Re: [mpls-linux-general] multiple FTN-NHLFE associations

[James R. L. <jl...@mi...>]

No this functionality does not exist but I have wanted it for sometime.

I already have ideas in my head of how I would like to do it.  I'll
try not to impose my views too much but here is where you should start.

First, make sure to get the latest version of my code.  I plan on releasing
it soon, but I haven't finished the release process yet.  You can grab
the latest from my P4 tree (if you nee help doing this let me know I can
send you an email with all of the details).

Second I envision this feature being an instruction which could be
attached to a NHLFE or an ILM.  Currently there is a 'FWD' instruction.
Which fowards to just one NHLFE.  I think a "MFWD" or something like that,
would potentially forward to mutiple NHLFE.  Flags that are part of this
instructions would dictate if the MFWD required replications (multicast case)
or an algorithm to determine how to choose from the list of NHLFE.  If your
interested in different algorithms to try let me know I have a couple in mind.

I can give you more specific pointers into the code if you would like.

On Fri, Sep 24, 2004 at 06:16:56PM +0200, Stefano Avallone wrote:
> Hi all,
> 
> we are interested in multiple FTN-NHLFE associations. Our goal is to split  
> a single flow (identified by means of source and dest address and port,  
> protocol) over different LSPs. According to RFC 3031, the FTN may map a  
> particular label to a set of NHLFEs, but exactly one element of the set  
> must be chosen before the packet is forwarded. Does mpls-linux already  
> contain some code about such functionality? If not, any hint on how to  
> proceed?
> 
> Thanks a lot in advance,
> Stefano
> 
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-- 
James R. Leu
jl...@mi...