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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