ArashDeljoo

📌 Covered in this lecture: 1️⃣ Introduction to Cisco IOS XR 2️⃣ IOS XR Architecture, Multitasking, and Memory Management 3️⃣ IOS XR Software Packages: PIEs and SMUs 4️⃣ Adding, Activating, Committing, and Removing Packages 5️⃣ IOS XR EXEC Mode 6️⃣ Evolution of IOS XR: Classic XR, Virtualized XR, Evolved XR, and XR LNT 7️⃣ IOS XR Two-Stage Commit Model 8️⃣ Commit History, Change IDs, and Labels 9️⃣ Configuration Rollback and commit replace 🔟 Commit Confirmation and Automatic Reversion 1️⃣1️⃣ Hierarchical CLI and Navigation 1️⃣2️⃣ Configuration Validation and show configuration failed 1️⃣3️⃣ Task Groups and Authorization 1️⃣4️⃣ Managing Uncommitted Changes with abort and clear 1️⃣5️⃣ Using the do Command and IOS XR Timestamps 📄 Because the content is extensive, Part A of the lecture PDF has been published here, with the remaining material organized separately. ✅ With this lecture completed, the Cisco Network Operating Systems and Software Architecture chapter is now finished. 🚀 Moving forward with the next chapter of the CCNP SPCOR 350-501 Mega Course. #ccnpspcore

🎬 NEW LECTURE RECORDED & COMPLETED! ✅ 🎓 Course: CCNP SPCOR 350-501 Mega Course 📚 Lecture: Cisco IOS XR Fundamentals and Configuration Management 🔗 Course Status: Under Construction I’ve completed the next lecture of my CCNP SPCOR 350-501 Mega Course, covering Cisco IOS XR from its fundamental architecture to software packages and configuration management.

🚀 SRv6 Course Update — Section 2 Has Started! I’m excited to announce that I’ve officially started Section 2 — SRv6 Network Programming of my upcoming Segment Routing over IPv6 (SRv6) course. The first video of this section has just been recorded: 🎥 SRv6 Network Programming ⏱️ Duration: 19:30 In this lecture, I explained: 1-Introduction to SRv6 Network Programming 2-SRv6 SIDs and Endpoint Behaviors 3-Local SID Table and Behavior Execution 4-Introduction to End and End.X 5-Service Behaviors: End.DX4, End.DX6, End.DT4, and End.DT6 6-Transit Node vs SRv6 Endpoint Processing 7-Locator, Function, and Behavior Relationship 📄 I’m sharing the lecture PDF here as well. Section 2 has officially begun! 🔥 And now a question for you: Can you guess what the next SRv6 video will be about? #SRv6

🎉 New Video Recorded — IPv4 Multicast MAC Address Mapping I’m happy to announce that I’ve just finished recording another video for my IP Multicast course: 🎥 IPv4 Multicast MAC Address Mapping In this lecture, I explain step by step how an IPv4 multicast address is mapped to an Ethernet multicast MAC address, including practical conversion examples and the important 32-to-1 mapping ambiguity. Topics covered: 1-IPv4 Multicast MAC Address Mapping 2-Reserved Multicast MAC Address Range 3-IPv4 Class D Multicast Address Bits 4-Mapping the Lower 23 Bits to the MAC Address 5-Multicast IP-to-MAC Conversion Examples 6- 32-to-1 Multicast Mapping Ambiguity 7-How Switches and Hosts Use Multicast MAC Addresses Another important multicast topic completed! 🚀 🔗 Course Link: https://lnkd.in/ekKnx4bc More IP Multicast lectures are coming soon. #multicast

I’m glad to announce that I’ve just recorded another video for my upcoming Segment Routing over IPv6 (SRv6) course: 🎥 Lecture 5 — SRv6 Packet Forwarding Step by Step In this lecture, I explained: SRv6 Packet Forwarding Process Headend Router and Segment List Creation Active SID and IPv6 Destination Address Segments Left and SID Processing SRv6 Endpoint Processing Transit Router vs SRv6 Endpoint Complete SRv6 Packet Walk I’m also happy to say that with this lecture, the first session of the SRv6 course is now complete! 🎉 The first session includes: 📘 Lecture 1 — Introduction to Segment Routing over IPv6 (SRv6) 📘 Lecture 2 — Understanding SRv6 SIDs, Locators, Functions, and Arguments 📘 Lecture 3 — SRv6 SID Structure and Address Planning 📘 Lecture 4 — Understanding the Segment Routing Header (SRH) 📘 Lecture 5 — SRv6 Packet Forwarding Step by Step The SRv6 journey continues! 🚀 #srv6

🎬 NEW LECTURE RECORDED & ADDED TO THE COURSE! ✅ 🎓 Course: IP Multicast 📚 Lecture: The History and Development of IP Multicast ✅ Status: Recorded and Added to the Course 📌 Covered in this lecture: 1️⃣ The Birth of IP Multicast 2️⃣ The Multicast Backbone (MBone) 3️⃣ Native Internet Multicast 4️⃣ Multicast in Private Networks and Tunneling 5️⃣ IPv6 Multicast 6️⃣ Multicast Development and Standardization 7️⃣ IETF and IEEE Roles in Networking Standards 🚀 Another lecture completed and now available in the IP Multicast course! 🔗 Course Link: https://lnkd.in/ekKnx4bc #multicast

🎬 NEW LECTURE RECORDED! ✅ 🎓 Course: CCNP SPCOR 350-501 Mega Course 📚 Lecture: Cisco IOS XE Fundamentals and CLI Operation 🔗 Course Link: Not Published Yet 📌 Covered in this lecture: 1️⃣ Introduction to Cisco IOS XE 2️⃣ IOS XE Internal Architecture 3️⃣ Linux Kernel and Process Separation 4️⃣ Virtual Memory and 64-Bit Architecture 5️⃣ IOS XE CLI Modes 6️⃣ User EXEC and Privileged EXEC Modes 7️⃣ Global Configuration Mode 8️⃣ Immediate Configuration Changes 9️⃣ Why copy startup-config running-config Is Not a Full Rollback 🔟 Configuration Archive and Replace 1️⃣1️⃣ Configuration Revert Timer 1️⃣2️⃣ IOS XE Configuration Recovery and Best Practices 🚀 Another lecture completed for the CCNP SPCOR 350-501 Mega Course. More coming soon! #ccnpspcore

🎬 ANOTHER SRv6 LECTURE RECORDED! 🚀🔥 I’m very happy to have finished recording the next lecture for my upcoming Segment Routing over IPv6 (SRv6) Course! ✅ This is an important step in our SRv6 journey. After learning about SRv6 SIDs and SID structure, we now move inside the IPv6 packet and explore the Segment Routing Header (SRH). 📌 Topics Covered: 1️⃣ IPv6 Extension Headers and the SRH 2️⃣ Segment Routing Header (Routing Header Type 4) 3️⃣ SRH Fields and Segment List 4️⃣ Last Entry and Segments Left 5️⃣ Active SID and IPv6 Destination Address 6️⃣ SRH Segment Processing 7️⃣ Transit Routers vs. SRv6 Endpoint Nodes 8️⃣ SRH Optional Fields and TLVs 9️⃣ When the SRH Is Required Another important piece of the SRv6 puzzle is complete! Step by step, we’re getting closer to understanding how SRv6 really works in the network. #srv6

🎬 NEW VIDEO ADDED! ✅ 🎓 Course: IP Multicast 📚 New Lecture: Important Multicast Groups and Group Considerations 📌 Covered in this lecture: 1️⃣ Important IPv4 Multicast Groups 2️⃣ IANA Multicast Address Assignments 3️⃣ IPv4 Local Network Control Block 4️⃣ Link-Local Multicast and TTL 5️⃣ Important Link-Local Multicast Addresses 6️⃣ Routing Protocol Multicast Groups 7️⃣ IPv4 Inter-Network Control Block 8️⃣ Local Control vs. Inter-Network Control 9️⃣ Cisco Auto-RP Multicast Groups 🔟 Multicast for Infrastructure Protocol Communication 🔗 Course Link: https://lnkd.in/ekKnx4bc 🚀 The new lecture is now available in the course. Enjoy learning!

🎬 NEW LECTURE RECORDED! ✅ 🎓 Course: CCNP SPCOR 350-501 Mega Course 📚 Lecture: Cisco Network Operating Systems and Software Architectures 🔗 Course Link: Not Published Yet 📌 Covered in this lecture: 1️⃣ Introduction to Network Operating Systems (NOS) 2️⃣ Evolution of Cisco Network Operating Systems 3️⃣ Original Cisco IOS Architecture 4️⃣ Monolithic Kernel Architecture 5️⃣ Run-to-Completion Scheduler 6️⃣ Context Switching and Runaway Processes 7️⃣ IOS Flat Memory Architecture 8️⃣ Memory Protection and System Stability 9️⃣ Why Cisco IOS Architecture Needed to Evolve 🔟 Evolution Toward IOS XE and IOS XR 🚀 Another lecture completed for the CCNP SPCOR 350-501 Mega Course. More coming soon!

🎬 Another SRv6 Lecture Recorded! 🚀 I’m really happy to have finished recording another lecture for my upcoming Segment Routing over IPv6 (SRv6) Course! ✅ This time, I focused on SRv6 SID Structure and Address Planning, one of the key foundations we need before moving deeper into SRv6. 📚 Topics covered: 1️⃣ SRv6 SID Structure and LOC:FUNCT 2️⃣ Locator Block and Locator Node 3️⃣ SID Structure and Bit Lengths 4️⃣ SRv6 Locators, Functions, and Routing Scalability 5️⃣ SRv6 SID Allocation and Address Planning 6️⃣ Preparing for the Segment Routing Header (SRH) 📄 I’m also sharing the PDF of this lecture with you. I’m really enjoying building this course step by step and going deeper into SRv6 with each new lecture. There is still a lot to cover, but another important piece is now completed! 🚀 Next, we move into the Segment Routing Header (SRH)! The course is still under development and not published yet. More coming soon! 🔥

🎬 NEW VIDEO ADDED! ✅ 🎓 Course: IP Multicast 📚 New Lecture: IPv4 Layer 3 Multicast Addressing and Group Assignments 📌 Covered in this lecture: 1️⃣ IPv4 Multicast Group Addressing 2️⃣ IPv4 Classful Addressing and Class D 3️⃣ RFC 5771 and Multicast Address Assignments 4️⃣ Local and Internetwork Control Blocks 5️⃣ AD-HOC and SDP/SAP Blocks 6️⃣ Source-Specific Multicast (SSM) 7️⃣ GLOP Multicast Addressing 8️⃣ Administratively Scoped Multicast Addresses 9️⃣ IPv4 Multicast Address Assignment Table 🔗 Course Link: https://lnkd.in/ekKnx4bc 🚀 The new lecture is now available in the course. Enjoy learning!

🎬 NEW LECTURE RECORDED! ✅ 🎓 Course: Segment Routing over IPv6 (SRv6) 📚 Lecture 2: SRv6 Segment Identifiers (SIDs) and Locators 🔗 Course Status: Not Published Yet 📄 Lecture PDF: Shared 📌 Covered in this lecture: 1️⃣ Understanding SRv6 Segment Identifiers (SIDs) 2️⃣ SRv6 SID Structure 3️⃣ Understanding SRv6 Locators 4️⃣ Locator, Function, and Arguments 5️⃣ SRv6 SID Allocation 6️⃣ Basic SRv6 SID Examples 7️⃣ How Routers Use SRv6 SIDs 8️⃣ SRv6 SIDs and IPv6 Routing 🚀 Lecture 2 completed! The course is still under development, but I’m sharing the lecture PDF with you.

🎬 NEW LECTURE PUBLISHED! ✅ 🎓 Course: IP Multicast Fundamentals 📚 Lecture: Layer 3 Multicast and Group Communication 🔗 Course Link: https://lnkd.in/ekKnx4bc 📌 Covered in this lecture: 1️⃣ Layer 3 Multicast and the TCP/IP Protocol Stack 2️⃣ IETF, RFCs, and IANA in Multicast 3️⃣ Unicast, Broadcast, and Multicast Communication 4️⃣ Packet Replication and Broadcast Forwarding 5️⃣ All-Hosts and Directed Broadcasts 6️⃣ Multicast Group Membership and Group Addresses 7️⃣ Multicast Across Multiple Network Segments 🚀 Another lecture is now live! Enjoy learning, and more multicast content is coming soon.

This is just the beginning. We’ll move from SRv6 fundamentals to practical Cisco configuration, verification, and real lab scenarios. 🚀 The SRv6 journey has officially started!