netdev - Re: [PATCH] iproute2: show network device dependency tree

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Message-ID: <20170226144610.GB2071@nanopsycho.orion>
Date:   Sun, 26 Feb 2017 15:46:10 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Zaboj Campula <zaboj.campula@...t.cz>
Cc:     netdev@...r.kernel.org, jbenc@...hat.com
Subject: Re: [PATCH] iproute2: show network device dependency tree

Sun, Feb 26, 2017 at 03:00:14PM CET, zaboj.campula@...t.cz wrote:
>On Sun, 2017-02-26 at 08:56 +0100, Jiri Pirko wrote:
>> Sat, Feb 25, 2017 at 09:22:22PM CET, zaboj.campula@...t.cz wrote:
>> > On Sat, 2017-02-25 at 18:39 +0100, Jiri Pirko wrote:
>> > > > Sat, Feb 25, 2017 at 05:59:00PM CET, zaboj.campula@...t.cz
>> > > > wrote:
>> > > > Add the argument '-tree' to ip-link to show network devices
>> > > > dependency tree.
>> > > > 
>> > > > Example:
>> > > > 
>> > > > $ ip -tree link
>> > > > eth0
>> > > >    bond0
>> > > > eth1
>> > > >    bond0
>> > > > eth2
>> > > >    bond1
>> > > > eth3
>> > > >    bond1
>> > > 
>> > > 
>> > > Hmm, what is this good for? I'm probably missing something...
>> > 
>> > I consider this kind of output useful when troubleshooting a complex
>> > configuration with many interfaces. It may show relations among
>> > interfaces.
>> 
>> Did you see https://github.com/jbenc/plotnetcfg ?
>> 
>
>Thanks for the link. I haven't seen plotnetcfg and I like it.
>It is handy when the analyzed system has GUI.

You can also run it remotelly. Also I believe that you can catch the
state into some dump file and process it later on. Not 100% sure though.
Ccing Jiri Benc who is the original author of plotnetcfg.