[NTLUG:Discuss] Broadcast Storms

[Gregory L. Camp]

We have a RedHat 6.0 box that has multiple interfaces defined on eth0.  We
are using it to route packets between various subnets.  That part is working
well.

It also appears that each interface is configured with BROADCAST on.  And we
seem to be receiving broadcast storms at various times during the day that
are affecting operations.

Here's my questions:
When BROADCAST is on for an interface, does that mean it will forward all
broadcast packets to each of the subnets?
    If so, does anyone know how to disable that?
    Could you use ipchains to stop the forwarding if you cannot disable that
functionality?

If BROADCAST does *not* mean it will forward bcast packets, does anyone have
any other ideas of how to track down what might be causing this?

(Two comments:  This started shortly after adding the multiple interfaces on
this machine, so we believe it is the cause.  And secondly, I have tried
ifconfig with a -broadcast parameter with no effect.  The BROADCAST flag
still shows up when you look at ifconfig.)

Gregory L. Camp
Gregory.Camp at osc.com

--
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