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Forum Discussion

bfowler9024's avatar
bfowler9024
Aspirant
Apr 30, 2016

VLAN traffic forwarding

I have a M4100-26G-POE switch with several vlan trunk ports. Port 1 is the uplink and ports 3,4,5,6 are downlinks, all with same tagged vlans.  The traffic forwarding looks more like a hub than a swi...
Troubleshooting
DaneA's avatar
DaneA
NETGEAR Employee Retired
May 01, 2016

Hi bfowler9024,

 

Kindly answer the questions below:

 

a. How is everything connected?  It would be best to post a screenshot or image of your detailed network setup.

b. What is the current firmware version of your M4100-26G-POE switch?

c. Does same problem occur if you will reboot the M4100-26G-POE switch?

 

 

Regards,

 

DaneA

NETGEAR Community Team

bfowler9024's avatar
bfowler9024
Aspirant
May 05, 2016

Hello Dane,

 

Sorry for the delay. Firmware is10.0.2.13. I have attached a diagram and traffic graphs.  You will see that the traffic coming in from the uplink port 26 is replicated out ports 3,4,5,6 much like a hub rather than a switch.

 

Netgear M4100-26G-POE.jpgScreen Shot 2016-05-05 at 6.10.20 AM.pngScreen Shot 2016-05-05 at 6.10.47 AM.pngScreen Shot 2016-05-05 at 6.11.00 AM.png

  • DaneA's avatar
    DaneA
    NETGEAR Employee Retired
    May 08, 2016

    Hi bfowler9024, 

     

    It seems that you did port mirroring.  So far there are no issues logged using firmware v10.0.2.13 just like what you have described here.  Can you try to downgrade the firmware to v10.0.2.11 then check if same problem will occur.  Make sure to reset the M4100-26G-POE switch back to factory default settings after a successfully downgrading the firmware then reconfigure it from scratch. 

     

    Here is the link where to download v10.0.2.11.  

     

     

    Regards,


    DaneA

    NETGEAR Community Team

    • bfowler9024's avatar
      bfowler9024
      Aspirant
      May 08, 2016

      Port mirroring is not configured:

       

      Screen Shot 2016-05-08 at 8.45.50 AM.png

      • DaneA's avatar
        DaneA
        NETGEAR Employee Retired
        May 08, 2016

        Hi bfowler9024,

         

        Kindly try also to configure port mirroring before and after you have downgraded the firmware.  Select port 26 as a source port on the M4100-26G-POE switch.  Then, select another port(s) as a destination port on the M4100-26G-POE switch where a PC with Wireshark installed in it is directly connected.  It would be best that Wireshark could capture the packets on the event the problem occurs from the source port.
         
        You may download Wireshark on this link.  As reference guide, you may check this link I found online on how to use Wireshark.  Once the problem recurs, download the packet capture to your PC. 

         

        For the captured packets to be analyzed, open an online case with NETGEAR Support and state your concern.  Attach the captured packets from Wireshark as well as the traffic graphs on the online case you have opened for it to be analyzed by the engineering team.

         


        Regards,  
         
        DaneA
        NETGEAR Community Team

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