The MPLS-OPS Archive

["Thomas D. Nadeau" <tnadeau@cisco.com>]

At 11:22 AM 11/27/2002 +0100, Roberto.Guglielmi@alcatel.it wrote:
>Hi Tom,
>tracking the archives I found some emails where you specified that each 
>tunnel instance, in the TE tunnel table, has one LSP per instance and that 
>it *may* be convenient to associate a "group" of LSPs in the LSR MIB 
>together using this primary XCindex, but that is not mandatory. This is 
>not necessarily mandatory, since you can have distinct XCindexes for each 
>underlying LSP as well.

         To add some context, that discussion was concerning how to map
traffic onto multiple parallel TE tunnel LSPs. My suggestion was to
either have the FTN MIB map traffic onto three different tunnel heads
each of which had a single LSP signaled, or have a single tunnel
signal 3 LSPs that are connected together via the XCindex.

>In my opinion, even if you associate a "group" of LSPs  together using the 
>XCindex, the mplsTunnelXCPointer can only point to one of the XC entries 
>because it's a RowPointer. Am I correct?

         Yes, this is correct.  A RowPointer only points at the first 
accessible
column in the XCTable that refers to the LSP in question.

         --Tom

>How can you associate multiple LPSs to one TE tunnel instance?
>
>Thanks in advance,
>Roberto


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