Non-segmented mLDP intra-AS (inter-area) is supported on option Band C only. Figure 1 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 does next-hop-self for BGP label routes, which re quires recursive FEC.
Figure 1. Intra-AS Non-segmented Topology
For option B, the ABR routers change the next hop of the MVPN AD routes to the ABR system IP or Loopback IP. The next-hop-self command for BGP does not change the next hop of the MVPN AD routes. Instead, a BGP policy can be used to change the MVPN AD routes next hop at the ABR.
In the meantime a BGP policy can be used to change the MVPN AD routes nexthop at the ABR.