[3943] in North American Network Operators' Group
Re: MFS WorldCom/WilTel/LDDS
daemon@ATHENA.MIT.EDU (Paul A Vixie)
Thu Aug 29 18:13:04 1996
To: nanog@merit.edu
In-Reply-To: Your message of "Thu, 29 Aug 1996 14:47:26 EDT."
<199608291847.OAA18850@saint.heaven.net>
Date: Thu, 29 Aug 1996 15:04:05 -0700
From: Paul A Vixie <paul@vix.com>
> > we can increase fairness using smart queuing and other technology tricks
>
> If that can be and is done, it's fine with me, but will it be done in
> time? My growth is already being hindered by people being unable to
> get through the net's core to sites they want to reach. They leave
> the net, disillusioned. It's hard to imagine what things will be like
> when the looming UDP-based-multi-media explosion is added to this.
Since I use programmable routers, I plan to reprogram them such that when
an interface output queue is full or getting full, and it's time to do
Van's trick of "pick a number from 1 to N+1 and destroy that packet", the
chance of a UDP getting blasted will be higher than for a TCP.
This is predicated on (1) TCP is mostly well behaved, except when it comes
form a Netscape browser opening too many (more than one) simultaneous TCP
connection to the same destination; (2) UDP apps I care about, like DNS,
will do reasonable things like fallback and timeout and retry; and (3) it
is OK to violate the layering if it makes your network stop melting.
If you think this would be a useful feature, ask Cisco to make it part of SPD.
