This course is for technical professionals who design, implement, and operate IPv4 routing protocols in a service provider network consisting of routers running Cisco IOS XR Software. The primary audience for this course includes Network Operations Center Engineers, Network and Senior Engineers, and Support Engineers.

The following are prerequisites for this course:

• Students should have knowledge of the Cisco IOS XR Software configuration syntax to the extent covered in the Cisco CRS-1 Essentials of Cisco XR 12000 Series Essentials course
• Students attending this class should be able to establish, without assistance, a basic configuration for OSPF, IS-IS, and BGP as accomplished in the Cisco CRS-1 Essentials or Cisco XR 12000 Series Essentials course labs

Upon completion of this course, students should be able to:

• Describe the basic unicast forwarding architecture and infrastructure.
• Describe and apply basic routing and forwarding security.
• Describe and examine bidirectional forwarding detection.
• Explain nonstop forwarding operation.
• Configure Routing Policy Language (RPL) sets and policies.
• Design hierarchial and parameterized RPL policies.
• Configure IS-IS Level 1 and Level 2 areas and verify operation.
• Implement route redistribution and summarization in IS-IS.
• Implement RPL policies in IS-IS.
• Configure a multiple area OSPF domain and verify operation.
• Configure route redistribution filtered with an RPL policy.
• Configure autonomous systems with internal BGP full-mesh, route reflectors, and as a confederation.
• Configure external BGP between adjacent autonomous systems.
• Examine internal and external BGP operation.

This hands-on 4-day course provides an advanced look at popular IPv4 routing protocols supported in Cisco IOS XR Software. The course investigates the intricacies of Interior Gateway Protocol (IGP) operation through Open Shortest Path First (OSPF) and Intermediate System-to-Intermediate System (IS-IS) Protocol labs that engage the student in a detailed examination of the link-state database and the effects of virtually all protocol options.

The complexities of large-scale routing using the Border Gateway Protocol (BGP) are then explored, with the focus placed on scaling networks using route reflection and confederations. In addition, numerous BGP options, such as multihop, multipath, and authentication, are discussed and configured in a lab setting.