Re: [LARTC] Patch to allow for the ATM "cell tax"

["Taylor, Grant" <gtaylor@riverviewtech.net>]

Russell Stuart wrote:
> The following patch to tc allows it to perform an exact
> ATM / ADSL rate calculation.  It adds one extra keyword
> to the "tc class add htb ..." command line: "atm".  There
> isn't a lot of spare bits hanging around to record this,
> so the patch adds the feature at the expense of always 
> forcing the "overhead" parameter to be even.
> With the patch, these commands will generate a correct
> rate table for:
>
>   PPPoA + VC/Mux:  tc class add htb ... overhead 10 atm
>   PPPoA + VC/LLC:  tc class add htb ... overhead 18 atm
>   PPPoE + VC/Mux:  tc class add htb ... overhead 34 atm
>   PPPoE + VC/LLC:  tc class add htb ... overhead 42 atm
What would be the appropriate parameters for an RFC 1483 / 2684 LLC 
Encapsulation or VC Multiplexing?  Would the values above adjusted for the 
removal of PPPoX compensate?



Grant. . . .
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