Re: [spring] SRv6 compression

Robert Raszuk <robert@raszuk.net> Tue, 03 August 2021 15:27 UTC

Return-Path: <robert@raszuk.net>
X-Original-To: spring@ietfa.amsl.com
Delivered-To: spring@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 56B053A2751 for <spring@ietfa.amsl.com>; Tue, 3 Aug 2021 08:27:38 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.098
X-Spam-Level:
X-Spam-Status: No, score=-2.098 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=unavailable autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=raszuk.net
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wwqh_litpLHX for <spring@ietfa.amsl.com>; Tue, 3 Aug 2021 08:27:33 -0700 (PDT)
Received: from mail-lj1-x22d.google.com (mail-lj1-x22d.google.com [IPv6:2a00:1450:4864:20::22d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 857D93A2747 for <spring@ietf.org>; Tue, 3 Aug 2021 08:27:33 -0700 (PDT)
Received: by mail-lj1-x22d.google.com with SMTP id l4so28639331ljq.4 for <spring@ietf.org>; Tue, 03 Aug 2021 08:27:33 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=raszuk.net; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=VkGgNQvSpBUHOGDyEtVC9jthMNpxFMQPJFkKd4GDIGc=; b=QQqKnI2cWGCQIEHX3Nbo8RyqaaSGtn1cuSmCKIkobL8q4DYtjkL3ZXPVgtwRVW4MtL fRtB+frLJ3iosjQWIS5+NmCRGo/4glQ1F7to6iDFqLsuGQIqcDflQSGkhFB0hstnmL+1 R3icYVxwwS0kII2LmiWGbvKOJEaPEhbZ+OU+LF9q3lZNETcVFKSrp32XPQ8RK20O+ucX krA7YKyC6HiGw8S11XxSKpwyODgt0z3jDRwN926NQSL2CIAaUHKWjsFGHFsPhcPsbali q8sjhpRVC9YMcN7CGNWxbB2kpRhQWHu8yCihtJ+djsSlC8nfLFUVV0x4vQFi24dVwAlQ Rk6Q==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=VkGgNQvSpBUHOGDyEtVC9jthMNpxFMQPJFkKd4GDIGc=; b=oQRJZdQzfUbqcs8I8SPEavb9zZS12uxc7YI3D+G+FfnhV0yIwiYFupQ6urZ+JHHbvd coBmLaJXEUCVQYcsCoNqXJ4TX8Sb6FzGiJ/1TN3UuEDYrwZ7llAfWqtLzHz6T6wPShR2 ugQpxkl/1Sq3bfgixRmJ5RxUx9j08VcZ0Uf/XmClWEuCCfd218Ddws6FLtcbFz6hXmWm TWTaHJAXo5ZzF0HZLGyXDY/GUFAfvAe/AFesKFJ+5eBOXKUb+YEAAUuKrcp7K05ZLpki z7Pz1TodmolNLp/HWhZJdKCQLJopIMaPfmoIDqGbLo8SwwCzur5i9fQgH2NuVBYv5QN/ kSaQ==
X-Gm-Message-State: AOAM531tXRWhbmnNzWh8Td2akoMQSvTA3jjYt5ZKsqHIahHZHmFs+XEJ cMyTnDbVcWLf3ScAOC4wkqro/6AtHn7UWdLTjkyLqg==
X-Google-Smtp-Source: ABdhPJwPbR7uBLtHrBve/yVMSs8b3ko0ict4PcyVYaWdmlg4BrAXpf65YlxWdnHjpVsoQd34O6gQdxyG4LFiejeE6QY=
X-Received: by 2002:a2e:9e4a:: with SMTP id g10mr15685133ljk.54.1628004443541; Tue, 03 Aug 2021 08:27:23 -0700 (PDT)
MIME-Version: 1.0
References: <c76db204c51d4f4fbe1597d24de469d1@h3c.com> <AS8PR03MB76229F54D7E2ED4C42F0285AEEF09@AS8PR03MB7622.eurprd03.prod.outlook.com> <985ca908c1de4e809b2cd0a11cbdea58@huawei.com> <43B0D1B9-D9EE-43B4-81B1-2D9A8E4313CC@tony.li>
In-Reply-To: <43B0D1B9-D9EE-43B4-81B1-2D9A8E4313CC@tony.li>
From: Robert Raszuk <robert@raszuk.net>
Date: Tue, 3 Aug 2021 17:27:12 +0200
Message-ID: <CAOj+MMELN0sNuF=f_MU+Z+fGcgEhTTBj6cKJfaAis6RORF3QnA@mail.gmail.com>
To: Tony Li <tony.li@tony.li>
Cc: Vasilenko Eduard <vasilenko.eduard@huawei.com>, "spring@ietf.org" <spring@ietf.org>, "li_zhenqiang@hotmail.com" <li_zhenqiang@hotmail.com>, Andrew Alston <Andrew.Alston=40liquidtelecom.com@dmarc.ietf.org>
Content-Type: multipart/alternative; boundary="0000000000008cf82b05c8a95217"
Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/kagneUvq9jPUzs8hCslZMKQ27BI>
Subject: Re: [spring] SRv6 compression
X-BeenThere: spring@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Source Packet Routing in NetworkinG \(SPRING\)" <spring.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/spring>, <mailto:spring-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/spring/>
List-Post: <mailto:spring@ietf.org>
List-Help: <mailto:spring-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/spring>, <mailto:spring-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 03 Aug 2021 15:27:38 -0000

Hi Tony,

I beg to differ on the "forever" part. Which forwarding technology well
maybe other then IPv6 is lasting forever. Take ATM, take FR, take even
MPLS.

It seems that whatever is most widely deployed and supported today is good
choice for squeezing just a bit more SRv6 header. CSID seems the be a clear
winner which market and big vendors decided to adopt.

I am questioning the "forever" part specifically based on control plane
proposal I published to accomplish many similar objectives with no SRH at
all - ultimate SRH compression :) Can't beat that.

Cheers,
Robert.


On Tue, Aug 3, 2021 at 4:55 PM Tony Li <tony.li@tony.li> wrote:

>
> Hi all,
>
> I have a bit of a different perspective.
>
> Whatever solution is selected, it will be basically forever. Vendors will
> cut this into silicon. Quite literally set in stone. It will get deployed
> and there will be no turning back.
> We should pick the best possible solution because we will have to live
> with it. Forever. That far surpasses the pain of having to replace whatever
> folks have deployed so far.
>
> Thus, while I wish no one undue pain, the fact is that current deployment,
> popularity, and market share aren’t compelling reasons to make a selection.
> We need the technically optimal solution.
>
> Please choose carefully. Please choose wisely. Please choose for the very
> long haul.
>
> Tony
>
>
> _______________________________________________
> spring mailing list
> spring@ietf.org
> https://www.ietf.org/mailman/listinfo/spring
>