> Date: Fri, 26 Mar 2010 16:43:23 GMT > From: msoko...@ivan.harhan.org (Michael Sokolov) > > Rick Ernst <na...@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: ober...@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
