nanog mailing list archives
Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3)
From: Cameron Byrne <cb.list6 () gmail com>
Date: Wed, 29 Jun 2011 07:34:26 -0700
On Jun 28, 2011 10:22 PM, "Mikael Abrahamsson" <swmike () swm pp se> wrote:
On Tue, 28 Jun 2011, Cameron Byrne wrote:My point was that if end-hosts had Hybla or something similar, these
proxies can be removed providing a better end-to-end solution.
Well, then you run into the nice problem of the RNCs only having 400
kilobytes of buffers per session and will drop packets if they receive more packets than that, or sometimes even just because they receive a burst of a few tens of packets at GigE linerate (because the customer with large TCP window size is talking to a GigE connected server).
The recommended "solution" from the vendor was to tune the client to a
smaller TCP window size so that their RNC wouldn't get such a large burst.
*sigh*
Sounds like a vendor specific issue :( Good tcp vs default tcp will not close the window tight due to some ephemeral loss or delay. The penalties are generally too strong in tcp for the issues of delay and loss in 3g ... this is one of the main selling points for tcp proxies .... but better done with modern tcp on the clients instead of a middle box
-- Mikael Abrahamsson email: swmike () swm pp se
Current thread:
- RE: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3), (continued)
- RE: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Leigh Porter (Jun 28)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Cameron Byrne (Jun 28)
- RE: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Leigh Porter (Jun 28)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Cameron Byrne (Jun 28)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) PC (Jun 28)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Cameron Byrne (Jun 28)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Mikael Abrahamsson (Jun 28)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Tony Finch (Jun 29)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Nick Hilliard (Jun 29)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Mikael Abrahamsson (Jun 29)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Cameron Byrne (Jun 29)
- RE: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Leigh Porter (Jun 29)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Mikael Abrahamsson (Jun 29)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Cameron Byrne (Jun 29)
- RE: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Leigh Porter (Jun 28)
- Re: Strange TCP connection behavior 2.0 RC2 (+3) Ryan Malayter (Jun 29)
- Re: Strange TCP connection behavior 2.0 RC2 (+3) Steven Bellovin (Jun 29)
- Re: Strange TCP connection behavior 2.0 RC2 (+3) Cameron Byrne (Jun 29)
- Re: [pfSense Support] Strange TCP connection behavior 2.0 RC2 (+3) Hank Nussbacher (Jun 29)