In a message written on Mon, Jun 06, 2011 at 08:45:31AM -0400, Christopher Morrow wrote:
On Mon, Jun 6, 2011 at 1:19 AM, Hank Nussbacher <hank@efes.iucc.ac.il> wrote:
Will Google have inverse working by June 8th?
poking the tiger some... 'why?'
It's the network equivilent of holding open the door for someone or saying please and thank you. Civilized network operators do it to be polite. Picking on the name in Hank's e-mail: % traceroute -n efes.iucc.ac.il traceroute to efes.iucc.ac.il (128.139.202.17), 64 hops max, 52 byte packets 1 149.20.48.1 1.515 ms 0.783 ms 0.706 ms 2 149.20.65.9 2.756 ms 0.972 ms 3.156 ms 3 64.215.195.21 50.607 ms 50.524 ms 54.705 ms 4 207.138.144.46 166.234 ms 166.235 ms 166.240 ms 5 62.40.125.122 230.584 ms 230.520 ms 237.217 ms 6 128.139.188.1 230.609 ms 443.760 ms 230.629 ms 7 * * * Quick question, which network providers were involved in that trace? Have fun hitting up whois to find out! % traceroute efes.iucc.ac.il traceroute to efes.iucc.ac.il (128.139.202.17), 64 hops max, 52 byte packets 1 exit.blue.sql1.isc.org (149.20.48.1) 2.410 ms 2.275 ms 0.782 ms 2 int-0-4-0-0.r1.pao1.isc.org (149.20.65.9) 3.493 ms 2.452 ms 0.958 ms 3 ge-9-15-1G.ar1.PAO2.gblx.net (64.215.195.21) 50.488 ms 50.540 ms 54.440 ms 4 DANTE.TenGigabitEthernet7-3.ar1.FRA4.gblx.net (207.138.144.46) 166.227 ms 166.231 ms 166.217 ms 5 iucc-lb1-gw.rt1.fra.de.geant2.net (62.40.125.122) 234.928 ms 245.142 ms 244.414 ms 6 gp1-gp0-te.ilan.net.il (128.139.188.1) 230.536 ms 230.618 ms 230.655 ms 7 *^C Ah, ISC->Global Crossing->GEANT2. See, rDNS just saved me about 2 minutes of whois pain. Which is what being polite is all about, making a very minor effort on your part to save someone else a minor amount of pain. Or, if you want another view on it: http://www.nanog.org/meetings/nanog47/presentations/Sunday/RAS_Traceroute_N4... Start at slide 12. -- Leo Bicknell - bicknell@ufp.org - CCIE 3440 PGP keys at http://www.ufp.org/~bicknell/