This holddown processs is not clear, all sources contradict between themselves and with the tests I performed in GNS3/Dynamips:R1<->R2<->R3<->R4<->R1(so 4 routers in ring)and set 1.0.0.0/8 on R1-R2, 2.0.0.0/8 on R2-R3, 3.0.0.0/8 on R3-R4, 4.0.0.0/8 o...