ping and traceroute.



following is the output from traceroute

traceroute 10.1.11.6
traceroute to 10.1.11.6 (10.1.11.6), 30 hops max, 38 byte packets
1 10.129.1.250 (10.129.1.250) 20.618 ms 0.335 ms 0.271 ms

2 192.0.20.1 (192.0.20.1) 0.694 ms 4.660 ms 0.422 ms
3 192.0.40.1 (192.0.40.1) 0.972 ms 1.917 ms 0.873 ms
4 saptak.hostel1.iitb.ac.in (10.1.11.6) 1.120 ms 0.816 ms 0.824 ms


now if i ping the same machine it gives no output. why?


last edited by yogesh_powar : 12-12-2005 at 01:16 am.

traceroute using udp, as i recall, and ping uses icmp. the protocols are different and therefore, the network responds differently depending on the configuration of hosts, firewalls and routers.

and with the amount of ping floods the net had gone through in the last few years --- a lot of networks have disabled ping inside their perimeters

the firewall --- whether software or separate device --- takes care of that