Cisco BSCI 3.0: The IS-IS Protocol

This course is included in our On-demand training solution.


To enable you to describe the benefits of IS-IS as a routing protocol, how IS-IS operates, and how it is implemented in large, enterprise networks

Target Audience

Candidates for Cisco CCNP, CCDP, CCIP, and Cisco CCIE Routing and Switching and CCIE Communications and Services certifications; network administrators, technicians, and senior network support staff who are responsible for implementing and managing network environments


CCNA certification; practical experience with deploying and operating networks based on Cisco network devices and Cisco IOS software is strongly recommended

Expected Duration

200 min.

Course Objectives

Cisco BSCI 3.0: The IS-IS Protocol

  • identify the features and principles of, and issues associated with Integrated IS-IS routing.
  • identify the features of the End System-to-Intermediate System (ES-IS) protocol and the OSI routing levels.
  • recognize the differences between IS-IS and OSPF.
  • identify the features and applications for network services access points (NSAP) and network entity title (NET) addresses.
  • identify the IS-IS routing levels, and the features of intra-area and interarea addressing and routing.
  • recognize the types of IS-IS protocol data units and how routers use link-state packets.
  • recognize the features of IS-IS implementation in a non-broadcast multi-access or broadcast network.
  • recognize the features of IS-IS link-state packets, hello packets, and link-state database (LSD) synchronization.
  • identify the commands to configure Integrated IS-IS in a Connectionless Network Service environment.
  • identify the commands to optimize IS-IS and configure route summarization.
  • recognize how to verify IS-IS configuration and CLNS IS-IS structures.
  • enable the Integrated IS-IS protocol and optimize the configuration.