+==> 2516 (v4ISP)
                          /
                         /
       +============== 65106
      /
     /          +-- 6939 (v6ISP)
    /          /                        
   /  +-------/---+--> 20473 (v4ISP)   
  /  /       /   /                                  
65003(J) == 65003(N) ----------- 65003(M)         
    \        \   \                     \         
     +--------\---\------------ 65045   \       
               \   \              \      +--> 9178 (v4ISP)
                \   +----- 65107   \
                 \           \      +==> 58879 (v4ISP)
                  +-- 65001   \
                        \      +==> 36352 (v4ISP)
                         \
                          +==> 11872 (v4ISP)

----: Peer connected via GRE tunnel
====: Peer connected via GRE6 tunnel
--->: Peer connected physically
===>: Non-BGP link, physically connected