From owner-freebsd-questions Tue May 29 17: 5:52 2001 Delivered-To: freebsd-questions@freebsd.org Received: from bilver.wjv.com (dhcp-1-146.n01.orldfl01.us.ra.verio.net [157.238.210.146]) by hub.freebsd.org (Postfix) with ESMTP id 07FD037B424; Tue, 29 May 2001 17:05:44 -0700 (PDT) (envelope-from bill@bilver.wjv.com) Received: (from bill@localhost) by bilver.wjv.com (8.11.1/8.11.1) id f4U05K711197; Tue, 29 May 2001 20:05:20 -0400 (EDT) (envelope-from bill) Date: Tue, 29 May 2001 20:05:19 -0400 From: Bill Vermillion To: Laurence Berland Cc: bv@wjv.com, Colin Campbell , Christophe Prevotaux , deepak@ai.net, questions@FreeBSD.ORG, isp@FreeBSD.ORG Subject: Re: OC48 interface Message-ID: <20010529200519.B11016@wjv.com> Reply-To: bv@wjv.com References: <3B12CBBE.567B1A8D@confusion.net> <20010529003126.C3968@wjv.com> <3B1406F2.E4DCBD0F@confusion.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <3B1406F2.E4DCBD0F@confusion.net>; from stuyman@confusion.net on Tue, May 29, 2001 at 03:30:42PM -0500 Organization: W.J.Vermillion / Orlando - Winter Park Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Tue, May 29, 2001 at 03:30:42PM -0500, Laurence Berland thus sprach: > > > > > However in the US [I don't know abou elsewhere] there is no OC-1. > > No OC-9, 18, 34, or 36. > > > > You will see OC-3, OC-12, OC-48 and OC-192. There is doubt > > that the OC-768 will have wide distribution - that about 40Gbs - > > because it's part of the SONET and TDM methods, it's not going to > > to see much acceptance. > > > > Bill > /me, who isn't as familiar with SONET as he'd like to be, doesn't > understand why OC-768 will not be used when it becomes needed. > What am I missing? I'm still learning all this too but from what I've read the opinions are the OC-768 won't happen because SONET is a TDM [Time Division Multiplexing] method and carries a lot of overhead with it. Speeds will be there, but it just won't be SONET. I remember sitting through some tutorials about 2 years ago - and Ciena was calling all the SONET upgrades 'fork lift upgrades' because it doesn't upgrade that well. It makes sense. I know that were I have some machines located [in a Level 3 facility] they say their goal is to drop all SONET and become a pure IP transport. If I'm mis-understanding this, please let me know. Bill -- Bill Vermillion - bv @ wjv . com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message