[ovs-dev] [PATCH] FAQ: mention about plotnetcfg tool

Flavio Leitner fbl at sysclose.org
Thu Sep 3 16:51:53 UTC 2015


On Thu, Sep 03, 2015 at 09:26:17AM -0700, ALeX Wang wrote:
> tried this out, looks useful,

Yeah, try on a openstack compute node with some tenants.
It uses namespaces, veth pairs, ovs bridges, internal ports, tunnels,
linux bridges, etc.  Of course, it's possible to trace the path of a
packet, but it's time consuming and the names aren't exactly human
friendly :)

The tool helps a lot with those sophisticated scenarios.

fbl


> 
> Look good to me,
> 
> Thanks,
> Alex Wang,
> 
> On 3 September 2015 at 07:53, Flavio Leitner <fbl at sysclose.org> wrote:
> 
> > The plotnetcfg is an open source tool to visualy represent
> > relationship between network interfaces on a single host.
> >
> > It helps to understand the path of a packet on a host.
> >
> > Signed-off-by: Flavio Leitner <fbl at sysclose.org>
> > ---
> >  FAQ.md | 3 +++
> >  1 file changed, 3 insertions(+)
> >
> > diff --git a/FAQ.md b/FAQ.md
> > index 5ce42b9..631f6a4 100644
> > --- a/FAQ.md
> > +++ b/FAQ.md
> > @@ -1623,6 +1623,9 @@ A: To debug network behavior problems, trace the
> > path of a packet,
> >     that's correct, then trace the path of the response packet back to
> >     the origin.
> >
> > +   The open source tool called "plotnetcfg" can help to understand the
> > +   relationship between the networking devices on a single host.
> > +
> >     Usually a simple ICMP echo request and reply ("ping") packet is
> >     good enough.  Start by initiating an ongoing "ping" from the origin
> >     host to a remote host.  If you are tracking down a connectivity
> > --
> > 2.1.0
> >
> >
> > _______________________________________________
> > dev mailing list
> > dev at openvswitch.org
> > http://openvswitch.org/mailman/listinfo/dev
> >
> 
> 
> 
> -- 
> Alex Wang,
> Open vSwitch developer
> _______________________________________________
> dev mailing list
> dev at openvswitch.org
> http://openvswitch.org/mailman/listinfo/dev




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