nanog mailing list archives
Re: Common operational misconceptions
From: Steven Bellovin <smb () cs columbia edu>
Date: Mon, 20 Feb 2012 20:40:33 -0500
The timer for Linux is 5 minute by default but you can change it.Timer timeouts do not affect TCP MSS.
RFC 2923: TCP should notice that the connection is timing out. After several timeouts, TCP should attempt to send smaller packets, perhaps turning off the DF flag for each packet. If this succeeds, it should continue to turn off PMTUD for the connection for some reasonable period of time, after which it should probe again to try to determine if the path has changed. It's Informational, not standards track, but the problem -- and the fix -- have been known for a very long time. --Steve Bellovin, https://www.cs.columbia.edu/~smb
Current thread:
- Re: Common operational misconceptions, (continued)
- Re: Common operational misconceptions Owen DeLong (Feb 16)
- RE: Common operational misconceptions George Bonser (Feb 16)
- Re: Common operational misconceptions Masataka Ohta (Feb 16)
- RE: Common operational misconceptions George Bonser (Feb 17)
- Re: Common operational misconceptions Masataka Ohta (Feb 19)
- Re: Common operational misconceptions Valdis . Kletnieks (Feb 20)
- RE: Common operational misconceptions George Bonser (Feb 20)
- Re: Common operational misconceptions Masataka Ohta (Feb 20)
- RE: Common operational misconceptions George Bonser (Feb 20)
- Re: Common operational misconceptions Masataka Ohta (Feb 20)
- Re: Common operational misconceptions Steven Bellovin (Feb 20)
- Re: Common operational misconceptions Masataka Ohta (Feb 20)
- Re: Common operational misconceptions Steven Bellovin (Feb 20)
- Re: Common operational misconceptions Masataka Ohta (Feb 20)
- RE: Common operational misconceptions George Bonser (Feb 20)
- Re: Common operational misconceptions Masataka Ohta (Feb 20)
- RE: Common operational misconceptions George Bonser (Feb 20)
- Re: Common operational misconceptions Masataka Ohta (Feb 20)
- Re: Common operational misconceptions David Barak (Feb 17)
- Re: Common operational misconceptions Owen DeLong (Feb 17)
- Re: Common operational misconceptions Masataka Ohta (Feb 18)