RE: Ping times? Am i missing something [7:41151]

2002-04-10 Thread Joseph Ezerski
Ok, according to Stevens (TCP/IP Illustrated Vol 1), the ICMP Ping Packet looks like this: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Re: Ping times? Am i missing something [7:41151]

2002-04-10 Thread [EMAIL PROTECTED] (Timothy Ouellette)
Okay, so ICMP doens't specify a TTL on it's own. Doesn't IP by itself have a TTL of 255? Maybe i'm missing something. Tim On 11 Apr 2002 01:26:56 -0400, [EMAIL PROTECTED] ("Joseph Ezerski") wrote: >Ok, according to Stevens (TCP/IP Illustrated Vol 1), the ICMP Ping Packet >looks like this: >

Re: Ping times? Am i missing something [7:41151]

2002-04-11 Thread Kevin Cullimore
Re: Ping times? Am i missing something [7:41151] > Okay, so ICMP doens't specify a TTL on it's own. Doesn't IP by itself > have a TTL of 255? > > Maybe i'm missing something. > > Tim > > On 11 Apr 2002 01:26:56 -0400, [EMAIL PROTECTED] ("Joseph >

Re: Ping times? Am i missing something [7:41151]

2002-04-11 Thread Priscilla Oppenheimer
Timoue (timeout!? ;-) IP TTL is a reverse hop count. The sender sets it to some large number like 255 or 64 or 32 (depending on the OS). Each router decrements it by one. If that causes the TTL to become zero, then the packet is dead. The router discards it. The goal is to stop a packet from t

Re: Ping times? Am i missing something [7:41151]

2002-04-11 Thread [EMAIL PROTECTED] (Timothy Ouellette)
Okay, I'm much clearer on this now. So in reality, the IP TTL doesn't really measure anything anymore, we just need to make sure our routers decrement it so that a box getting an IP packet with 0 will discard it any not let it float around the networka aimlessly. Thanks for the help. Much ap