nanog mailing list archives

Re: DSL and/or Routing Problems


From: jlewis () lewis org
Date: Wed, 31 Mar 2004 00:08:20 -0500 (EST)


On Tue, 30 Mar 2004, Stewart, William C (Bill), RTSLS wrote:

ping did _this_
Ping is not very informative or accurate.
If you run a traceroute, which is also not very accurate,

Get the best of both tools and use mtr (assuming unix-like platform).
There are similar tools for windows (pingplotter?).

This thread reminds me of my own DSL, which rides the ILEC's network and
is handed off to $work at the CO as an ATM PVC.  For years, my DSL service
has osciliated from fine (20-30ms ping times) to not good (200-300ms)  to
unusable (>=1000ms ping times).  It seems to work fine for months, then
get bad to really bad for days or weeks at a time.  I've replaced CPE
several times, and even keep 2 totally different brand/model routers at
the house, just in case (so when I call the DSG, I can say "yes, not only
have I power cycled it, I've replaced the router").  I've spent
considerable time on the phone with the ILEC.  Most calls, they claim
there's nothing wrong.  A few times, they've admitted it's a known problem
with the "lt card", not that that means much to me, and resetting it often
makes things better.

----------------------------------------------------------------------
 Jon Lewis *jlewis () lewis org*|  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________


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