Please explain in detail Cisco fiar-queueing

Posted on 2006-04-29
Medium Priority
Last Modified: 2012-05-05
I need to figure out how to get fair queuing working! There is no clear explanation of it anywhere online and Cisco's site is terrible at explaining what the difference between congestive discard threshold, number dynamic conversations, number reserveable conversation queues.  I mean, all these buzz words are thrown around with a clear idea of what is a conversation, what is a reserveable conversation etc.  For me, I need to look at it from a packet ingress, egress level.  To make things worse, when you look at the 'show fair-queue vlan10' command, there is a input queue and an output queue?! Where in the world did I set the input queue? It's all very frustrating.

I have the cisco3350 working now, but with a 1000+ users behind it, it seems like it is giving worse performance than a slackware Linux box I had with the fair-queuing kernel.  Either the Cisco can’t handle the traffic (>40 Mbps) or I’m not setting the queuing parameters correctly.

I have tried playing with various values in the fair-queue parameters, but it doesn’t do dilly squat.  What a POS.  

Please don't direct me to Cisco's website because it doesn't explain it clearly enough for me...maybe I'm not getting it, is there anyone out there that can explain it in plain english? THanks!

Question by:v-train
1 Comment

Accepted Solution

rshooper76 earned 500 total points
ID: 16570110

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