nanog mailing list archives
Re: IP Fragmentation - Not reliable over the Internet?
From: Owen DeLong <owen () delong com>
Date: Tue, 27 Aug 2013 11:47:15 -0700
On Aug 27, 2013, at 07:33 , Valdis.Kletnieks () vt edu wrote:
On Tue, 27 Aug 2013 00:34:57 -0700, Owen DeLong said:That's a lot of questions he didn't ask.This isn't your first rodeo. You should know by now that the question actually asked, the question *meant* to be asked, and the question that actually needed answering are often 3 different things.If I send a packet out as a legitimate series of fragments, what is the chance that they will get dropped somewhere in the middle of the path between the emitting host and the receiving host?To my thinking, the answer to that question is basically "pretty close to 0 and if that changes in the core, very bad things will happen."Saku Ytti and Emile Aben have numbers that say otherwise. And there must be a significantly bigger percentage of failures than "pretty close to 0", or Path MTU Discovery wouldn't have a reputation of being next to useless.
No, their numbers describe what happens to single packets of differing sizes. Nothing they did describes results of actually fragmented packets. Owen
Current thread:
- IP Fragmentation - Not reliable over the Internet? Christopher Palmer (Aug 26)
- Re: IP Fragmentation - Not reliable over the Internet? Valdis . Kletnieks (Aug 26)
- Re: IP Fragmentation - Not reliable over the Internet? Owen DeLong (Aug 27)
- Re: IP Fragmentation - Not reliable over the Internet? Valdis . Kletnieks (Aug 27)
- Re: IP Fragmentation - Not reliable over the Internet? Blake Dunlap (Aug 27)
- Re: IP Fragmentation - Not reliable over the Internet? Owen DeLong (Aug 27)
- Re: IP Fragmentation - Not reliable over the Internet? Tore Anderson (Aug 27)
- Re: IP Fragmentation - Not reliable over the Internet? Emile Aben (Aug 28)
- Re: IP Fragmentation - Not reliable over the Internet? Owen DeLong (Aug 28)
- Re: IP Fragmentation - Not reliable over the Internet? Emile Aben (Aug 29)
- Re: IP Fragmentation - Not reliable over the Internet? Owen DeLong (Aug 27)
- Re: IP Fragmentation - Not reliable over the Internet? Valdis . Kletnieks (Aug 26)
- Re: IP Fragmentation - Not reliable over the Internet? Emile Aben (Aug 27)
- Re: IP Fragmentation - Not reliable over the Internet? Saku Ytti (Aug 27)
- Re: IP Fragmentation - Not reliable over the Internet? Leo Bicknell (Aug 27)
- Re: IP Fragmentation - Not reliable over the Internet? Dave Brockman (Aug 27)
- Re: IP Fragmentation - Not reliable over the Internet? Benno Overeinder (Aug 29)