[j-nsp] LSP load balancing

[The Drifter]

                         ------stm-1---
                        -----------------
Router A1         -----------------       Router B1
        |                ----------------            |
        |                                            |
        |                                            | stm-4
        |                                            |
        |              -----------------             |
Router A2         -----------------       Router B2
                        ----------------


In Juniper document following  is suggested to share incoming traffic 
between A1--B1 and A2--B2 links:
On B1: Configre 7xLSPs to A1 and A2 with CSPF (admin colors)
On B2: Configre 7xLSPs to A1 and A2 with CSPF (admin colors)

Has anyone tried using Aggregate interfaces to form a single LSP for all 
links (A1-B1) and anoth single LSP (A2-B2) and then use the following:
On B1: Configre 2xLSP to A1 and A2 with CSPF (admin colors)
On B2: Configre 2xLSPs to A1 and A2 with CSPF (admin colors)

Appreciate any information, experience, config in deploying this.

Regards,
Waters

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