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Re: [bess] Question on split horizon label for EVPN VPWS Multi homing

gangadhara reddy chavva <meetgangadhara@gmail.com> Mon, 20 May 2019 06:01 UTC

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From: gangadhara reddy chavva <meetgangadhara@gmail.com>
Date: Mon, 20 May 2019 11:30:55 +0530
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To: "Rabadan, Jorge (Nokia - US/Mountain View)" <jorge.rabadan@nokia.com>
Cc: "bess@ietf.org" <bess@ietf.org>
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Subject: Re: [bess] Question on split horizon label for EVPN VPWS Multi homing
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HI Jorge,

Thanks for the quick reply.

Regards,
Gangadhar

On Mon, May 13, 2019 at 8:27 PM Rabadan, Jorge (Nokia - US/Mountain View) <
jorge.rabadan@nokia.com> wrote:

> Hi,
>
>
>
> Remember that the same ES can be shared by Eline, ELAN, Etree and other
> EVPN services, in which you still need the ESI label. So I would follow
> RFC7432 for this.
>
> On reception a PE should ignore the ESI label value if only EVPN VPWS
> services are running.
>
>
>
> As a side note, this document is trying to clarify that the ESI label may
> be zero if no ESI-label based split-horizon is used:
>
> https://tools.ietf.org/html/draft-nr-bess-evpn-mh-split-horizon-00
>
>
>
> Thx
>
> Jorge
>
>
>
> *From: *BESS <bess-bounces@ietf.org> on behalf of gangadhara reddy chavva
> <meetgangadhara@gmail.com>
> *Date: *Monday, May 13, 2019 at 12:39 PM
> *To: *"bess@ietf.org" <bess@ietf.org>
> *Subject: *Re: [bess] Question on split horizon label for EVPN VPWS Multi
> homing
>
>
>
> Hi,
>
>
>
> section 3.1 of EVPN VPWS rfc 8214 specify's the usage of EAD per ES route
> and ESI label extended community for EVPN VPWS. it is not very clear on
> what should sender fill in the ESI label field for EVPN VPWS multi homing.
> as there is no concept of flooding and split horizon procedures are not
> applicable for VPWS.. please clarify on this.
>
>
>
> Regards,
>
> Gangadhar
>
>

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