Multicast stats and bridging

From: Alex Hoff (ahoff_at_sandvine.com)
Date: 11/19/03

  • Next message: John Polstra: "RE: netgraph(3) NGM_KSOCKET_BIND" 
    To: "'freebsd-net@freebsd.org'" <freebsd-net@freebsd.org>
Date: Wed, 19 Nov 2003 16:03:12 -0500

    So I was doing some counter and general ifMib testing and I set up a bridge
    with two PCs on either side sending data through the two bridged interfaces.
    It was working fine until I noticed that the bridge will only count incoming
    broadcast and multicast pkts. ie they come in if1 and are counted correctly
    in the stack and bridge stats, but then as they leave, they are no longer
    counted in the stack as nonunicast packets, but as unicast. They appear as
    unicast in both the stack and the bridge stats. (the packets that are sent
    are still multicast, its just the stats that appear wrong)

    What is the desired behavior of a multicast(and broadcast) pkt traveling
    through a bridge? Change it to count it going in *and* out? Or is there some
    reason, that I dont know about, for the current stat counting heuristics?

    Thanks,

    Alex Hoff

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  • Next message: John Polstra: "RE: netgraph(3) NGM_KSOCKET_BIND"

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