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Forum Discussion

nasss's avatar
nasss
Aspirant
Mar 31, 2021

Vendor specific packet drop

System Description............................. M4100-26G-POE ProSafe 24-port Gigabit L2+ Intelligent Edge PoE Managed Switch, 10.0.2.30, B1.0.1.1 Machine Model.................................. M41...
nasss's avatar
nasss
Aspirant
Apr 01, 2021

Hi schumaku ,

Those messages are used by ATPD for HGW and Wifi bridge discovery.

Wireshark recognize the destination address  as Dst: Spanning-tree-(for-bridges)_ef:03:fe. However it marks protocol type as Unknown (0xfe68) and not an STP

 

Topology:

 

WiFi Bridge <----->Switch<-----> HGW

schumaku's avatar
schumaku
Guru - Experienced User
Apr 01, 2021

If you don't need STP, you could try to disable it, and enable the "Forward BPDU while STP disabled", this exists AFAIK on the M4100 series, too.

 

I would expect they handle/filter the STP protocol based on src and dst address, not on the protocol number. 

  • nasss's avatar
    nasss
    Aspirant
    Apr 01, 2021

    schumaku 

     

    Tried this solution before not working.  It seems that the switch does not consider the packet as BPDU.

    • schumaku's avatar
      schumaku
      Guru - Experienced User
      Apr 01, 2021

      Connect this strange / undefined wireless bridge direct to this gateway....

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