On 31-Oct-2001 Alan W Jurgensen wrote: > > > What is your route table looking like? > netstat -nr
Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.1.0 0.0.0.0 255.255.255.0 U 40 0 0 eth1 24.28.72.0 0.0.0.0 255.255.255.0 U 40 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 40 0 0 lo 0.0.0.0 24.28.72.1 0.0.0.0 UG 40 0 0 eth0 > what about ping and traceroute? > ping <my interface ip> > ping <my nameserver's ip> > ping www.walgreens.com > traceroute <my printerservers ip> I get mixed results from ping and traceroute: $ ping 24.93.35.32 PING 24.93.35.32 (24.93.35.32) from 24.28.72.51 : 56(84) bytes of data. 64 bytes from 24.93.35.32: icmp_seq=0 ttl=252 time=19.640 msec 64 bytes from 24.93.35.32: icmp_seq=1 ttl=252 time=14.457 msec --- 24.93.35.32 ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max/mdev = 14.457/17.048/19.640/2.594 ms [jbodnar@home init.d]$ ping www.walgreens.com PING www.walgreens.com (63.73.199.22) from 24.28.72.51 : 56(84) bytes of data. >From d1-4-1-15-0.a06.chcgil01.us.ce.verio.net (157.238.79.58): Packet filtered >From d1-4-1-15-0.a06.chcgil01.us.ce.verio.net (157.238.79.58): Packet filtered >From d1-4-1-15-0.a06.chcgil01.us.ce.verio.net (157.238.79.58): Packet filtered --- www.walgreens.com ping statistics --- 3 packets transmitted, 0 packets received, +3 errors, 100% packet loss $ traceroute www.walgreens.com traceroute to www.walgreens.com (63.73.199.22), 30 hops max, 38 byte packets 1 24.28.72.1 (24.28.72.1) 16.206 ms 11.583 ms 39.934 ms 2 66.68.0.5 (66.68.0.5) 20.804 ms 10.027 ms 9.610 ms 3 66.68.1.253 (66.68.1.253) 16.692 ms 8.087 ms 8.673 ms 4 66.68.1.234 (66.68.1.234) 9.625 ms 7.580 ms 7.274 ms 5 6207507pos5-0-0.austin.rr.com (24.93.33.29) 10.797 ms 7.888 ms 9.607 ms 6 acr1-sonet2-1-0-0.Dallasdan.cw.net (208.172.131.129) 10.356 ms 11.310 ms 12.283 ms 7 cable-and-wireless-peering.Dallasdan.cw.net (208.172.131.214) 10.596 ms 10.611 ms 11.458 ms 8 p4-1-0-0.r01.dllstx01.us.bb.verio.net (129.250.3.74) 12.684 ms 26.412 ms 15.355 ms 9 p16-3-0-0.r01.chcgil06.us.bb.verio.net (129.250.5.84) 36.781 ms 38.055 ms 36.869 ms 10 p16-7-0-0.r01.chcgil01.us.bb.verio.net (129.250.5.71) 36.704 ms 37.956 ms 34.552 ms 11 fa-2-0.a06.chcgil01.us.ra.verio.net (129.250.27.44) 40.178 ms 34.078 ms 34.625 ms 12 * d1-4-1-15-0.a06.chcgil01.us.ce.verio.net (157.238.79.58) 52.029 ms !X * 13 d1-4-1-15-0.a06.chcgil01.us.ce.verio.net (157.238.79.58) 71.672 ms !X * 165.025 ms !X So, it looks like 157.238.79.58 is a router that's filtering ICMP packets. $ ping printer PING printer.localdomain (192.168.1.5) from 192.168.1.4 : 56(84) bytes of data. 64 bytes from printer.localdomain (192.168.1.5): icmp_seq=0 ttl=60 time=3.871 msec 64 bytes from printer.localdomain (192.168.1.5): icmp_seq=1 ttl=60 time=3.437 msec 64 bytes from printer.localdomain (192.168.1.5): icmp_seq=2 ttl=60 time=5.005 msec --- printer.localdomain ping statistics --- 3 packets transmitted, 3 packets received, 0% packet loss round-trip min/avg/max/mdev = 3.437/4.104/5.005/0.663 ms $ traceroute printer traceroute to printer.localdomain (192.168.1.5), 30 hops max, 38 byte packets 1 * * * 2 * * * 3 * * * 4 * * * 5 * * * Don't quite comprehend this one. $ ping matrix.net PING matrix.net (64.245.50.178) from 24.28.72.51 : 56(84) bytes of data. 64 bytes from www0.aus.us.mids.org (64.245.50.178): icmp_seq=0 ttl=244 time=53.356 msec 64 bytes from www0.aus.us.mids.org (64.245.50.178): icmp_seq=1 ttl=244 time=458.453 msec 64 bytes from www0.aus.us.mids.org (64.245.50.178): icmp_seq=2 ttl=244 time=177.498 msec --- matrix.net ping statistics --- 3 packets transmitted, 3 packets received, 0% packet loss round-trip min/avg/max/mdev = 53.356/229.769/458.453/169.460 ms $ traceroute matrix.net traceroute to matrix.net (64.245.50.178), 30 hops max, 38 byte packets 1 24.28.72.1 (24.28.72.1) 23.855 ms 31.240 ms 20.009 ms 2 66.68.0.5 (66.68.0.5) 9.189 ms 15.000 ms 7.110 ms 3 66.68.1.253 (66.68.1.253) 8.628 ms 8.542 ms 11.046 ms 4 66.68.1.234 (66.68.1.234) 10.710 ms 14.061 ms 12.336 ms 5 6207507pos5-0-0.austin.rr.com (24.93.33.29) 11.222 ms 47.847 ms 20.924 ms 6 12.124.211.65 (12.124.211.65) 32.538 ms 35.696 ms 38.354 ms 7 gbr6-p80.dlstx.ip.att.net (12.123.17.30) 29.615 ms 35.239 ms 27.345 ms 8 gbr4-p90.dlstx.ip.att.net (12.122.5.86) 14.189 ms 26.232 ms 44.013 ms 9 gbr1-p80.auttx.ip.att.net (12.122.2.110) 30.442 ms 34.784 ms 30.990 ms 10 gar1-p360.auttx.ip.att.net (12.123.133.21) 31.732 ms 22.000 ms 36.134 ms 11 12.124.219.26 (12.124.219.26) 37.630 ms 15.682 ms 18.842 ms 12 64.245.55.11 (64.245.55.11) 120.907 ms 178.226 ms 292.408 ms 13 64.244.121.242 (64.244.121.242) 116.292 ms 29.167 ms 28.669 ms 14 64.244.121.150 (64.244.121.150) 49.176 ms 49.683 ms 33.551 ms 15 www0.aus.us.mids.org (64.245.50.178) 22.138 ms 54.761 ms 21.809 ms So ping works for 2 out of 3 (the third seems to be filtered by a router). traceroute for one gets to the router, for another goes nowhere and for the third works just fine. -- Jason Bodnar [EMAIL PROTECTED]
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