[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Pb MTU avec gateway woody



Le Mon, 28 Jul 2003 16:18:45 +0200, francois@tourde.org (François TOURDE) a écrit :

> Ben .... A mort que ça aide... Mais bon, quel rapport entre la gestion de la
> congestion et le fait de pas pouvoir accéder à des sites? D'autant plus que
> je ne vois pas passer ni n'empêche les paquets de contrôle de trafic au moment
> où je fais l'accès.
> 
> Je suis preneur de toute explication :)
> 
Je ne connais pas le fond de l'affaire, mais dans la config du noyau, il y a l'info
suivante :

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.


  	Fred.



Reply to: