[outages] comcast/sprint oddities

Jay Ashworth jra at baylink.com
Wed Mar 13 11:54:13 EDT 2013


----- Original Message -----
> From: "Jeremy Chadwick" <jdc at koitsu.org>

> I would recommend setting up scripts/tools that run mtr from a cronjob
> and save the output to a file, and do this on hosts at both ends of
> the network (the Comcast end, and the Sprint end).

And the recommended approach is:

# mtr -rwc 10 $HOST
# mtr -rwcn 10 $HOST

(Alas, mtr won't show both the name and IP, even in report modes; I will
eventually get sick enough of that to patch it.  Yes, local misconfigs
that cause bad DNS resolution need to be visible in such report output.)

Note that mtr needs to be both setUID root *and* executable by Other
in order to work for others than root, assuming you need that.  Neither
is default.

Cheers,
-- jra
-- 
Jay R. Ashworth                  Baylink                       jra at baylink.com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com         2000 Land Rover DII
St Petersburg FL USA               #natog                      +1 727 647 1274



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