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alpine-devel

Re: [alpine-devel] Quality of Service

From: Natanael Copa <natanael.copa_at_gmail.com>
Date: Mon, 09 Feb 2009 11:26:11 +0100

On Mon, 2009-02-09 at 12:48 +0300, Ilya Strelkin wrote:
> Hi !
>
> I am posting the alpha version of startup script to run the QoS at
> Alpine router.

way cool!

> This script uses iproute2 tc (traffic control) tool and has the
> separate configuration file.
> The detailed documentation that discusses Quality of Service
> mechanisms will be posted soon to the Documentation section of
> wiki.alpinelinux.org.
>
> Technical Details:
>
> 1. Installation:
>
> - The attached file init-d-qos is the startup script, should be
> placed as /etc/init.d/qos.
> - The attached file conf-d-qos is the configuration file; should be
> placed as /etc/conf.d/qos
>
> 2. Startup:
>
> - Check which traffic control actions will be taken with
> '/etc/init.d/qos compile'
> - Start QoS with '/etc/init.d/qos start'
> - Check status with '/etc/init.d/qos status'
> - If ok then make startup link with 'rc_add qos' or add appropriate
> "up" references into /etc/network/interfaces file
>
> 3. Main Idea:
>
> The iproute2 tc tool is used. Setting rate about 5-10% less than
> real we try to control queue at the Router side.
> A data stream is being controlled by means EGRESS shaping or/and
> INGRESS policing
>
> 4. Supported Queuing Disciplines:
>
> At root level HTB, HFSC, PRIO queuing disciplines are supported,
> for leafs PFIFO, SFQ, RED queuing disciplines are supported
>
> 5. Supported QoS Schemes:
>
> EGRESS - HFSC or HTB # HFSC is good with latency control, HTB is
> good with bursts control
> |
> \ Interactive (guarantee: 20%) PFIFO # no packet reordering
> due to VoIP RTP
> |
> \ Privileged (guarantee: 50%, sharing up to 100%) PFIFO # no
> packet reordering due to RTP and IPSEC
> |
> \ Best-Effort (guarantee: 30%, sharing up to 100% if not used
> by Privileged) SFQ or RED # Fair Queuing or Random Early Detection
> (>10mbit/sec links)
>
> EGRESS - PRIO # for variable or unknown rates
> |
> \ Interactive (guarantee: 20%) TBF # ultimate priority for
> interactive traffic
> |
> \ HTB
> |
> \ Privileged (guarantee: 50%, sharing up to 100%) PFIFO #
> no packet reordering due to VoIP RTP and IPSEC
> |
> \ Best-Effort (guarantee: 30%, sharing up to 100% if not
> used by Privileged) SFQ or RED # Fair Queuing or Random Early
> Detection (>10mbit/sec links)
>
> INGRESS
> |
> \ Interactive traffic policing (20%) then CONTINUE action
> |
> \ Privileged traffic policing (50%) then CONTINUE action
> |
> \ Best-Effort traffic policing (30%) then DROP action
>
> 6. Default Schema and Traffic Classification (may be changed according
> to custom needs):
>
> up-link - HFSC, down-link - HTB,
>
> Interactive (PFIFO): ACK, payload <64 bytes; ICMP, UDP, TOS: 0x10,
> 0x18, 0xb8
> Privileged (PFIFO): SSH, BGP, RDP, AH, ESP, TOS: 0x88
> Best-Effort (SFQ): Any other unclassified traffic
>
>
> 7. To do list:
>
> 1. multiple WAN interface support
> 2. code optimizations/refinements, bug fixes
> 3. monitoring tools
> 4. ...Any suggestions are very welcome...

the config looks very complicated (and even includes functions)
Would it be possible to simplify so its posible to be used by deadly
people too? ;)

I think I will add them as is to the iproute2 package for now.

>
> Ilya S.
>

Thanks alot!

-nc




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Received on Mon Feb 09 2009 - 11:26:11 UTC