From: Stefan Hajnoczi <stefanha@gmail.com>
To: GaoYi <gaoyi709@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] VM Communications inner a network bridge
Date: Wed, 5 Sep 2012 08:06:53 +0100 [thread overview]
Message-ID: <CAJSP0QU7MSLSMLi47mzmsDr8h0oifF9bWpyQ-Uiu+ruYFb4Vvg@mail.gmail.com> (raw)
In-Reply-To: <CABurPecEmenidT9TkBYiwHNFurRDeJD=8DrZc4mz7Tqu-6AR8g@mail.gmail.com>
On Tue, Sep 4, 2012 at 1:50 PM, GaoYi <gaoyi709@gmail.com> wrote:
> When 2 VMs are started on the same network bridge, will the TCP/IP
> packets between them still go through the router (actually these 2 VMs share
> the same physical network card)? If so, is it possible to just pass the
> packets inner the network card?
If you have 2 VMs using tap network interfaces on a Linux software
bridge, then packets will be passed between the tap interfaces.
Packets will not go onto the host's physical interface (e.g. eth0).
This is regular Ethernet bridge behavior: the bridge decides on which
port(s) to forward the packet based on its MAC address to port
mapping.
Stefan
prev parent reply other threads:[~2012-09-05 7:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-04 12:50 [Qemu-devel] VM Communications inner a network bridge GaoYi
2012-09-05 7:06 ` Stefan Hajnoczi [this message]
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