Re: [HELP] Traceroute

2001-04-07 Thread Dave Hodgkinson 

Alex Page [EMAIL PROTECTED] writes:

 On Thu, Apr 05, 2001 at 05:37:34PM +0100, Dominic Mitchell wrote:
 
  You probably want:
 
  TCP/IP Illustrated, Volume 1: The Protocols, 
 
 Gah, I've got a copy of that on my shelf. Really should get round
 to reading it at some point...

Ah, "bought any good books lately?". There are some books that are
just good to _own_

-- 
Dave Hodgkinson, http://www.hodgkinson.org
Editor-in-chief, The Highway Star   http://www.deep-purple.com
  Interim CTO, web server farms, technical strategy

Re: [HELP] Traceroute

2001-04-07 Thread Alex Page 

On Sat, Apr 07, 2001 at 06:59:44AM +0100, Dave Hodgkinson wrote:
 Alex Page [EMAIL PROTECTED] writes:

   TCP/IP Illustrated, Volume 1: The Protocols, 

  Gah, I've got a copy of that on my shelf. Really should get round
  to reading it at some point...

 Ah, "bought any good books lately?". There are some books that are
 just good to _own_

I didn't buy it... it was a present from a guilty former employer when
he didn't give me the permanent position he'd promised me when I joined
the company after graduation. Also got O'Rielly's HTML and XHTML, which
my girlfriend has since lost... *grr*

Alex
-- 
"I ask for so little. Just let me rule you, and you
 can have everything that you want." - Jareth, Labyrinth

Re: [HELP] Traceroute

2001-04-05 Thread Roger Burton West 

On Thu, Apr 05, 2001 at 10:33:19AM -0400, Andy Williams wrote:
Hi,

Can any one tell me what this traceroute actually means... it has me
completely confused (not that difficult actually!!)

Yup. The machines on hops 11-24 aren't answering the traceroute
packets, but are passing them on. Possibly a routeing loop if you'd
normally expect to see fewer hops there.

Roger (won't be along this evening, not getting paid for the last
month's work. Gizza job!)

Re: [HELP] Traceroute

2001-04-05 Thread Dominic Mitchell 

On Thu, Apr 05, 2001 at 10:33:19AM -0400, Andy Williams wrote:
 Hi,
 
 Can any one tell me what this traceroute actually means... it has me
 completely confused (not that difficult actually!!)
 
 traceroute 195.153.113.229
 traceroute to 195.153.113.229 (195.153.113.229), 30 hops max, 40 byte
 packets
  1  chromium.pair.net (209.68.1.224)  1.814 ms  1.067 ms  0.569 ms
  2  beauty.pair.net (192.168.1.2)  1.744 ms  1.472 ms  0.813 ms
  3  POS3-2.GW3.PIT1.ALTER.NET (157.130.48.161)  1.003 ms  1.520 ms  1.621
 ms
  4  518.at-2-0-0.XR1.DCA1.ALTER.NET (152.63.36.250)  6.362 ms  6.487 ms
 6.001 ms
  5  295.at-7-1-0.XR1.DCA8.ALTER.NET (146.188.163.10)  7.885 ms  6.676 ms
 8.041 ms
  6  POS6-0.BR2.DCA8.ALTER.NET (152.63.35.189)  8.887 ms  8.094 ms  8.770
 ms
  7  204.6.140.117 (204.6.140.117)  7.447 ms  8.928 ms  8.285 ms
  8  ne.peering.tier1.us.psi.net (154.13.2.34)  14.977 ms  13.005 ms
 12.713 ms
  9  204.6.134.154 (204.6.134.154)  87.708 ms  87.232 ms  86.990 ms
 10  5-11-leaf-int.lf1.cityreach.uk.psi.net (154.32.11.5)  83.906 ms
 83.318 ms  83.721 ms
 11  * * *
 12  * * *
 13  * * *
 14  * * *
 15  * * *
 16  * * *
 17  * * *
 18  * * *
 19  * * *
 20  * * *
 21  * * *
 22  * * *
 23  * * *
 24  * * *

Here it went th next router went wihtout responding for a while (it may
have been rebooting).

 25  ci217.cityreach.uk.psi.net (154.32.30.217)  97.396 ms !X * *
 26  ci217.cityreach.uk.psi.net (154.32.30.217)  95.940 ms !X *  94.271 ms
 !X

!X means the router administratively prohibited your packets from
passing.  ie: it disallows traceroutes.  Try connecting to a service on
that machine, eg: "telnet 195.153.113.229 80".  That stands a better
chance of working.

Incidentally, the traceroute man page contains a couple of good examples
of "funny" outputs.

-Dom