Re: HFSC not working as expected

[Alan Goodman <notifications@yescomputersolutions.com>]

Hi Michael,

Many thanks for your useful response.

Please see inline comments.

On 03/07/14 01:12, Michal Soltys wrote:
>> Connection type is ADSL, PPPoA
>>
>> Topology is this:
>>
>> Phone line -> splitter -> ADSL Router in bridge mode -> 10/100 ethernet
>> -> eth0 on CentOS 6 server
>>
>> CentOS 6 server is doing PPPoE, router is connected directly to eth0.
>>
>> I shape internet upload on ppp0 and internet download as it passes out
>> of the eth1 interface.  Eth1 is the uplink to my LAN.
>
> Ah, so essentially you have adsl router (draytek perhaps ?) that 
> translates pppoe and then sends using pppoa (it's still operates as a 
> router from what I rememeber, only mimicking pppoe server).

Its a BT Business Hub 3, which I think is made by Huawei. Im not sure of 
the technical underpinnings of how a router in bridgemode operates 
beyond I set it to bridge mode and connect it to a device that does 
PPPoE and it 'just works'.  The PPP session then runs on the connected 
device and the router is then able to handle as many packets/sec as the 
underlying link or the connected device can support.  If you could 
explain how this works in more detail, or link me a related article id 
be intrigued.

> Anyway, long story short you should use tc-stab to match adsl speed 
> properly, then the rules will need some adjustment as well. I'll put 
> some suggestions later (for once, 100mbit in default is generally bad 
> idea in default class if something faster lands there, as it will 
> instantly saturate uplink - realtime curve will make sure of that)

Do you have any examples (or links to correct examples online) of a good 
method of utilising 'tc-stab' ?  I have looked at the documentation and 
am feeling a little overwhelmed at the moment!

Alan