[lug] Traceroute question

[Michael Deck]

At 02:36 PM 12/13/00 -0700, you wrote:
>Michael Deck wrote:
>
> > >When you look out through that slower pipe, you see the world in 200 ms
> > >hops, when you go from the fast remote world  to your computer with
> > >traceroute, it's only the last hop showing the 200 ms.
> >
> > Why would I see the world in 200ms hops? I thought that traceroute
> > presented the inter-hop time? That was really my question...
> >
>
>Possibly traffic in one direction (the slower) was heavier? For example,
>people doing ftp downloads use up one direction more than another.

Hmm. I've probably not explained my issue very well.

I'm sitting at my firewall box. I type

$ /usr/sbin/traceroute -I -n 198.60.253.132

(which happens to be my domain name server) and I see

traceroute to 198.60.253.132 (198.60.253.132), 30 hops max, 38 byte packets
  1  204.229.110.254  197.794 ms  197.796 ms  198.676 ms
  2  207.159.128.130  186.470 ms  186.111 ms  186.681 ms
  3  207.159.128.22  186.447 ms  188.429 ms  186.776 ms
  4  144.228.96.5  186.115 ms  188.265 ms  187.247 ms
  5  144.232.6.49  186.274 ms  188.022 ms  187.507 ms
  6  144.232.18.86  188.325 ms  188.039 ms  185.861 ms
  7  144.232.18.9  221.302 ms  221.992 ms  225.127 ms
  8  144.232.6.238  221.893 ms  221.453 ms  221.235 ms
  9  144.232.132.162  245.580 ms  242.281 ms  254.683 ms
10  198.60.253.132  259.803 ms  254.478 ms  261.568 ms
11  198.60.253.132  257.081 ms  265.257 ms  248.286 ms

If I read this right, every hop takes ~200ms. Am I reading this right? What 
do the last 3 numbers on each line mean?

Now, if I go to another system and traceroute back to myself,

morte> traceroute -I -n www.cleansoft.net
traceroute to www.cleansoft.net (204.229.110.227), 30 hops max, 38 byte packets
  1  137.78.15.1  0.489 ms  0.355 ms  0.351 ms
  2  137.78.10.7  0.260 ms  0.239 ms  0.367 ms
  3  192.138.85.70  35.386 ms  232.262 ms  1.428 ms
  4  130.152.72.1  3.018 ms  3.136 ms  2.588 ms
  5  130.152.128.2  5.896 ms  5.002 ms  5.529 ms
  6  209.189.66.65  6.613 ms  5.748 ms  4.541 ms
  7  129.250.29.126  5.108 ms  5.581 ms  5.698 ms
  8  129.250.2.113  14.780 ms  14.978 ms  14.993 ms
  9  209.0.227.5  15.020 ms  16.128 ms  14.883 ms
10  209.247.11.5  14.761 ms  14.159 ms  14.704 ms
11  209.244.2.242  31.132 ms  33.360 ms  30.743 ms
12  209.245.176.110  31.866 ms  31.393 ms  31.593 ms
13  216.122.67.78  33.246 ms  33.079 ms  34.076 ms
14  204.229.110.227  272.465 ms  292.970 ms  213.102 ms

only the last hop takes ~200ms.

So, my only question is, how do I read the traceroute output? What exactly 
do the numbers mean?

If the entire difference is that my first hop is costly, that's one issue I 
can take up with the service provider. If, somehow, every hop is costly 
outbound, that's different.

To my knowledge there is no other traffic in and out.

-Mike

Michael Deck
Cleanroom Software Engineering, Inc.