WernerRätscher: click-configuration

[Eddie Kohler]

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Date: Mon, 28 May 2001 14:57:10 +0200
From: Werner =?iso-8859-1?Q?R=E4tscher?= <werner.raetscher at mchp.siemens.de>
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To: Eddie Kohler <kohler at aciri.org>
Subject: click-configuration
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Hi Eddie,

I 'm trying to run a performance measurement on a router based on the
"polling linux" mode mentioned in your paper. Therefore I configured a
pc as udp generator with the udpgen.click configuration file in the
click distribution. The udp receiver just looks like:
      PollDevice -> Counter -> Discard;

If I directly connect the generator and the receiver over a hub, it
works perfectly. If I connect those PCs over the polling linux router, I
face a strange kind of problem: the PollDevice of the router gets all
packets I've sent from the generator, but it doesn't forward them to the
next click-element (ToLinux). If I read the ToLinux-tickets handler it
says "-1 -1 unscheduled". I wonder what happens to the packets? Why are
they not forwarded to Linux? Is something wrong with my polling linux
configuration file? Attached is this configuration file ( it's very
short).

Can you please send me the configuration you have used for measuring the
forwarding rate of polling linux?

Kindly Regards,
Werner

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 name="PollingLinux.click"
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 filename="PollingLinux.click"

// PollingLinux.click

// This script configures a Polling Linux Router

pd1 :: PollDevice(eth2) -> tl1 :: ToLinux(eth2);
fl1 :: FromLinux(fake2, 192.168.10.0/24) 
	-> q1 :: Queue(100)
	-> td1 :: ToDevice(eth2);
pd2 :: PollDevice(eth3) -> tl2 :: ToLinux(eth3);
fl2 :: FromLinux(fake3, 192.168.11.0/24) 
	-> q2 :: Queue(100) 	
	-> td2 :: ToDevice(eth3);

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