Label allocation and substitution policy

Here is a new method for controlling label advertisements on MPLS ingress and AS border routers (ASBRs). A policy can now be configured to generate labels on a per-route basis by specifying a label allocation policy using the allocation label-allocation-policy statement at the [edit routing-instances routing-instance-name routing-options label] hierarchy level. To configure the label allocation policy, include the label-allocation statement at the [edit policy-options policy-statement policy-statement-name term term-name then] hierarchy level.