From: "Boris Dorès" <babal@via.ecp.fr>
To: Raffaele Carla <raffaele.carla@gmail.com>
Cc: bridge@lists.osdl.org
Subject: Re: [Bridge] Trouble with ARP traffic
Date: Thu, 31 Aug 2006 19:31:56 +0200 [thread overview]
Message-ID: <20060831173156.GC2801@via.ecp.fr> (raw)
In-Reply-To: <131411580608310945p1dd9bbe4jcb7468adc43196dc@mail.gmail.com>
On Thu, Aug 31, 2006 at 12:45:44PM (GMT-0400), Raffaele Carla wrote:
> As a bridge, the Linux box should be aware where every machine is located
> and separate logically the two segments, shouldn't it?
No. Arp is there to find out where an *IP* address is located. The
bridge doesn't even know what IP is, and therefore transmits arp
exactly like other frames.
> Also, the command "arp –a" shows only one address, wether the "brctl
> showmacs br0" shows all the addresses correctly. Is this a normal
> behaviour?
Yes. "arp -a" lists the addresses that the *host* knows. The bridge
has its own independant database. Not all the frames that pass through
the bridge are transmitted to upper layers, only the ones with the mac
address of the host (and broadcast) are.
--
Boris Dorès
next prev parent reply other threads:[~2006-08-31 17:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-31 16:45 [Bridge] Trouble with ARP traffic Raffaele Carla
2006-08-31 17:03 ` Stephen Hemminger
2006-08-31 17:31 ` Boris Dorès [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-09-01 8:17 Skept
2006-08-30 15:08 Raffaele Carla
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