Re: [mpls-linux-general] Temporary TC Patch

[Steven V. d. B. <ste...@in...>]

Hi Jon et al.,

The ability for having multile tables for LSP generation is not removed, it
just isn't available yet (sorry). I'll produce this as a seperate patch (since
i believe it has a way more wider applicability then traffic control).
The reason why it takes so long to complete this is:
   a) i used a really dirty (and slow) hack to do this in the previous version
of the patch, and i'll try to find another way now.
   b) i'm currently investigating if i can combine some multipath possibilities
in the patch

To elaborate on the last point: current multipath implementation in linux uses
a hashing based selection of nexthops connected to the same FIB entry. Since
mpls redirects the output, it loses this information. So now i'm looking if i
can't do multipath over several FIB entries, enabling multipath over a hybrid
MPLS/pure IP network (e.g. multipath over a shortest path on IP and a not so
short path over MPLS).

The goal is to get something ready by the end of next week.

While i'm at it, I must warn you that i haven't really tested the TC patch
(only tried it with UML), so you must use it with care. To avoid you wondering
why things don't seem to be working, the biggest change now is that the
*incoming* label is used to select the DSCP. In case of the ingress LER, this
means that the incoming DSCP is used (so you need host-marked traffic, or a
marker before that).

Cheers,
Steven

Jonathan Earle wrote:

> Perhaps this is a tad premature - I've just got my lab back in shape after
> the move and was about to build myself the latest and greatest Linux + MPLS.
> In reading the docs with your latest patch, am I correct in noticing that
> the ability to employ multiple tables for LSP generation has been removed?
>
> Cheers!
> Jon
>
>
>  -----Original Message-----
> From: Steven Van den Berghe [mailto:ste...@in...]
> Sent: Thursday, February 08, 2001 6:19 AM
> To: mpl...@li...; James R. Leu
> Subject: [mpls-linux-general] Temporary TC Patch
>
> Hi MPLSers,
>
> I've used the sourceforge patch manager to uplad a new tc-patch. It seems
> that the interface needs a real raw patch, and not a .tgz file. So, since
> the patch manager isn't useful for this, i'll send it on the list.
>
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