As we know it is not configure the load-balance by default on the MPLS-VPN network.
We can configure the tunnel-policy to modify the default number of iterations of the LSP.
The command is as below:
#
tunnel-policy internet //configure the tunnel policy, set the load-balance number is 2
tunnel select-seq lsp load-balance-number 2
#
Then bind the tunnel-policy on the VPN-Instance.