[LARTC] Understanding of HTB classes

[LARTC] Understanding of HTB classes

[Vinod Chandran]

Hi all,

I have configured HTB classes on my public interface. I have split the 
bandwidth among two subclasses say 1:2 and 1:3.
Lets say if I configure the rate limit of say 1:2 as 250kbps with a ceil 
setting of 1000kbps,
I presume it means that the class can have bandwidth upto 1000kbps, 
provided the bandwidth is unused, if not it is assured a bandwidth of 
250kbps.

Is my understanding correct in this regards when it comes to unbounded 
classes?

Please let me know,

Thanks and Regards,
Vinod C



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Re: [LARTC] Understanding of HTB classes

[Andy Furniss]

Vinod Chandran wrote:
> Hi all,
> 
> I have configured HTB classes on my public interface. I have split the 
> bandwidth among two subclasses say 1:2 and 1:3.
> Lets say if I configure the rate limit of say 1:2 as 250kbps with a ceil 
> setting of 1000kbps,
> I presume it means that the class can have bandwidth upto 1000kbps, 
> provided the bandwidth is unused, if not it is assured a bandwidth of 
> 250kbps.

Rate is guarenteed (remember to tc bps = bytes/sec)

> 
> Is my understanding correct in this regards when it comes to unbounded 
> classes?

Don't know what you mean.

Andy.
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Re: [LARTC] Understanding of HTB classes

[Vinod Chandran]

When child class is out of bandwidth(ie the rate given to it) , it can 
borrow the bandwidth from the parent class upto its ceil limit, provided 
the bandwidth is unused.
Is this correct?

Regards,
Vinod C

Andy Furniss wrote:

> Vinod Chandran wrote:
>
>> Hi all,
>>
>> I have configured HTB classes on my public interface. I have split 
>> the bandwidth among two subclasses say 1:2 and 1:3.
>> Lets say if I configure the rate limit of say 1:2 as 250kbps with a 
>> ceil setting of 1000kbps,
>> I presume it means that the class can have bandwidth upto 1000kbps, 
>> provided the bandwidth is unused, if not it is assured a bandwidth of 
>> 250kbps.
>
>
> Rate is guarenteed (remember to tc bps = bytes/sec)
>
>>
>> Is my understanding correct in this regards when it comes to 
>> unbounded classes?
>
>
> Don't know what you mean.
>
> Andy.
>

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Re: [LARTC] Understanding of HTB classes

[Andy Furniss]

Vinod Chandran wrote:
> When child class is out of bandwidth(ie the rate given to it) , it can 
> borrow the bandwidth from the parent class upto its ceil limit, provided 
> the bandwidth is unused.
> Is this correct?

Yes - also if it has siblings under the same parent the spare bandwidth 
will be divided between them according to prio and if prios are the 
same, and parent ceil = childrens ceils, quantum, which if you don't 
specify gets calculated from rates.

Andy.
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