[121643] in North American Network Operators' Group
Re: Using /31 for router links
daemon@ATHENA.MIT.EDU (Michael Sokolov)
Sat Jan 23 15:51:34 2010
Date: Sat, 23 Jan 2010 20:50:56 GMT
From: msokolov@ivan.Harhan.ORG (Michael Sokolov)
To: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Brielle Bruns <bruns@2mbit.com> wrote:
> Back in the days of Rhythms and Copper Mountain gear, Netopia had the D
> series routers which were actually xDSL to DSU units.
Yes, I am very familiar with them:
http://ifctfvax.Harhan.ORG/OpenSDSL/existing_cpe/netopia/dsu.html
As that page explains, they are only pseudo-DSUs though. I much much
prefer a true bit-transparent DSU:
http://ifctfvax.Harhan.ORG/OpenSDSL/existing_cpe/xsb2000.html
I have also designed and built an SDSL to EIA-530 DSU of my very own:
http://ifctfvax.Harhan.ORG/OpenSDSL/OSDCU/
On the latter I have the hardware (the page above has a photo of the
board), but the operational software (or firmware if you will) remains
to be finished.
> Though, I'm not sure they'd work these days,
Only in the very limited geographic footpring of what used to be DSL.net
- they are the last remaining semi-major operator of CM DSLAMs:
http://ifctfvax.Harhan.ORG/OpenSDSL/megapath.html
My big goal is to make my own DSU which I have just mentioned function
as a Layer 2 converter (FRF.8 and friends) from Nokia SDSL/ATM served by
Covad to HDLC.
> nor do I think
> they came in ADSL models either.
I don't think anyone have *ever* used V.35 & friends with ADSL -
probably because those who would want V.35 (i.e., people like me) would
find ADSL morally offensive. :-)
MS
