From: Christian Mayrhuber (christian.mayrhuber_at_gmx.net)
Date: Wed 07 Jan 2004 - 17:50:47 GMT
christian niessner wrote:
>
> das ist aber nicht zufaellig das tcp_ecn problem?
>
> cat /proc/sys/net/ipv4/tcp_ecn
> echo 0 > /proc/sys/net/ipv4/tcp_ecn
>
> weil, imho, bis 2.4.18 war default 0, ab 2.4.19 ist default 1...
>
> ciao,
> marvin
>
Ja ist es! (Yes it is!)
Vielen Dank!
Here is what /usr/src/linux/Documentation/Configure.help says about it:
TCP Explicit Congestion Notification support
CONFIG_INET_ECN
Explicit Congestion Notification (ECN) allows routers to notify
clients about network congestion, resulting in fewer dropped packets
and increased network performance. This option adds ECN support to
the Linux kernel, as well as a sysctl (/proc/sys/net/ipv4/tcp_ecn)
which allows ECN support to be disabled at runtime.
Note that, on the Internet, there are many broken firewalls which
refuse connections from ECN-enabled machines, and it may be a while
before these firewalls are fixed. Until then, to access a site
behind such a firewall (some of which are major sites, at the time
of this writing) you will have to disable this option, either by
saying N now or by using the sysctl.
If in doubt, say N.
An enty in /etc/sysctl.conf: net/ipv4/tcp_ecn=0
and "systcl -p" will do away with this problem.
-- lg, Chris _______________________________________________ Vserver mailing list Vserver_at_list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver