[Cerowrt-devel] Custom SQM Script nxt.qos

Vincent Frentzel zcecc22 at c3r.es
Fri Feb 21 00:31:05 EST 2014

Hi everybody,

I wanted to share with you my custom script for SQM. It is essentialy a 2
queue system (regular/priority traffic + background) with builtin
priotization for common interactice protocols (HTTP, DNS, FTP, etc...) and
diffserv priotization on both ingress and egress.

If a diffserv is present on the packet then the queue is selected according
to it, otherwise service priotization takes place.

This allows marking at the client level for egress which I have been using
extensively (ie some of my servers are doing large downloads over HTTP and
they should not be using the priority queue).

One additional particularity is that iptables is not used, for better or
worse. I was just feeling more confident using TC only.

Link: https://raw.github.com/zcecc22/qos-nxt/master/nxt.qos

As a sidenote, I would like to point out that I am using pppoe on ceroWRT
and there is currently no way in LUCI to select "pppoe-ge00" as SQM
interface. I forced it manually in the config file, with luci displaying

As usual, feedback welcome :)

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