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Re: [bess] John Scudder's No Objection on draft-ietf-bess-evpn-irb-mcast-11: (with COMMENT)

"Jeffrey (Zhaohui) Zhang" <zzhang@juniper.net> Fri, 08 March 2024 04:14 UTC

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From: "Jeffrey (Zhaohui) Zhang" <zzhang@juniper.net>
To: John Scudder <jgs@juniper.net>
CC: The IESG <iesg@ietf.org>, "draft-ietf-bess-evpn-irb-mcast@ietf.org" <draft-ietf-bess-evpn-irb-mcast@ietf.org>, "bess-chairs@ietf.org" <bess-chairs@ietf.org>, "bess@ietf.org" <bess@ietf.org>, "mankamis@cisco.com" <mankamis@cisco.com>
Thread-Topic: John Scudder's No Objection on draft-ietf-bess-evpn-irb-mcast-11: (with COMMENT)
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Archived-At: <https://mailarchive.ietf.org/arch/msg/bess/yeX8gWkDdw308qk7JbwVzWirkQk>
Subject: Re: [bess] John Scudder's No Objection on draft-ietf-bess-evpn-irb-mcast-11: (with COMMENT)
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Hi John,

The duplication itself is a problem - a receiver should not receive duplicates.

However, a source should not send the same packet to two BDs. That's what the paragraph is supposing:

        ... (This does assume that source S does not
        send the same (S,G) datagram on two different BDs ...)

Thanks.
Jeffrey


Juniper Business Use Only
-----Original Message-----
From: John Scudder <jgs@juniper.net>
Sent: Thursday, March 7, 2024 11:07 AM
To: Jeffrey (Zhaohui) Zhang <zzhang@juniper.net>
Cc: The IESG <iesg@ietf.org>; draft-ietf-bess-evpn-irb-mcast@ietf.org; bess-chairs@ietf.org; bess@ietf.org; mankamis@cisco.com
Subject: Re: John Scudder's No Objection on draft-ietf-bess-evpn-irb-mcast-11: (with COMMENT)

On Mar 7, 2024, at 9:47 AM, Jeffrey (Zhaohui) Zhang <zzhang@juniper.net> wrote:
>
> zzh> If the source host is also connected to another BD3 that is attached to PE2 and it is sending to both BD2 and BD3, then both copies will be switched to PE1 via the SBD

So the only consequence is suboptimality because of duplicated packets? That seems fine. Thanks.

—John

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