FreeBSD router problems

Barney Cordoba barney_cordoba at yahoo.com
Mon Jul 15 15:06:34 UTC 2013


--------------------------------------------
On Sun, 7/14/13, Eugene Grosbein <eugen at grosbein.net> wrote:

 Subject: Re: FreeBSD router problems
 To: "Barney Cordoba" <barney_cordoba at yahoo.com>
 Cc: freebsd-net at freebsd.org, "isp" <mline at ukr.net>
 Date: Sunday, July 14, 2013, 1:17 PM
 
 On 14.07.2013 23:14, Barney Cordoba
 wrote:
 > So why not get a real 10gb/s card? RJ45 10gig is here,
 
 > and it works a lot better than LAGG.
 > 
 > If you want to get more than 1Gb/s on a single
 connection,
 > you'd need to use roundrobin, which will alternate
 packets
 > without concern for ordering. Purists will argue
 against it,
 > but it does work and modern TCP stacks know how to deal
 
 > with out of order packets.
 
 Except of FreeBSD's packet reassembly is broken for long
 time.
 For example, http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/167603
 
 _______________________________________________
 
Also, IP fragmentation and TCP segments are not the same thing. TCP
segments regularly will come in out of order, NFS is too stupid to do
things correctly; IP fragmentation should not be done unless necessary
to accommodate a smaller mtu.

BC



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