Messages in this thread |  | | | Date | Wed, 2 Mar 2011 07:41:30 +0100 (CET) | | From | Mikael Abrahamsson <> | | Subject | Re: txqueuelen has wrong units; should be time |
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On Tue, 1 Mar 2011, Stephen Hemminger wrote:
> It is possible to build an equivalent to WRED out existing GRED queuing > discipline but it does require a lot of tc knowledge to get right.
To me who has worked with cisco routers for 10+ years and who is used to the different variants Cisco use, tc is just weird. It must come from a completely different school of thinking compared to what router people are used to, because I have tried and failed twice to do anything sensible with it.
> The inventor of RED (Van Jacobsen) has issues with WRED because of the > added complexity of queue selection. RED requires some parameters which > the average user has no idea how to set.
Of course there are issues and some of them can be adressed by simply lowering the queue depth. Yes, that might bring down the performance of some sessions, but for most of the interactive traffic, never buffering more than 40ms is a good thing.
> There are several problems with RED that prevent prevent VJ from > recommending it in the current form.
Ask if he prefers FIFO+tail drop to RED in current form.
-- Mikael Abrahamsson email: swmike@swm.pp.se
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