[c-nsp] Multilink PPP incorrect weights

[Rodney Dunn]

Ben,

I did a bit of reading on this and from everything I
can find the BW of the link actually doesn't come
in to play when sending data on the member links.
I mean the BW configured on the link.

It's the actual transmission rate of the link itself
that determines which one gets more data.

>From what I have read about the Cisco implementation
the packets are held at the bundle interface and
are transmitted on the member links as they can handle
them.

Now with PPPoX it gets tricky because there isn't really
a direct underlying backpressure mechanism to the bundle.

In your setup, where are the links actually going to?

Rodney

 On Tue, Dec 14, 2004 at 05:12:13PM +0000, Ben White wrote:
> I'm looking for a way to fix some multilink PPP via L2TP issues I've
> seen.
> 
> The problem I have is some connections are being sent from our L2TP
> provider with incorrect connection speed values.
> 
> Eg. 2 * 2Mb links, one being established with the correct speed set
> (2Mb) and one with the incorrect speed (155Mb).
> 
> They happily get bundled together, but the multilink load sharing puts
> all of the outgoing traffic down the supposedly larger link and when
> that's full it doesn't go onto the other link.
> 
> I've tried various fixes, manually setting bandwidth on the radius
> profile/virtual-template etc, however it mostly gets ignored and the
> negotiated values override it, other things only get applied to the
> bundle interface and not the individual member links.
> 
> Getting the correct speed values sent with the connections isn't
> possible.
> 
> Any ideas?
> 
> Thanks,
> 
> Ben White
> 
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