Cisco CCNP / BSCI Exam Tutorial: ISIS Router Types06/29/2016 Tagged With: 12933, adjacency, advantage, bcmsn, Bryant, ccie, ccnp, certification, exam, hello, isis, L1, L1/L2, L2, pass, router, typesOne of the many ISIS details you must master for CCNP and BSCI exam success – ISIS router types. Learn how they work and interact from Chris Bryant, CCIE #12933.