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Re: [pim] pim wg adoption call for draft-chen-pim-srv6-p2mp-path-01

"Jeffrey (Zhaohui) Zhang" <zzhang@juniper.net> Fri, 22 January 2021 13:54 UTC

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From: "Jeffrey (Zhaohui) Zhang" <zzhang@juniper.net>
To: wangyali <wangyali11@huawei.com>, Stig Venaas <stig@venaas.com>, "pim@ietf.org" <pim@ietf.org>
Thread-Topic: [pim] pim wg adoption call for draft-chen-pim-srv6-p2mp-path-01
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Date: Fri, 22 Jan 2021 13:53:58 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/pim/lxQNg9V944jeVEkdf25-fHdQRI4>
Subject: Re: [pim] pim wg adoption call for draft-chen-pim-srv6-p2mp-path-01
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I don't see a consensus on this yet on the mailing list.

It would help if a specific illustration of SRv6 header with SRHs to encode the following tree of 4 leaves and 3 replication points (from the draft itself):

                      [L1]                  R Ingress/Root
                      /                    Li Egress/Leaf
                     /                     Pi Transit Node
                    /
                  [P2]------[L2]
                  /
                 /
                /
     [R]------[P1]                [L3]
                \                /
                 \              /
                  \            /
                  [P3]------[P4]------[L4]

            Figure 1: SR P2MP Path from R to L1, L2, L3 and L4

In other words, translate <P1-m, P2-m, P3-m, L1-m, L2-m, P4-m, L3-m, L4-m> into a real IPv6 header with multiple IPv6 addresses in the SRH (using the 40-bit uSID that Huaimo mentioned), and calculate the header size.

Jeffrey

-----Original Message-----
From: pim <pim-bounces@ietf.org> On Behalf Of wangyali
Sent: Friday, January 22, 2021 5:05 AM
To: Stig Venaas <stig@venaas.com>; pim@ietf.org
Subject: Re: [pim] pim wg adoption call for draft-chen-pim-srv6-p2mp-path-01

[External Email. Be cautious of content]


Hi all,

Explicit Multicast path with SRv6 is an interesting topic. The tradeoff of packet overhead has been clearly discussed in the ML. Support WG adoption.

Best regards,
Yali

-----Original Message-----
From: pim [mailto:pim-bounces@ietf.org] On Behalf Of Stig Venaas
Sent: Tuesday, January 12, 2021 3:54 AM
To: pim@ietf.org
Subject: [pim] pim wg adoption call for draft-chen-pim-srv6-p2mp-path-01

Hi all

We discussed the draft draft-chen-pim-srv6-p2mp-path-01 in the last wg meeting. We did do an adoption call in the meeting, but we also would like to get input on the mailing list.

Please respond by January 25th whether you believe this document should be adopted.
The document can be found at
https://urldefense.com/v3/__https://tools.ietf.org/html/draft-chen-pim-srv6-p2mp-path-01__;!!NEt6yMaO-gk!VSgYDCLf6UPdJ2QkgsJqOBJFepRrAUZ6R6YbriTZxkjO1TtMMrciWjnBDZhPwVL3$

Regards,
Stig

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