[e2e] Mixed ECN and Non-ECN traffic flows.
simon at limmat.switch.ch
Mon Oct 21 01:34:50 PDT 2002
On Tue, 15 Oct 2002 16:17:18 -0500 (CDT), Kacheong Poon <poon at cs.wisc.edu> said:
> Included message from Kostas Pentikousis <kostas at cs.sunysb.edu>:
>> Unfortunately, I have no references on Solaris support for ECN. Any
>> pointers will be appreciated.
> Do a `man tcp` on a Solaris 9 system and you can find some info.
> And I believe you can also find some info in the Solaris tuning
> guide. I am not sure about the guide's URL, but you should be able
> to find it in http://docs.sun.com/
Yes, but once you have found the document
and managed to activate ECN on your host (ndd -set /dev/tcp
tcp_ecn_permitted 2), you may no longer be able to access
http://docs.sun.com/ . At least from here there [184.108.40.206] seems to
be something on the path to docs.sun.com that blackholes TCP SYN
packets with the ECN flag.
(ftp.cisco.com used to have the same problem but that was fixed.)
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