ArashDeljoo

🎥 New Recording Completed - CCNP SPCOR 350-501 v1.1 Mega Course The next OSPF lecture is now recorded: OSPF NSSA and Totally NSSA Areas 1- NSSA Concept 2- Type 7 LSA Introduction 3- Type 7-to-Type 5 Translation 4- N1 and N2 Routes 5- NSSA Configuration 6- NSSA Verification 7- NSSA Default Route 8- Totally NSSA Configuration 9- Totally NSSA Verification In addition to quizzes, this Mega Course includes many hands-on practice activities throughout the configuration lectures, helping students reinforce the concepts through practical implementation. Step by step, the OSPF chapter is getting closer to completion. 🚀 #ccnpspcor

✅ Another lecture completed for my CCNP SPCOR 350-501 v1.1 Mega Course! This time, I covered: OSPF Stub and Totally Stubby Areas 1-Why OSPF Stub Areas Are Used 2-Stub Area LSA Behavior 3-Automatic Default Route from the ABR 4-Stub Area Configuration on IOS and IOS XR 5-Stub Area Verification and Area-Type Matching 6-Stub Area Restrictions 7-Totally Stubby Area and no-summary Behavior 8-Totally Stubby Configuration and Verification 9-Default Route Cost The lecture includes both the theory and practical configuration on Cisco IOS and IOS XR, with verification of the expected routing and LSA behavior. Step by step, the OSPF chapter is getting closer to completion. 🚀 #ccnpspcor

🎥 New Recording Completed – Unified MPLS & Seamless MPLS Master Class I have finished recording the next lecture: Traditional MPLS Network Architecture Review In this lecture, I cover: 1- Provider Edge and Provider Routers 2- The Role of the IGP 3- The Role of LDP 4- Traditional End-to-End LSP 5- MPLS Label Forwarding 6- MP-BGP and VPN Services 7- The Traditional MPLS Label Stack 8- Why Traditional MPLS Works Well 9- What Changes in Unified MPLS 10- Traditional MPLS vs Unified MPLS This lecture builds the foundation needed to understand why Unified MPLS is introduced and how it changes the traditional MPLS architecture. #unifiedmpls

🎥 New Recording Completed - Unified MPLS & Seamless MPLS Master Class I have finished recording the first lecture: Unified MPLS Course Introduction In this lecture, I cover: 1- Purpose of Unified MPLS 2- Scalability Problems in Large MPLS Networks 3- Multiple Routing and Label Distribution Domains 4- Local IGP and LDP Operation 5- BGP Labeled Unicast (BGP-LU) 6- Inter-Domain Labeled Reachability 7- PE, P, Boundary Router, and Route Reflector Roles 8- End-to-End MPLS Transport Across Multiple Domains 9- Unified MPLS vs Seamless MPLS 10- Technologies Used in Unified MPLS The course has officially started, and we will build the architecture step by step from the fundamentals to full end-to-end operation. 🚀 #unifiedmpls

🎥 New Recording Completed – CCNP SPCOR 350-501 v1.1 Mega Course I have just finished recording the next OSPF lecture: External Routes, Redistribution, and Routing Policy In this lecture, I cover: 1- Internal and External OSPF Routes 2- Route Redistribution Fundamentals 3- Autonomous System Boundary Router (ASBR) 4- Type 5 AS-External LSAs 5- Type 4 ASBR Summary LSAs 6- External Type 1 (E1) Route Metrics 7- External Type 2 (E2) Route Metrics 8- Comparing OSPF E1 and E2 Routes 9- Routing Policies for Controlling Redistribution 10- Redistributing Static Routes with IOS Route Maps 11- Redistributing Static Routes with IOS XR Route Policies 12- Route Tags, Loop Prevention, Verification, and Troubleshooting Step by step, the CCNP SPCOR 350-501 v1.1 Mega Course is getting closer to completion. 🚀 #ccnpspcor

🚀 New Lecture Added to the CCNP SPCOR 350-501 v1.1 Mega Course OSPF Metrics and Path Selection In this lecture, we explore how OSPF calculates metrics, selects the best path, and handles equal-cost routes across Cisco IOS and IOS XR. Topics covered: ✅ OSPF Metric and Interface Cost ✅ Automatic OSPF Cost Calculation ✅ Reference Bandwidth Configuration ✅ Explicit Interface Cost on IOS and IOS XR ✅ Directional OSPF Costs ✅ Intra-Area and Interarea Metric Calculation ✅ Interface Cost, LSA Metric, and Route Verification ✅ Changing the Local Interface Cost ✅ Changing the ABR’s Advertised Metric ✅ Intra-Area vs Interarea Route Preference ✅ OSPF Metric vs Administrative Distance ✅ Path Selection and Equal-Cost Multipath (ECMP) This lecture is part of the ongoing CCNP SPCOR 350-501 v1.1 Mega Course and continues our detailed coverage of OSPF for the Service Provider core exam. More lectures are coming as we continue building the course. 🚀 #ccnpspcor

✅ New Lecture Completed - CCNP SPCOR 350-501 Mega Course v1.1 I’ve just finished recording the next lecture in the CCNP SPCOR 350-501 Mega Course v1.1: Multiarea OSPF and Route Advertisement In this lecture, we cover: Lab Topology and Objectives Why OSPF Uses Multiple Areas Area 0 and Backbone Operation ABR Operation and Separate Area Databases Intra-Area and Interarea Routes Advertising Networks Within an Area Type 3 Interarea Advertisement by the ABR Interarea Route and Cost Calculation Advertising an Additional Loopback on IOS XR End-to-End Advertisement and Connectivity Verification Troubleshooting Missing Interarea Routes This lecture explains how OSPF information moves between areas, how ABRs generate Type 3 LSAs, and how routers calculate and verify interarea reachability in a practical service provider lab. More OSPF lectures are coming as I continue building the complete CCNP SPCOR 350-501 v1.1 Mega Course. 🚀 #ccnpspcor

🚀 Another lecture is recorded for my CCNP SPCOR 350-501 (v1.1) Mega Course! In “OSPF LSAs and the Link-State Database,” I explain how OSPF describes the network, exchanges routing information, and uses the LSDB to calculate routes. Here’s what I covered: 1- From Neighbor Adjacency to Network Knowledge 2- Link-State Advertisement Fundamentals 3- LSAs versus OSPF Packet Types 4- Link-State Database Fundamentals 5- Understanding the LSA Header 6- Type 1 Router LSA 7- Type 2 Network LSA 8- Type 3 Summary LSA 9- ASBRs and Type 4 ASBR-Summary LSAs 10- Type 5 AS-External LSA 11- Type 7 NSSA External LSA 12- LSA Flooding, Freshness, and Aging 13- From the LSDB to the Routing Table 14- Database Verification and Troubleshooting on IOS and IOS XR 📄 A practice exercise accompanies this lecture to help students explore the LSDB and verify their understanding. 🚀 More course updates are coming soon. Stay tuned! #ccnpspcor

🚀 Another lecture is recorded for my CCNP/CCIE SPCOR 350-501 Mega Course! In “OSPF Timers, Authentication, and Neighbor Stability,” I explain how OSPF maintains and protects neighbor relationships, with practical configuration and troubleshooting on Cisco IOS and IOS XR. Here’s what I covered: 1- Introduction and Lab Topology 2- Why OSPF Needs Hello Packets 3- Understanding the Hello Interval 4- Understanding the Dead Interval 5- OSPF Timer Matching Requirements 6- Verifying OSPF Timers 7- Configuring Timers on IOS and IOS XR 8- Troubleshooting a Timer Mismatch 9- Why OSPF Authentication Is Needed 10- OSPFv2 Authentication Methods 11- Configuring MD5 Authentication on IOS 12- Configuring MD5 Authentication on IOS XR 13- Troubleshooting an Authentication Mismatch 14- Neighbor Stability and Flapping 📄 Every configuration lecture also includes a practice exercise to help students apply what they learn. 🚀 More course updates are coming soon. Stay tuned! #ccnpspcor

🚀 Another lecture is recorded for my CCNP/CCIE SPCOR 350-501 Mega Course! In “DR/BDR Elections and OSPF Network Types,” I explain how OSPF organizes neighbor relationships on shared networks, then demonstrate configuration and verification. Here’s what I covered: 1- OSPF DR, BDR, and DROTHER Roles 2- Why Shared Ethernet Networks Need DR/BDR Elections 3- OSPF Neighbor vs Full Adjacency 4- OSPF 2-Way and FULL Neighbor States 5- OSPF DR/BDR Election Rules 6- OSPF Interface Priority and Router ID Tie-Breaking 7- Nonpreemptive DR/BDR Election Behavior 8- OSPF Multicast Addresses 9- OSPF Network Types 10- DR/BDR and Point-to-Point Configuration and Verification 📄 Every configuration lecture in this course also includes a practice exercise to help students apply what they learn. 🚀 More course updates are coming soon. Stay tuned! #ccnpspcor

🚀 Another lecture is recorded for my CCNP/CCIE SPCOR 350-501 Mega Course! In “Configuring OSPFv2 on Cisco IOS XR and IOS,” I walk through a practical lab—from preparing interfaces to verifying multiarea routing and end-to-end connectivity. Here’s what I covered: 1- OSPFv2 Lab Topology and Addressing 2- Preparing Router Interfaces and Loopbacks 3- OSPFv2 Configuration on Cisco IOS XR 4- OSPFv2 Configuration on Cisco IOS 5- Router IDs, Process IDs, and Area Assignment 6- IOS Network Statements and Wildcard Masks 7- Interface-Based OSPF Configuration 8- OSPF Neighbor Adjacency Verification 9- Multiarea OSPF and ABR Operation 10- OSPF Route Verification and End-to-End Connectivity 11- Basic OSPF Configuration Troubleshooting 📄 Every configuration lecture in this course includes a practice exercise for students to apply what they learn. I’m also sharing the practice exercise for this lecture!

🚀 Another lecture is recorded for my CCNP/CCIE SPCOR 350-501 Mega-Course! In “OSPF Packets and Neighbor Adjacency,” I explain how OSPF routers become neighbors, exchange information, and reach the Full state, with practical verification and troubleshooting. Here’s what I explained: 1- OSPF Packets and Neighbor Adjacency Introduction 2- How OSPF Sends Packets 3- The OSPF Hello Packet 4- OSPF Neighbor Compatibility Requirements 5- Down, Attempt, and Init States 6- The 2-Way State 7- The ExStart State 8- The Exchange State and DBD Packets 9- The Loading State, LSRs, and LSUs 10- LSA Acknowledgments and the Full State 11- Interpreting OSPF Neighbor State Output 12- Troubleshooting an OSPF Adjacency Scenario More lectures are on the way! 🚀

🎉 I’m pleased to announce that I have finished recording a new lecture for my upcoming CCNP Service Provider SPCOR 350-501 v1.1 Mega Course: OSPF Fundamentals and Service Provider Design 1- Why Routers Need Dynamic Routing 2- OSPF as an Interior Gateway Protocol in Service Provider Networks 3- Provider Core (P) and Provider Edge (PE) Routers 4- Interface Addresses, Advertised Prefixes, and Routes 5- OSPF as a Link-State Routing Protocol 6- Link-State Advertisements (LSAs) 7- The Link-State Database (LSDB) and SPF Calculation 8- OSPF Areas and the Area 0 Backbone 9- Internal Routers, ABRs, and ASBRs 10- OSPFv2 and OSPFv3 Introduction 11- OSPF Router IDs and Process IDs 12- Reading the OSPF Lab Topology The course is currently under construction and will be published on Udemy. More updates are coming soon! 🚀 #ccnpspcor

🎉 I’m pleased to announce that I have finished recording a new lecture for my upcoming CCNP Service Provider SPCOR 350-501 v1.1 Mega Course: SNMPv2c and SNMPv3 This comprehensive lecture includes: SNMP Introduction Why SNMP Is Still Used SNMP Manager and Agent MIBs and OIDs Get and Response Messages GetNext and GetBulk Set Trap and Inform SNMPv2c and Community Strings SNMPv2c Configuration Example SNMPv3 Security Features SNMPv3 Security Levels Configuring SNMPv3 AuthNoPriv SNMPv3 Verification, AuthPriv, and IOS XR The course is currently under construction and will be published on Udemy. More updates are coming soon! 🚀 #ccnpspcor

New Lecture Completed - CCNP/CCIE SPCOR 350-501 Mega Course (v1.1) I’ve completed a new lecture: Configuring gNMI and Streaming Telemetry on Cisco IOS XR. In this lecture, I demonstrate a successful gNMI connection from Windows to an IOS XR router and explain how to configure and verify dial-out telemetry using TCP or gRPC. I also cover the configuration requirements for TLS, mutual TLS, and certificate-based authentication. The Windows gNMI connection is demonstrated live. The dial-out and certificate examples are explained as configuration walkthroughs to help you understand the corresponding SPCOR v1.1 topics. Happy learning! #ccnpspcor

🚀 Another major lecture is recorded for my CCNP/CCIE SPCOR 350-501 Mega-Course! In “NetFlow and IPFIX Configuration and Verification,” I take you from understanding traffic flows to configuring and troubleshooting flow exports on Cisco IOS and IOS XR. Here’s what I explained: 1- NetFlow and IPFIX Introduction 2- What Is a Traffic Flow? 3- Flow Identification and Collected Information 4- NetFlow Components: Exporter, Collector, and Analyzer 5- NetFlow Use Cases in Service Provider Networks 6- Configuring Traditional NetFlow on Cisco IOS 7- Verifying Traditional NetFlow Exports 8- NetFlow Version 9 and IPFIX 9- IPFIX Information Elements, Templates, and Benefits 10- IOS XR IPFIX Lab Topology and Configuration Plan 11- Configuring the IOS XR Flow Exporter Map 12- Configuring the IOS XR Flow Monitor Map 13- Configuring the IOS XR Sampler Map 14- Applying Flow Monitoring to an Interface 15- Verifying IPFIX Export and Troubleshooting Common Issues More lectures are on the way! #ccnpspcor