CBS350 web interface unresponsive

[ambarr]

I have a stack of 3 CBS350-48T-4X switches where the web interface is now unresponsive.  The "processing data" status indicator gets no further than 50%, and I'm unable to get into the configuration screens. Initially I was able to get into the web interface but, for some reason it stopped working.

[Kasun Bandara]

@ambarr can you try different web browser

[ambarr]

I tried 3 different browsers, none worked.

[marce1000]

 - Some hints : 1) Check logs on the device
                        2) Have a reboot
                        3) Use the latest firmware available , 

 M.

[ambarr]

Yes, rebooted and using latest firmware. How do you check firmware using cli?

[ambarr]

Sorry. I meant how do you check logs using cli?

[marce1000]

           >...Sorry. I meant how do you check logs using cli?
           Use the show bootvar or  show version command(s)

 M.

[ambarr]

server-room-stack#show bootvar
Active-image: flash://system/images/image_cbs_ros_3.3.0.16_release_cisco_signed.bin
Version: 3.3.0.16
MD5 Digest: 7decdf94fd5999afb7b07509896c693b
Date: 23-Mar-2023
Time: 11:37:54
Inactive-image: flash://system/images/image1.bin
Version: 3.2.1.1
MD5 Digest: 937212ebf51de43330b6f7967a7445ae
Date: 13-Feb-2023
Time: 01:12:59
server-room-stack#show version
Active-image: flash://system/images/image_cbs_ros_3.3.0.16_release_cisco_signed.bin
Version: 3.3.0.16
MD5 Digest: 7decdf94fd5999afb7b07509896c693b
Date: 23-Mar-2023
Time: 11:37:54
Inactive-image: flash://system/images/image1.bin
Version: 3.2.1.1
MD5 Digest: 937212ebf51de43330b6f7967a7445ae
Date: 13-Feb-2023
Time: 01:12:59

[marce1000]

  >...Active-image: flash://system/images/image_cbs_ros_3.3.0.16_release_cisco_signed.bin
    Firmware is latest , as   a sanity check , you could you  try from another 'workstation' (PC or other) ?

 M.

[ambarr]

I've tried access it from 3 different machines all with different OS's

[marce1000]

        - What is the network topology and involved devices between the PC and the CBS350 ?

 M.

[ambarr]

I've tried both directly attached and with another switch between.

[marce1000]

                                - >I've tried both directly attached and with another switch between.
   Use  another switch in between  , then verify a couple of things : make sure both your own connection and the remote CBS350 have full-duplex (port setting and negotiated) , also check the port speeds anything such as 10Mb or below , is an error. Also check the port counters for both your PC and the CBS350 , make sure that there are no error counters incrementing , 

 M.

[ambarr]

Verified no errors and full duplex on both connecting trunk ports. Still can't get into web config.

[marce1000]

     >...Verified no errors and full duplex on both connecting trunk ports. Still can't get into web config.
 - Don't use trunk ports for the configuration phase , use access mode only , both for your device and the cbs350 , 

 M.