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Channel Posts
🚀 New Lecture Completed — Introduction to SR Policy
I’m excited to announce that I’ve finished recording another lecture for my Segment Routing over IPv6 (SRv6) Master Class:
🔥 Introduction to SR Policy
In this lecture, we build the foundation needed to understand SRv6 Traffic Engineering and SR Policies, step by step.
Topics covered:
✅ Normal IGP Forwarding vs. Traffic Engineering
✅ SR Policy Fundamentals
✅ Headend and Endpoint
✅ Color and SR Policy Identification
✅ SR Policy Structure
✅ SRv6 Segment Lists
✅ SR Policy vs. IGP Shortest Path
✅ IPv6 Underlay Reachability with SR Policy
✅ SR Policy Creation vs. Traffic Steering
✅ Candidate Paths Overview
✅ Local and Dynamic SR Policy Information
✅ SR-MPLS vs. SRv6 Policies
This lecture prepares us for the next stage: building, configuring, and verifying SRv6 Policies on Cisco IOS XR.
Step by step, we are moving from SRv6 fundamentals to real Traffic Engineering. 🚀 #srv6
| 2 |  🎉 Section 8 Completed — CCNP SPCOR 350-501 MEGA COURSE!
I’m excited to announce that I’ve finished recording the final IS-IS video lecture, which means Section 8 of my CCNP SPCOR 350-501 MEGA COURSE is now complete! 🚀
🔥 IS-IS Operations and Troubleshooting Lab
In this final hands-on lecture, we bring everything together with real configuration, verification, and troubleshooting scenarios:
✅ Hierarchical L1/L2 Troubleshooting Topology
✅ CLNS and IS-IS Operational Verification
✅ IS-IS Hostname and Instance Verification
✅ DIS Priority Configuration and Verification
✅ Broadcast-to-Point-to-Point Configuration
✅ IS-IS Interface Metric Configuration
✅ Area and Level Mismatch Troubleshooting
✅ Network-Type and MTU Troubleshooting
✅ Authentication Troubleshooting
✅ Missing Routes and L1/L2 Reachability Troubleshooting
✅ IS-IS Troubleshooting Commands and Workflow
With this lecture completed, the IS-IS journey and Section 8 are officially finished. | 257 |
| 3 | 🎉 New Lecture Recording Completed — Advanced IS-IS Features and Practical Lab
I’ve just finished recording another lecture for my CCNP SPCOR 350-501 course:
🔥 Advanced IS-IS Features and Practical Lab
In this lecture, we move beyond basic IS-IS operation and explore several important advanced features through both explanation and hands-on verification.
Topics covered:
✅ IS-IS Overload Bit Fundamentals
✅ Overload Bit Configuration and Verification
✅ IS-IS Authentication Fundamentals
✅ Hello (IIH) Authentication
✅ LSP Authentication
✅ Authentication on Cisco IOS and IOS XR
✅ Attached Bit (ATT Bit)
✅ Level-1 Default Route Behavior
✅ Explicit Default Route Origination
✅ Advanced IS-IS Verification and Troubleshooting
Step by step, the CCNP SPCOR 350-501 course is becoming a complete Service Provider routing journey , from fundamentals to advanced configuration and troubleshooting. 🚀
More lectures are coming soon! #ccnpspcor | 331 |
| 4 | 🎉 New Lecture Recording Completed!
I’m happy to announce that I’ve finished recording another practical lecture for my CCNP SPCOR 350-501 Mega Course:
🔹 IS-IS Configuration and Verification Lab
In this hands-on lecture, we build and verify an IS-IS network using both Cisco IOS and Cisco IOS XR, covering:
✅ Lab Topology and IP Addressing
✅ IS-IS Configuration on IOS and IOS XR
✅ NET and Level Configuration
✅ Wide Metrics
✅ IPv4 and IPv6 IS-IS Configuration
✅ Neighbor and LSDB Verification
✅ Route and Topology Verification
✅ End-to-End Connectivity Testing
The goal of this lecture is to move from IS-IS theory to real configuration, verification, and testing, helping students understand how IS-IS operates in a practical service provider environment.
🚀 Another step forward in building the CCNP SPCOR 350-501 Mega Course! #ccnpspcor | 344 |
| 5 | 🚀 Recording Completed — IS-IS IPv4/IPv6 Single Topology and Multitopology
I’m happy to announce that I have finished recording another lecture for my CCNP Service Provider SPCOR 350-501 Mega Course:
IS-IS IPv4/IPv6 Single Topology and Multitopology
Topics covered:
✅ IS-IS Support for IPv4 and IPv6
✅ IPv6 IS-IS TLVs 232, 236, and 237
✅ Single-Topology Operation
✅ Topology Congruence and IPv6 Forwarding Issues
✅ Multitopology Operation
✅ Single Topology vs. Multitopology
✅ Cisco IOS and IOS XR Default Modes
✅ Changing the IPv6 Topology Mode
✅ Transition Between Topology Modes
✅ Verification and Troubleshooting
📘 I’m also sharing the lecture PDF for your reference and review.
Another important step completed in building the CCNP SPCOR 350-501 Mega Course! 🚀#ccnpspcor | 381 |
| 6 | 🚀 Recording Completed — IS-IS Metrics and Path Selection
I’m happy to announce that I have finished recording another lecture for my CCNP Service Provider SPCOR 350-501 Mega Course:
IS-IS Metrics and Path Selection
Topics covered:
✅ IS-IS Metrics and Path Selection
✅ Default Interface Metric
✅ Metrics and Interface Bandwidth
✅ Metric Design and Traffic Path Control
✅ Narrow Metrics and Their Limitations
✅ Wide Metrics
✅ Narrow and Wide Metric Compatibility
✅ Transition Mode for Metric Migration
✅ Level-1 and Level-2 Metric Configuration
✅ Metric Verification and Troubleshooting
📘 I’m also sharing the lecture PDF for your reference and review.
Another important lecture completed as I continue building the CCNP SPCOR 350-501 Mega Course! 🚀 #ccnpspcor | 380 |
| 7 | 🚀 Recording Completed — IS-IS Neighbor Adjacencies and Network Types
I’m happy to announce that I have finished recording another lecture for my CCNP Service Provider SPCOR 350-501 course:
IS-IS Neighbor Adjacencies and Network Types
Topics covered:
✅ IS-IS Neighbor Discovery and IIH Packets
✅ IS-IS Adjacency States
✅ Broadcast and Point-to-Point Networks
✅ DIS Election and Behavior
✅ IS-IS Pseudonode
✅ CSNP and PSNP Database Synchronization
✅ Point-to-Point Adjacency Operation
✅ Network-Type Mismatch
✅ MTU and IS-IS Adjacencies
✅ Neighbor Verification and Troubleshooting
📘 I’m also sharing the lecture PDF for your reference and review.
Another step forward in building the CCNP SPCOR 350-501 course! 🚀 #ccnpspcor | 400 |
| 8 | 🚀 Recording Completed — IS-IS Levels, Areas, and Route Advertisement
I’m happy to announce that I have finished recording another lecture for my CCNP Service Provider SPCOR 350-501 course:
IS-IS Levels, Areas, and Route Advertisement
Topics covered:
✅ IS-IS Hierarchical Design
✅ Level-1 and Level-2 Routing
✅ Level-1-2 Routers
✅ IS-IS Areas vs. Levels
✅ Level-1 and Level-2 Adjacency Rules
✅ Level-2 Backbone Contiguity
✅ Route Advertisement Between Levels
✅ Attached Bit and Level-1 Default Route
✅ Explicit Default Route Advertisement
📘 I’m also sharing the lecture PDF for your reference and review.
Another important step forward in building the CCNP SPCOR 350-501 course! 🚀#ccnpspcor | 416 |
| 9 | 🚀 Recording Completed — IS-IS Fundamentals, Architecture, and NET Addressing
I’m happy to announce that I have finished recording another lecture for my CCNP Service Provider SPCOR 350-501 course:
IS-IS Fundamentals, Architecture, and NET Addressing
Topics covered:
✅ Introduction to IS-IS
✅ IS-IS as a Link-State Routing Protocol
✅ Link-State Database and SPF Algorithm
✅ IS-IS Hierarchical Design
✅ Why IS-IS Is Used in Service Provider Networks
✅ IS-IS TLV Architecture
✅ IS-IS, CLNS, and Layer 2 Operation
✅ Understanding NET Addressing
✅ AFI, Area ID, System ID, and NSEL
✅ IS-IS Support for IPv4 and IPv6
📘 I’m also sharing the lecture PDF for your reference and review.
Another important step forward in building the CCNP SPCOR 350-501 course! 🚀 #ccnpspcor | 463 |
| 10 |  🚀 SRv6 Master Class — Progress Update
Another major milestone completed! We have now finished SRv6 Fundamentals, Network Programming, IGP Control Plane, and our first Cisco IOS XR SRv6 labs. ✅
Next, we move into one of the most exciting parts of the course:
🔥 SRv6 Traffic Engineering
Step by step, from fundamentals to real-world SRv6 implementation. 💻🚀 | 443 |
| 11 |  🚀 SRv6 Master Class — Progress Update
Another major milestone completed! We have now finished SRv6 Fundamentals, Network Programming, IGP Control Plane, and our first Cisco IOS XR SRv6 labs. ✅
Next, we move into one of the most exciting parts of the course:
🔥 SRv6 Traffic Engineering
Step by step, from fundamentals to real-world SRv6 implementation. 💻🚀 #srv6 | 1 |
| 12 | 🚀 Recording Completed — Verifying SRv6 SIDs and the Control Plane
I’m happy to announce that I have finished recording another practical lecture for my SRv6 Master Class:
Verifying SRv6 SIDs and the Control Plane
In this lecture, we verify how SRv6 SIDs, Locators, endpoint behaviors, and the IS-IS control plane work together on Cisco IOS XR.
Topics covered:
✅ SRv6 SID Verification
✅ Local SIDs and Endpoint Behaviors
✅ Supported Behaviors vs. Allocated SIDs
✅ Locator and SID Relationship
✅ SRv6 Locators in the IS-IS LSDB
✅ Locator Advertisement Verification
✅ Remote Locator Reachability
✅ Transit vs. Endpoint Processing
✅ SRv6 Control-Plane Verification Workflow
📘 Practice File Included
I’m also providing Practice File 3, so you can perform the same verification yourself, analyze the outputs, and strengthen your understanding through hands-on practice.
Don’t just watch the lab — build and verify it yourself! 💻🔥
The SRv6 control plane is now verified. ✅
➡️ Next Step: Our First End-to-End SRv6 Packet | 455 |
| 13 | 🚀 Recording Completed — Verifying SRv6 SIDs and the Control Plane
I’m happy to announce that I have finished recording another practical lecture for my SRv6 Master Class:
Verifying SRv6 SIDs and the Control Plane
In this lecture, we verify how SRv6 SIDs, Locators, endpoint behaviors, and the IS-IS control plane work together on Cisco IOS XR.
Topics covered:
✅ SRv6 SID Verification
✅ Local SIDs and Endpoint Behaviors
✅ Supported Behaviors vs. Allocated SIDs
✅ Locator and SID Relationship
✅ SRv6 Locators in the IS-IS LSDB
✅ Locator Advertisement Verification
✅ Remote Locator Reachability
✅ Transit vs. Endpoint Processing
✅ SRv6 Control-Plane Verification Workflow
📘 Practice File Included
I’m also providing Practice File 3, so you can perform the same verification yourself, analyze the outputs, and strengthen your understanding through hands-on practice.
Don’t just watch the lab — build and verify it yourself! 💻🔥
The SRv6 control plane is now verified. ✅
➡️ Next Step: Our First End-to-End SRv6 Packet 🚀 #srv6 | 1 |
| 14 | 🚀 Recording Completed — Configuring SRv6 Locators on Cisco IOS XR
I’m happy to announce that I have finished recording another practical lecture for my SRv6 Master Class:
Configuring SRv6 Locators on Cisco IOS XR
In this lecture, we configure and verify SRv6 Locators and integrate them with IS-IS.
Topics covered:
✅ SRv6 Locator Configuration
✅ Full-Length /64 Locators
✅ SRv6 Locator & Manager Verification
✅ IS-IS Integration
✅ SRv6 Locator Advertisement
✅ Remote Locator Reachability
✅ Control-Plane Verification
✅ Basic Troubleshooting
📘 Practice File Included
Build the lab yourself, verify the results, and troubleshoot the network.
Don’t just watch the lab — build it yourself! 💻🔥
The SRv6 Locators are now operational. ✅
➡️ Next Step: Verifying SRv6 SIDs and the Control Plane 🚀
#srv6 | 446 |
| 15 | I strongly recommend building the lab yourself, following the practice file, changing configurations, verifying the results, and troubleshooting any problems you encounter.
Don’t just watch the lab , build it yourself! 💻🔥
The IPv6 underlay is now ready. ✅
➡️ Next Step: Configuring SRv6 Locators on Cisco IOS XR 🚀
#srv6 | 446 |
| 16 | 🚀 Recording Completed — Configuring the SRv6 IPv6 Underlay
I’m happy to announce that I have finished recording another practical lecture for my SRv6 Master Class:
Configuring the SRv6 IPv6 Underlay
In this lecture, we build and verify the complete IPv6 underlay step by step using Cisco IOS XR and IS-IS.
Topics covered:
✅ IOS XR IPv6 Interface Configuration
✅ Loopback Interface Configuration
✅ Direct IPv6 Connectivity Verification
✅ IS-IS Configuration on IOS XR
✅ IS-IS IPv6 Address Family
✅ Point-to-Point and Passive Interfaces
✅ IS-IS Neighbor Verification
✅ IPv6 Routing Table Verification
✅ IS-IS Learned IPv6 Routes
✅ End-to-End IPv6 Connectivity
✅ Basic Underlay Troubleshooting
📘 Practice File Included
Each practical lecture includes an attached Practice File to help you practice the same features and configurations that I implement in the scenario. | 472 |
| 17 | 🚀 Segment Routing over IPv6 (SRv6) Master Class – New Lecture Completed!
I’m excited to announce that I’ve just finished recording the next lecture of my Segment Routing over IPv6 (SRv6) Master Class! 🎉
🔧 Building Our Cisco SRv6 Lab
In this lecture, we prepare the complete lab environment that we will use for our upcoming hands-on SRv6 configuration and verification on Cisco IOS XR.
📚 Topics Covered:
Cisco IOS XR SRv6 Lab Environment
Four-Router SRv6 Topology
Physical Interface Connections
IPv6 Link Addressing
Loopback Addressing
IS-IS NET Addressing
SRv6 Locator Planning
Loopback vs. SRv6 Locator
Lab Addressing Conventions
Lab Configuration and Verification Strategy
✅ With the fundamentals and control-plane concepts behind us, we are now moving into the practical part of the course.
🔥 Next, we start configuring our SRv6 network on Cisco IOS XR, step by step!
The SRv6 Master Class continues! 🚀 | 489 |
| 18 | 🔥 The recording of the CCNP SPCOR 350-501 Mega Course continues step by step. More lectures, labs, quizzes, and practical content are on the way! | 482 |
| 19 | 🚀 CCNP SPCOR 350-501 Mega Course – New Lecture Completed!
I’m excited to announce that I’ve just finished recording my next lecture for the CCNP Service Provider Core (SPCOR 350-501) Mega Course! 🎉
🎯 Prefix Lists and Prefix Sets
This detailed lecture covers:
Prefix List Fundamentals
High-Order Bit Pattern and Bit Count
Prefix Length Matching
ge and le Matching Logic
Binary Prefix Matching
Prefix List Processing Order
Sequence Numbers
Permit and Deny Entries
IOS and IOS XR Prefix List Syntax
RFC1918 Prefix List Example
IOS XR Prefix Sets
IPv4 and IPv6 Prefix Sets
ge, le, and eq in Prefix Sets
Prefix Set Parser Validation
Using Prefix Sets with RPL
✅ From understanding the fundamental prefix-matching logic to working with IOS XR Prefix Sets and RPL, this lecture combines theory, configuration, and practical examples.
📘 I’m also sharing the first part of the lecture PDF here, covering approximately the first half of the complete lecture, so you can get an early look at the material. | 525 |
| 20 | 🚀 SRv6 Master Class – Progress Update!
I’m excited to announce that the first 3 sections, including 13 lectures, of my Segment Routing over IPv6 (SRv6) Master Class are now complete! ✅
We’ve progressed from SRv6 fundamentals and network programming to building the SRv6 control plane with IS-IS and OSPFv3.
🔥 Next: Section 4 — Hands-on SRv6 implementation and labs on Cisco IOS XR! | 492 |
