end-end packet delay?


 
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Special Forums IP Networking end-end packet delay?
# 1  
Old 12-11-2005
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 03:16 AM..
# 2  
Old 12-12-2005
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.
# 3  
Old 12-12-2005
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
# 4  
Old 12-13-2005
but ?

how dow we disable ICMP ECHO packets?
# 5  
Old 12-13-2005
the firewall --- whether software or separate device --- takes care of that
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