Bridge Not Passing External STP



  • I have a switch with STP configured at all ports.

    A firewall, 2.0 ALPHA ALPHA version 2009-06-15 then upgraded to 2009-07-26, is connected to one of the switch ports through its WAN port.

    All configurations are at the defaults.
    LAN has the IP Address 172.16.1.2/24
    OPT1 has no IP address and is configured as a bridge with WAN.
    All interfaces have the PASS rule from any IP allowed.

    I login to shell and tcpdump on WAN and I can see STP packets from the switch. When I tcpdump on the OPT1 I cannot see this STP neither any other STP.

    I also enabled "disable all packet filtering" and no avail too.
    What's wrong?



  • Is this off topic? or the wrong section?
    I need your help as I really failed to fix it.
    I have no FreeBSD nor pfSense/m0n0wall experience.
    My experience is 100% Linux.
    Any pointers to the problem will be very helpfull.



  • Hi,

    If this started happening since you updated to 726, then go back to 615, otherwise check to see if your pfbox configured passing the mcast frames correctly as bpdu uses well-known mcast addr for its destination. In your case mcast frames must have been discarded somewhere between WAN and OPT1.

    cheers,


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