ICCP may stuck in “In process/Down” state when there’s some asymmetric design/configuration. Those possibility includes: Junos version mismatch on two PEs; BFD single-hop/multihop mismatch on two PEs The following example is trying to build ICCP connection between R1 and R2. R1 is running on 12.3R9.4, R2 is running 13.3R1.8. The configuration of R1 is given. The … [Read more...]