Chapter 5: IBGP Configuration and Testing

JNCIP Lab Skills Covered in this Chapter:

  • IBGP peering

    • IBGP policy

  • IBGP authentication

  • Route reflection

  • Confederations

  • IBGP timers and various other "knobs"

This chapter provides examples of JNCIP-level Internal Border Gateway Protocol (IBGP) configuration scenarios, as well as examples of the verification methods that can be used to confirm proper IBGP protocol operation. It is assumed that the configurations of the routers in your test bed are currently based on the case study criteria presented at the end of the initial system configuration, interface, and IS-IS chapters, as you will now be adding IBGP to your test bed and a functional Interior Gate Protocol (IGP) is required for proper IBGP operation. If you are unsure of the state of your routers, you should compare your configurations against those provided in the case studies at the end of Chapters 1, 2, and 4. You should also verify that all of your router interfaces and IS-IS IGP are operational before proceeding.

Because IBGP does not really care about the particulars of your IGP, these BGP configuration tasks could easily be applied to a test bed running OSPF. The use of IS-IS is highly recommended, however, as this will simplify the task of following the IS-IS–based examples in this chapter.

The proper operation of IBGP will play a critical role in the overall success of your JNCIP lab exam, as problems with IBGP will impact the operation of subsequent External Border Gateway Protocol (EBGP) and BGP-related policy tasks. A successful JNCIP candidate must possess the practical skills and protocol knowledge necessary to proficiently configure and troubleshoot the IBGP protocol in a variety of network scenarios as demonstrated in this chapter.

This chapter concludes with a case study designed to closely approximate a typical JNCIP IBGP configuration scenario. The results of key operational mode commands are provided in the case study analysis section so that you can also compare the behavior of your network to a known good example. Example router configurations that meet all case study requirements are provided at the end of the case study for comparison with your own configurations.




JNCIP. Juniper Networks Certified Internet Professional Study Guide Exam CERT-JNCIP-M
JNCIP: Juniper Networks Certified Internet Professional Study Guide
ISBN: 0782140734
EAN: 2147483647
Year: 2003
Pages: 132

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