Content

Configuring IS-IS on Cisco IOS

This set of lab exercises contains all the exercises associated with the Configuring Cisco Routers for Integrated IS-IS (CISIS). The lab exercises cover all aspects of IS-IS configuration, including:

  • Configuring routers for IP and CLNS routing
  • Interconnecting multiple IS-IS areas
  • Extending IS-IS Level-2 area across Level-1 area
  • Configuring timers to optimize adjacency-related events
  • Configuring Redistribution and Summarization
  • Configuring Roulte-Leaking
  • Optimize IS-IS across NBMA networks
This set of exercises is an ideal supplement to Web-based CISIS training or as additional hands-on training for students who have attended CISIS training in the past and would like to refresh their IS-IS configuration skills.

Content

This set of lab exercises contains the following exercises:

Objectives

Upon finishing this set of exercises, you will be able to:
Prepare CLNS addressing plan (NET addresses)

  • Configure L1L2 IS-IS routing within the workgroup for routing CLNS and IP
  • Observe the type of adjacencies being established between workgroup routers and monitor the adjacency events between neighbors
  • Check the contents of the CLNS and IP routing table and IS-IS databases (summary of L1 and L2 LSDBs)
  • Convert workgroup area into L1 area
  • Provide a transport across L1 area and between separate L1 areas by configuring a common L2 area
  • Verify intra- and inter-area routing tables
  • Explain how L1 routers are informed about an exit point out of the area and verify what is the preferential exit point for the L1 area
  • Verify the DIS election on the multi-access network
  • Speed up the convergence on neighbor loss situation
  • Use the debug commands to observe the LSP flooding on link loss situation
  • Configure summarization on L1L2 border router
  • Redistribute external subnets into IS-IS
  • Use new Cisco IOS features of IS-IS and realize what changes were introduced into a database representation
  • Leak L2 routes into L1 area by the use of redistribution
  • Filter internal L1 subnets from L2 updates originated by the boundary L1L2 router
  • Control and monitor the LSP flooding process by using mesh groups and WAN link blocking

Importance

This lab bundle is mandatory for students attending the Internet-delivered CISIS training, as it provides the only means of getting the desired hand-on skills in IS-IS configuration and troubleshooting. It is also highly recommended to students who have attended the CISIS course in the past and would like to improve or refresh their configuration and troubleshooting skills.

Target Audience

The course is targeted at pre- and post-sales technical support engineers who have to design and implement Integrated IS-IS networks.

Prerequisite Knowledge

To successfully complete this set of exercises, you need in-depth knowledge of Integated IS-IS as well as knowledge of Cisco IOS commands associated with IS-IS. This knowledge is best gained by attending Configuring Cisco Routers for Integrated IS-IS (CISIS) course. In-depth understanding of generic IP routing features as gained by attending Building Scalable Cisco Internetworks (BSCI) course is also required.