2020-01-02 01:19:55

@madmath74 

Not sure it matters, but subnet mask should be 255.255.255.0

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#5
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Re:TL-SG108E not managable
2020-01-02 08:12:19
As far as I know, this Subnet mask just says, that my computer is looking into 192.168.*.* If I would set it to 255.255.255.0 it would look into 192.168.0.*
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#6
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Re:TL-SG108E not managable
2020-01-09 08:22:41
Okay....will now send back my device - will not take a TP Link switch again after this (service) experience...
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#7
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Re:TL-SG108E not managable
2020-10-30 21:56:47

@Interspeed 

 

I have in the end been able to achieve a good result on a BRICKED SG108E v1.

 

Before you start, step 2 is probably better on a Linux machine to achive NMAP scan over the sw 192.168.0.1

 

  1. Configure network interface with an IP on the same subnet

IP = 192.168.0.10

NETMASK = 255.255.255.0

GW = 192.168.0.1

( after that, try to ping to switch ip 192.168.0.1 if you reach the host, continue to next step )

 

2. From linux machine, execute this command (install it if you don't have: sudo apt install nmap)

 

3. Once you are done, execute: sudo nmap -Pn -sS -sV 192.168.0.1

 

4. With the results on screen you can see something like this:

############################################################################
PORT   STATE SERVICE VERSION
80/tcp open  http

1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at https://nmap.org/cgi-bin/submit.cgi?new-service :
SF-Port80-TCP:V=7.80%I=7%D=10/30%Time=5F9C8F79%P=x86_64-pc-linux-gnu%r(Get
SF:Request,28C,"HTTP/1\.1\x20200\x20OK\r\nConnection:\x20close\r\nContent-
SF:Type:\x20text/html\r\n\r\n<html\x20style=\"display:none\">\n<head>\n<me
SF:ta\x20HTTP-EQUIV=\"Content-Type\"\x20CONTENT=\"text/html;\x20charset=bi
SF:g5\">\n<title>TP-LINK\x20Web-Smart\x20Switch</title>\n</head>\n<framese
SF:t\x20cols=\"0,\x20250,\*\">\n<frame\x20name=\"hidden_frame\"\x20framebo
SF:rder=\"0\"\x20src=\"hidden\.cgi\"\x20>\n<frame\x20name=\"menu-frame\"\x
SF:20target=\"main-frame\"\x20src=\"menu\.cgi\"\x20>\n<frameset\x20rows=\"
SF:130,\*\"><frame\x20name=\"panel-frame\"\x20scrolling=\"no\"\x20src=\"pa
SF:nel\.cgi\"\x20noresize>\n<frame\x20name=\"main-frame\"\x20src=\"info\.c
SF:gi\"\x20noresize>\n<noframes>\n<body\x20style=\"display:none\">\n<p>Thi
SF:s\x20page\x20uses\x20frames,\x20but\x20the\x20browser\x20does\x20not\x2
SF:0support\x20them\.</p>\n</body>\n</noframes>\n</frameset>\n</html>\n")%
SF:r(FourOhFourRequest,1B5,"HTTP/1\.1\x20200\x20OK\r\nConnection:\x20close
SF:\r\nContent-Type:\x20text/html\r\n\r\n<html>\n\n<head>\n<title>Reset</t
SF:itle>\n<link\x20rel=\"stylesheet\"\x20type=\"text/css\"\x20href=\"/styl
SF:e\.css\">\n</head>\n\n<body>\n<center>\n\n<fieldset>\n<legend>Loader\x2
SF:0Mode</legend>\n\x20\x20<b\x20style=\"font-weight:normal;font-family:\x
SF:20Geneva,\x20Arial,\x20Helvetica,\x20sans-serif;letter-spacing:\.45pt\"
SF:>Firmware\x20upgrade\x20mode\.\x20Please\x20upload\x20your\x20image\x20
SF:by\x20TFTP\x20or\x20HTTP\x20\n\x20\x20<p>\n</fieldset>\n\n</center>\n</
SF:body>\n</html>\n\0");
MAC Address: 30:B5:C2:XX:YY:ZZ (Tp-link Technologies)
############################################################################


5. As you can see, there is some pages on the switch HTTP server. If you try to connect on http://192.168.0.1 you will not see anything BUT

 

6. You can enter on one of those pages like that

http://192.168.0.1/menu.cgi

 

 

 

7. Now you are able to upload the firmware by two methods, TFTP or HTTP (easy way = http)

 

8. When you select HTTP Firmware Upgrade, select "browse file" and choose the correct firmware.

 

9. You are DONE, wait a few minutes and you can loging through Easy Smart Configuration Utility again.

 

NOTE: Is mandatory that SW will be on "Loader Mode" you can check for example trying to access to http://192.168.0.1/login.html and see that

 

 

 

Hope this help to everybody to bring back to live a TP-LINK SG108E (in my case V1)

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