Cisco CCNP / BSCI Exam Tutorial: ISIS Router Types

To complete the BSCI assessment and <a href="http://www.youtube.com/watch?v=71OIrFHZs6s">bridge saw</a> make your CCNP, you've got to know ISIS inside and out. There are many parallels between ISIS and OSPF, but one major difference is that ISIS has three various kinds of routers - Level 1 (L1), Lev