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Full Discussion: Puzzling Traceroute output
Special Forums IP Networking Puzzling Traceroute output Post 302339445 by gaspol on Thursday 30th of July 2009 01:57:10 PM
Old 07-30-2009
Puzzling Traceroute output

This is the output that I get every so often when trying to do a traceroute to the web server whenever it's inaccessible:


Code:
traceroute to 64.40.98.181 (64.40.98.181), 30 hops max, 40 byte packets 
1 207.97.207.194 (207.97.207.194) 2.625 ms 2.840 ms 2.968 ms 
2 core1-5.iad1.rackspace.com (69.20.2.18) 0.290 ms 0.356 ms 0.849 ms 
3 vlan901.edge3.iad1.rackspace.com (69.20.1.3) 0.845 ms 0.848 ms 1.091 ms 
4 bbr1.iad1.rackspace.net (69.20.2.193) 0.817 ms 1.052 ms 1.049 ms 
5 rt0as-equinix.vx.shawcable.net (206.223.115.20) 1.053 ms 1.172 ms 1.168 ms 
6 rc2as-ge2-0-0.vx.shawcable.net (66.163.64.2) 1.014 ms 0.590 ms 0.624 ms 
7 rc1nr-pos0-8-0-0.wp.shawcable.net (66.163.77.93) 52.483 ms 52.480 ms 52.469 ms 
8 rc2so-pos0-8-5-0.cg.shawcable.net (66.163.76.193) 69.078 ms 69.061 ms 69.065 ms 
9 rc2wh-pos0-15-5-0.vc.shawcable.net (66.163.76.186) 82.930 ms 82.912 ms 82.917 ms
10 ra2wh-tge2-1.vc.shawcable.net (66.163.69.186) 154.364 ms 154.584 ms 154.582 ms
11 rx0wh-net-nation.vc.bigpipeinc.com (64.251.87.170) 80.240 ms 80.221 ms 80.402 ms
12 64.40.105.25 (64.40.105.25) 80.454 ms 80.628 ms 80.816 ms
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * hostwaydcs.com (64.40.103.106) 78.438 ms 78.419 ms

Could anyone offer an explanation why hops 13-17 are timing out yet hop 18 shows up? And Hop 18 isn't even the destination IP? Thanks!

Last edited by DukeNuke2; 07-30-2009 at 05:05 PM..
 

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ppmtosixel(1)                                                 General Commands Manual                                                ppmtosixel(1)

NAME
ppmtosixel - convert a portable pixmap into DEC sixel format SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC LJ250 color inkjet printer. If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file. OPTIONS
-raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com- pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni- tude larger than a compressed file and prints much slower. -margin If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci- fied, a 1.5 inch left margin will offset the image. PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?. BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation. SEE ALSO
ppm(5) AUTHOR
Copyright (C) 1991 by Rick Vinci. 26 April 1991 ppmtosixel(1)
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