From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 4275 invoked from network); 26 Jun 2022 21:54:48 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 26 Jun 2022 21:54:48 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 4E5F140C71; Mon, 27 Jun 2022 07:54:12 +1000 (AEST) Received: from pasta.tip.net.au (pasta.tip.net.au [203.10.76.2]) by minnie.tuhs.org (Postfix) with ESMTPS id D19C140C70 for ; Mon, 27 Jun 2022 07:54:02 +1000 (AEST) Received: from [192.168.1.2] (219-90-181-104.ip.adam.com.au [219.90.181.104]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by pasta.tip.net.au (Postfix) with ESMTPSA id 4LWPkK5LSCz9Pqn; Mon, 27 Jun 2022 07:53:28 +1000 (AEST) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.21\)) From: Steve Jenkin In-Reply-To: Date: Mon, 27 Jun 2022 07:53:27 +1000 Content-Transfer-Encoding: quoted-printable Message-Id: References: <20220626021956.0140918C0A2@mercury.lcs.mit.edu> <1C6AFC69-F616-421A-B7BA-376ACDC295BA@canb.auug.org.au> To: TUHS X-Mailer: Apple Mail (2.3445.104.21) Message-ID-Hash: SQRY3MP2OXH7NDWFAWQG3UHQYTS7QSES X-Message-ID-Hash: SQRY3MP2OXH7NDWFAWQG3UHQYTS7QSES X-MailFrom: sjenkin@canb.auug.org.au X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Erik Fair X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Research Datakit notes List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Erik, Thanks for the reply & the account of your work.=20 You seemed to do a lot less work than I saw networking teams forced = into. As you say, =E2=80=9Cwork with it=E2=80=9D. I worked at the ANU for a short time.=20 They used a Class-B, with address ranges delegated to (many) local = admin, but Central IT demanded every device connect to their switch, = which allowed them to monitor ports. I think they=E2=80=99d have a hard time renumbering, my section didn=E2=80= =99t even have DHCP. Here=E2=80=99s the reference I spared the list initially. Very thin on details. The only more detailed info is a video. Australia Post's telco transformation named top IT project = Billed as the largest project of its type, the project wrapped = up in November last year after more than two years of work to address = critical network performances challenges and high operating costs. The telecommunication transformation saw the rollout a new = software-defined wide area network (SD-WAN) across 4000 sites. regards steve j > On 27 Jun 2022, at 06:35, Erik Fair wrote: >=20 >>=20 >> On Jun 26, 2022, at 02:46, steve jenkin = wrote: >>=20 >> One of the modern challenges for Enterprise Customers is =E2=80=9Cchang= e network provider=E2=80=9D. >> One major Aussie firm just took two years to move Service Provider = and it was =E2=80=99news=E2=80=99. >>=20 >> 25yrs ago, and probably now as well, interconnecting / splitting = corporate networks following merges / de-merges was a huge task. >> IP networks require re-numbering and basic IP services, like DNS, = email, web, need re-provisioning / re-platforming. >=20 >=20 > I take issue with this, and have experience to backup my view: it is = not hard to change Internet Service Providers (ISP) for large = corporations - I did it several times during my tenure as the = =E2=80=9CInternet guy=E2=80=9D for Apple Computer, Inc., an ~$8bn = revenue multinational corporation. You just have to plan for it = properly, handle transitions gracefully (ideally, with overlap), and = keep control of (do not outsource) key assets like domain names, public = IP network address assignments, and services like e-mail (SMTP). -- Steve Jenkin, IT Systems and Design=20 0412 786 915 (+61 412 786 915) PO Box 38, Kippax ACT 2615, AUSTRALIA mailto:sjenkin@canb.auug.org.au http://members.tip.net.au/~sjenkin