Subject: Re: snapshot
To: Space Case <wormey@eskimo.com>
From: Henry B. Hotz <hotz@jpl.nasa.gov>
List: port-mac68k
Date: 02/25/1998 11:34:34
At 5:01 PM -0800 2/24/98, Space Case wrote:
> 7  sl-gw8-stk-0-0.sprintlink.net (144.228.40.14)  65.480 ms  57.647 ms
>68.540 ms
> 8  * sl-gw8-stk-0-0.sprintlink.net (144.228.40.14)  70.097 ms *
> 9  sl-eskimo-2-0-T1.sprintlink.net (144.228.144.186)  122.088 ms  93.836
>ms  104.519 ms
>
>
>Sometimes I get even more *'s than that...  Notice that 7 and 8 are answered
>by the same machine; not all the traces do that.
>
>Here's another:
>
> 7  sl-bb11-stk-4-2-155M.sprintlink.net (144.232.4.69)  65.396 ms  37.435
>ms  46.212 ms
> 8  * sl-bb7-stk-4-0-0.sprintlink.net (144.232.4.26)  72.449 ms  56.411 ms
> 9  sl-bb6-dc-1-1-0-T3.sprintlink.net (144.228.10.1)  156.824 ms  233.618
>ms  152.578 ms
>10  * sl-gw1-dc-0-0.sprintlink.net (144.228.20.3)  124.097 ms  163.114 ms
>11  * sl-vwan-1-0-T3.sprintlink.net (144.228.77.226)  167.276 ms  166.381 ms

I would interpret this as an internal sprintlink problem.  Going from 70 to
120+ms on a single hop (50 ms for that leg!) inside a backbone provider
like them looks pretty fishy.  That exceeds the delay you get from a modem.

Signature failed Preliminary Design Review.
Feasibility of a new signature is currently being evaluated.
h.b.hotz@jpl.nasa.gov, or hbhotz@oxy.edu