Re: [ippm] [**EXTERNAL**] Re: AD review of draft-ietf-ippm-stamp

Rakesh Gandhi <rgandhi.ietf@gmail.com> Mon, 19 August 2019 16:38 UTC

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From: Rakesh Gandhi <rgandhi.ietf@gmail.com>
Date: Mon, 19 Aug 2019 12:38:42 -0400
Message-ID: <CAMZsk6cXcjLoc_sGbcrkgTM=cdcfA-hdLshqFEwH0zpTVQ=BwQ@mail.gmail.com>
To: Mirja Kuehlewind <ietf@kuehlewind.net>
Cc: "Civil, Ruth" <gcivil@ciena.com>, Henrik Nydell <hnydell@accedian.com>, Greg Mirsky <gregimirsky@gmail.com>, "rrahman@cisco.com" <rrahman@cisco.com>, Shahram Davari <shahram.davari@broadcom.com>, "draft-ietf-ippm-stamp@ietf.org" <draft-ietf-ippm-stamp@ietf.org>, IPPM Chairs <ippm-chairs@ietf.org>, IETF IPPM WG <ippm@ietf.org>, "draft-ietf-ippm-twamp-yang@ietf.org" <draft-ietf-ippm-twamp-yang@ietf.org>
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Subject: Re: [ippm] [**EXTERNAL**] Re: AD review of draft-ietf-ippm-stamp
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Hi Mirja,
Thanks for your comments, yes, such appropriate caveat can be added for the
user port range in the TWAMP Yang mode.

Thanks,
Rakesh


On Mon, Aug 19, 2019 at 11:25 AM Mirja Kuehlewind <ietf@kuehlewind.net>
wrote:

> Hi Rakesh,
>
> Just quickly a comment on this bit:
>
> > On 19. Aug 2019, at 17:12, Rakesh Gandhi <rgandhi.ietf@gmail.com> wrote:
> >
> > TWAMP Yang model [draft-ietf-ippm-twamp-yang-13] can also support the
> range to allow user ports. An example caveat is specified in
> [draft-ietf-tram-turnbis-29]
> > as "unless the TURN server application knows, through some means not
> >    specified here, that other applications running on the same host as
> the TURN server application will not be impacted by allocating ports
> outside this range. "
> >
> I don’t think it is the same thing for turn and stamp/twamp.
>
> In turn you aim at actually opening a connection to a remote endpoint and
> need to make sure that that endpoint is talking the same protocol as you
> do. That remote endpoint might actually implement different services on
> different ports.
>
> TWAMP is used for testing, therefore it could make sense to set up a
> testing server that listens on exactly the same port as your application
> would usually do. Yes, when using twamp on such ports, you have to make
> sure that your twamp server does not implement another protocol on that
> port but often these server are decided for testing only and preconfigured
> in a respective way.
>
> Mirja
>
>
>