Re: [Teas] [netmod] Typedefs for bandwidth

"Acee Lindem (acee)" <acee@cisco.com> Fri, 14 May 2021 12:27 UTC

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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Italo Busi <Italo.Busi@huawei.com>, "'Juergen Schoenwaelder'" <j.schoenwaelder@jacobs-university.de>, Reshad Rahman <reshad=40yahoo.com@dmarc.ietf.org>
CC: "teas@ietf.org" <teas@ietf.org>, "'netmod@ietf.org'" <netmod@ietf.org>
Thread-Topic: [netmod] Typedefs for bandwidth
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Subject: Re: [Teas] [netmod] Typedefs for bandwidth
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I'd be all for using some unsigned integer quantity. I think it was a mistake for using IEEE floating point in the first place. This floating point nonsense was carried over to Traffic Engineering (TE) from early work done on transport area on RSVP. For example, https://www.rfc-editor.org/rfc/rfc2210.txt and we've been stuck with it ever since... 

Thanks,
Acee

On 5/14/21, 6:08 AM, "netmod on behalf of Italo Busi" <netmod-bounces@ietf.org on behalf of Italo.Busi@huawei.com> wrote:

    Reshad, Juergen,

    Actually, there is some on-going discussion within TEAS because some packet technology-specific YANG modules are not using the bandwidth-ieee-float32 but prefers using some uint type:

    https://github.com/tsaad-dev/te/issues/116

    The ietf-te-packet-types already defines bandwidth-kbps, bandwidth-mbps and bandwidth-gbps but during the discussion of this open issue it was pointed out that it would be desirable to specify both the bandwidth and the units (Kbps/Mbps/Gbps)

    Italo

    > -----Original Message-----
    > From: Juergen Schoenwaelder [mailto:j.schoenwaelder@jacobs-university.de]
    > Sent: giovedì 13 maggio 2021 19:25
    > To: Reshad Rahman <reshad=40yahoo.com@dmarc.ietf.org>
    > Cc: 'netmod@ietf.org' <netmod@ietf.org>
    > Subject: Re: [netmod] Typedefs for bandwidth
    > 
    > On Thu, May 13, 2021 at 11:57:26AM -0400, Reshad Rahman wrote:
    > > Hi,
    > >
    > >
    > >
    > > Has there been any discussions wrt adding new  bandwidth types e.g. the
    > bandwidth-xxx types in draft-ietf-teas-yang-te-types? I see RFC8294 has
    > bandwidth-ieee-float32 but it doesn’t have units (Kbps/Mbps/Gbps).
    > >
    > 
    > The description of bandwidth-ieee-float32 says:
    > 
    >           The units are octets per second.
    > 
    > Note that draft-ietf-teas-yang-te-types has been published as RFC 8776 in June
    > 2020, it should be safe to use these definitions.
    > 
    > /js
    > 
    > --
    > Juergen Schoenwaelder           Jacobs University Bremen gGmbH
    > Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
    > Fax:   +49 421 200 3103         <https://www.jacobs-university.de/>
    > 

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