Non-segmented mLDP intra-AS (inter-area) is supported on Option C only. Figure: Intra-AS Non-segmented Topology shows a typical intra-AS topology with a backbone IGP area 0 and access non-backbone IGP areas 1 and 2. In these topologies, the ABRs usually do a next-hop-self for BGP label routes, which requires recursive FEC.
Figure: Intra-AS Non-segmented Topology
