nanog mailing list archives
Re: "Is TDM going the way of dial-up?"
From: "Kevin Oberman" <oberman () es net>
Date: Mon, 29 Mar 2010 22:14:29 -0700
Date: Fri, 26 Mar 2010 16:43:23 GMT From: msokolov () ivan Harhan ORG (Michael Sokolov) Rick Ernst <nanog () shreddedmail com> wrote:I've noticed over the last 3 years or so that TDM, specifically T-1, access and transport has been in a steady decline. Customers are moving to FTTH and cable, or going WiMAX and Metro-Ethernet. Ethernet seems to have taken an even bigger bite out of DS-3. The bigger pipes seem to favor ethernet. A recent upgrade from OC-3 to GigE transport actually saved us a large chunk of money. I'm wondering if others are seeing the same behavior, if it's market-dependant, or if I'm just imagining things.Unfortunately what you are seeing is indeed where the world is going, and it is extremely painful to watch. My personal preference is the direct opposite of that: Ethernet for non-LAN use is my very antithesis, I hate it to the core of my being. V.35/HDLC forever for me! I will continue using HDLC over traditional synchronous serial WAN media for as long as I am alive. MS P.S. This message is being sent from a VAX running a variant of 4.3BSD (Quasijarus). Almost the entire ARPA Internet software stack that's running on my VAXen is mostly unchanged from how it was in 1988.
Much as I love Sonet and the like, I will channel Randy and say that I hope all of my competitors do this. (OK. We really don't have competitors.) And, if you are using a 1988 TCP stack on a 4.3 system, you are not likely to ever efficiently utilize a higher speed link and will not behave well on any link. TCP has come a long way in the past 12 years. (Of course, I can't guess what "mostly unchanged" means.) -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman () es net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
Current thread:
- Re: "Is TDM going the way of dial-up?", (continued)
- Re: "Is TDM going the way of dial-up?" Justin M. Streiner (Mar 26)
- Re: "Is TDM going the way of dial-up?" joel jaeggli (Mar 26)
- Re: "Is TDM going the way of dial-up?" Stefan (Mar 29)
- RE: "Is TDM going the way of dial-up?" Dylan Ebner (Mar 26)
- Re: "Is TDM going the way of dial-up?" Steve Meuse (Mar 26)
- RE: "Is TDM going the way of dial-up?" Olsen, Jason (Mar 26)
- Re: "Is TDM going the way of dial-up?" Jared Mauch (Mar 26)
- Re: "Is TDM going the way of dial-up?" Frank A. Coluccio (Mar 26)
- Re: "Is TDM going the way of dial-up?" Frank A. Coluccio (Mar 26)
- Re: "Is TDM going the way of dial-up?" Michael Sokolov (Mar 26)
- Re: "Is TDM going the way of dial-up?" Kevin Oberman (Mar 29)
- Re: "Is TDM going the way of dial-up?" Michael Sokolov (Mar 29)
- Re: "Is TDM going the way of dial-up?" Valdis . Kletnieks (Mar 30)