nanog mailing list archives

Re: AS7018 upstream loss via 32.130.88.22 (SF Bay Area) — per-flow, unidirectional


From: Christopher Morrow via NANOG <nanog () lists nanog org>
Date: Tue, 25 Aug 2026 14:32:39 -0400

On Tue, Aug 25, 2026 at 1:13 PM BEASLEY, JOSH via NANOG
<nanog () lists nanog org> wrote:

Hop 9 is the last hop on AS7018. The hop you were concerned with is no longer in the path and it would have been one 
of the first few hops in your trace if it was there.

Josh

From: Al via NANOG <nanog () lists nanog org>
Sent: Tuesday, August 25, 2026 11:00 AM
To: mikecika--- via NANOG <nanog () lists nanog org>
Cc: Al <awnanog () sunnyside com>
Subject: Re: AS7018 upstream loss via 32.130.88.22 (SF Bay Area) — per-flow, unidirectional

Maybe Josh fixed it, but I'm not seeing packet loss here. Odd that traceroutes stop at the 32. 130. . . Because of 
that I cannot see if I am transiting 32. 130. 88. 22 → 32. 130. 20. 157 or not. al@ post: /z/dns$ traceroute ibm. com 
traceroute to ibm. com


Maybe Josh fixed it, but I'm not seeing packet loss here.

Odd that traceroutes stop at the 32.130...

Because of that I cannot see if I am transiting 32.130.88.22 →

32.130.20.157 or not.

I'd guess that (since traceroutes to this space from outside 7018 seem
to just die a the 7018 border) this is CGNat space for ATT Fiber
customers...
I suspect  this all has to be fixed inside the 7018 cloud, and there's
not much 'nanog' peoples can generally do for this problem, eh? :)
(so calling the att support folks, booting your win98 computer and
rebooting it with them on the phone - pstn -  THEN getting them perf /
traceroute data is required)
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