nanog mailing list archives
Re: Are people still building SONET networks from scratch?
From: Jimmy Hess <mysidia () gmail com>
Date: Sun, 9 Sep 2012 01:15:35 -0500
On 9/8/12, Måns Nilsson <mansaxel () besserwisser org> wrote:
Subject: Re: Are people still building SONET networks from scratch? Date: Just the fact that BFD had to be reinvented shows that there is ample reason to prefer the steady-train-of-frames-with-status of SONET/SDH over perhaps-nobody-sent-a-packet-or-the-line-is-dead quagmire of Ethernet --
Not all Ethernet switching implementations are necessarily equal; there are 802.3ah OA&M and 802.1ag connectivity fault management / Loopback (MAC ping) / Continuity Check Protocol / Link Trace. (Which aren't much use without management software, however.) There /are/ reasons to prefer SONET for certain networks or applications; so it might (or might not) be a reasonable requirement, it just depends. Price is not one of those reasons; all the added complexity and use of less common equipment has some major costs, not to mention risks, involved if mixing many different service providers' products. SONET comes at a massive price premium per port and switching table entry on hardware modules that are much more expensive than 10g switches, and providers often charge a big premium regardless... Therefore; it is not the least bit surprising that a 10g wave would be massively less expensive in many cases than an OC3 over a long distance between point A and point B. As I see it... if you are thinking of 1000 miles of dark fiber to nowhere to support an OC3, then forget the "wasted" capacity; the cost of all that dark fiber needed just for them should get added to the customer's price quote for the OC3. Same deal if instead you need an OC48 at various hops to actually carry that OC3 and be able to end-to-end and tunnel the DCC bytes over IP or restrict equipment choices so you can achieve that D1-12 byte transparency.... -- -JH
Current thread:
- Re: Are people still building SONET networks from scratch?, (continued)
- Re: Are people still building SONET networks from scratch? james jones (Sep 06)
- Re: Are people still building SONET networks from scratch? Nick Hilliard (Sep 06)
- Re: Are people still building SONET networks from scratch? Christopher Morrow (Sep 06)
- Re: Are people still building SONET networks from scratch? Will Orton (Sep 06)
- Re: Are people still building SONET networks from scratch? Christopher Morrow (Sep 06)
- RE: Are people still building SONET networks from scratch? Adam Vitkovsky (Sep 07)
- Re: Are people still building SONET networks from scratch? Robert E. Seastrom (Sep 09)
- Re: Are people still building SONET networks from scratch? Dan Shechter (Sep 09)
- Re: Are people still building SONET networks from scratch? Julien Goodwin (Sep 07)
- Re: Are people still building SONET networks from scratch? Måns Nilsson (Sep 08)
- Re: Are people still building SONET networks from scratch? Jimmy Hess (Sep 08)
- Re: Are people still building SONET networks from scratch? Måns Nilsson (Sep 08)
- Re: Are people still building SONET networks from scratch? Mikael Abrahamsson (Sep 09)
- Re: Are people still building SONET networks from scratch? Måns Nilsson (Sep 08)
- Re: Are people still building SONET networks from scratch? Matthew Petach (Sep 10)
- Re: Are people still building SONET networks from scratch? Jared Mauch (Sep 10)
- Re: Are people still building SONET networks from scratch? Nick Hilliard (Sep 10)
- Re: Are people still building SONET networks from scratch? Matthew Petach (Sep 10)