[c-nsp] ip device tracking on IOS-XE

[Sebastian Beutel]

Hi Antoine,

On Wed, Aug 10, 2016 at 09:45:40AM +0200, Antoine Monnier wrote:
>
> "nmsp attachment suppress" came from googling, we implemented it and
> verified it stopped device tracking for us.
>
Did you noticed any side effects? Do you use a Cisco Mobility Services
Engine (MSE) or have planes to use it?

>
> which hardware are you working with?
>
Until now we noticed the problem on 3850 and 4k5 (Sup 8-E).

Best,
   Sebastian.
 
> On Tue, Aug 9, 2016 at 6:50 PM, Sebastian Beutel <
> sebastian.beutel at rus.uni-stuttgart.de> wrote:
> 
> > Hi Antoine,
> >
> > On Tue, Aug 09, 2016 at 09:24:55AM +0200, Antoine Monnier wrote:
> > > try this under every interface:
> > >  nmsp attachment suppress
> > > (yeah I know... does not seem related in anyway to IP device tracking but
> > > it does turn it off for us)
> > >
> > Even after reading the sparse documentation i can't figure out what this
> > does. May i aks where did you get the suggestion to this?
> >
> > >
> > > or better, upgrade do a more recent release? it seems 3.6.2aE has it
> > > disabled by default (Cat 3850)
> > >
> > On the particular switch i had 03.07.03E running. Because 03.06.05E is
> > currently the suggested release i rolled back to this version and what
> > happend? A "no ip device tracking" i global config mode seems to succeed
> > but actually does nothing at all: A "sho ip device tracking" makes clear,
> > that it's still running.
> >
> > Best,
> >    Sebastian.
> >
> > > On Mon, Aug 8, 2016 at 7:28 PM, Sebastian Beutel <
> > > sebastian.beutel at rus.uni-stuttgart.de> wrote:
> > >
> > > > Dear list,
> > > >
> > > >     we ran into trouble with the ip device tracking feature that seems
> > to
> > > > be
> > > > enabled by default on devices running ios-xe. There's allready a
> > trouble
> > > > shooting guide:
> > > >
> > > > http://www.cisco.com/c/en/us/support/docs/ios-nx-os-
> > software/8021x/116529-
> > > > problemsolution-product-00.html
> > > >
> > > > As ip device tracking is disabled by default on most of our devices
> > anyway
> > > > (those running ios) my first idea was to just disable it globaly. But
> > even
> > > > though command line completion and online help knows about "no ip
> > device
> > > > tracking <cr>" and a global line "ip device tracking" shows up in sho
> > run
> > > > all, i get an error message saying: "IP device tracking is disabled at
> > the
> > > > interface level by removing the relevant configs".
> > > >
> > > > Next thing is, that no "relevant config" appears in "sho run all" on an
> > > > interface level. There are only globaly lines. And if i try to do a
> > > > "no ip device tracking" on a single interface i get the exact same
> > error
> > > >  message.
> > > >
> > > > But it get's wilder: If i use one of the suggestions of the above link
> > and
> > > > type a "ip device tracking probe delay 10" on just a single interface,
> > the
> > > > command goes through without an error. The result is, that again no
> > > > corresponding configuration shows up on the interface but the global
> > line
> > > > is
> > > > now changed and a "show ip device tracking all" reveals:
> > > >
> > > > Global IP Device Tracking Probe Delay Interval = 10
> > > >
> > > > Any ideas how that makes sense? How to disable device tracking
> > globaly? For
> > > > what use device tracking could be beneficial anyway?
> > > >
> > > > Best,
> > > >    Sebastian.
> > > > _______________________________________________
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> > > > archive at http://puck.nether.net/pipermail/cisco-nsp/
> > > >
> >
> > --
> > Dipl.-Ing. Sebastian Beutel                              tel:
> > +49-711-685-64538
> > Rechenzentrum Universitaet Stuttgart        http://www.rus.uni-stuttgart.
> > de/nks
> > Netze und Kommunikationssysteme              Allmandring 30A, D-70550
> > Stuttgart
> >

-- 
Dipl.-Ing. Sebastian Beutel                              tel: +49-711-685-64538
Rechenzentrum Universitaet Stuttgart        http://www.rus.uni-stuttgart.de/nks
Netze und Kommunikationssysteme              Allmandring 30A, D-70550 Stuttgart