Lesson 1: Cisco IOS XR Essentials (IOSXRE) v1.0 – Service Provider Architecture, IOS XR, and Core Foundations

This lesson provides guided coverage of service provider architecture, ios xr, and core foundations within the Cisco IOS XR Essentials (IOSXRE) v1.0 Training.

Topics Covered

• Service provider architectures, access, aggregation, core, edge, and transport roles
• Cisco IOS XR, ASR, NCS, router hardware, software, and operational workflow
• IS-IS, OSPF, BGP, MPLS, Segment Routing, and forwarding foundations
• IPv4, IPv6, multicast, QoS, timing, and infrastructure services
• Device access, configuration, commit model, rollback, and validation
• High availability, redundancy, and control-plane resiliency
• Service provider topology and platform exercise

Practical Outcome

Learners complete the lesson with a clear understanding of the workflow, the ability to validate the expected result, and a structured approach to common troubleshooting tasks.