@OrhanErgunCCDE Orhan Ergun

Orhan Ergun posts on X about design, the most, network, topics the most. They currently have [------] followers and [---] posts still getting attention that total [-----] engagements in the last [--] hours.

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Social Influence

Social category influence stocks 15% technology brands 12% finance 7% cryptocurrencies 1% countries 1% social networks 1%

Social topic influence design 8%, the most 6%, network 6%, topics 6%, if you 6%, black friday 6%, core 4%, portal 4%, ai 4%, alto #354

Top accounts mentioned or mentioned by @kchimaev @takiadeen @russ @orhanergunnet @rtggeek

Top assets mentioned Alphabet Inc Class A (GOOGL)

Top Social Posts

Top posts by engagements in the last [--] hours

"SD-WAN is one of the most critical technologies now. You should know the different offerings to decide the suitable one for your network. We have multiple SD-WAN Courses on the website and more on the way. We have many Cisco Viptela Palo Alto Versa and Fortinet SDWAN Courses at the moment. Here is the link for all of #sdwan #viptela #fortinet #paloalto #versa https://buff.ly/r0AMDMm https://buff.ly/r0AMDMm"
X Link 2026-02-05T14:45Z 14.2K followers, [---] engagements

"Segment Routing is one of the most commonly deployed transport technologies in the Service Provider networks and comes with many use cases. In this 11+hours of video there is a theory design and many hands-on lab practices for it. Soon SRv6 course will be added to the website. Stay tuned. #segmentrouting #itcourses #networking https://buff.ly/3qgdjCe https://buff.ly/3qgdjCe"
X Link 2026-02-06T10:45Z 14.2K followers, [---] engagements

"One of the important design considerations 👍"
X Link 2026-02-06T14:45Z 14.2K followers, [---] engagements

"👏👌 Dear networking friends: Please stop overcomplicating everything. Networks are already complex enough without our grand desire to wear capes and be superheros. From your [--] year plus CCIE/CCaR/CCDE/MENSA/Ph.D./50 patents/14 books network engineering friend. Dear networking friends: Please stop overcomplicating everything. Networks are already complex enough without our grand desire to wear capes and be superheros. From your [--] year plus CCIE/CCaR/CCDE/MENSA/Ph.D./50 patents/14 books network engineering friend"
X Link 2026-02-07T07:18Z 14.2K followers, [---] engagements

"In the world of Service Provider networks MPLS is everywhere and two of the most important services built on it are Layer [--] VPNs (L2VPN) and Layer [--] VPNs (L3VPN). Lets break it down simply. A Layer [--] VPN extends the customers Layer [--] domain over the providers MPLS core. It is like giving them a long Ethernet cable across cities or countries. The provider doesnt touch the customers IP routing. Used when customers want full control of their routing or run protocols like STP HSRP etc. Common technologies: VPWS (point-to-point) and VPLS (multipoint-to-multipoint). A Layer [--] VPN on the other hand"
X Link 2026-02-09T12:30Z 14.2K followers, [----] engagements

"Lets quickly talk about the Computer Network Architect role. This is not about configuring routers; it is about designing the big-picture network that supports the business. A network architect takes business requirements and constraints like budget performance security and scalability and translates them into a technical design. So instead of asking how to configure BGP they ask should we use BGP or something else why and what are the trade-offs Students ask me 'How is this different from a Network Operations Engineer' Ops engineers keep the network running troubleshooting monitoring"
X Link 2026-02-11T14:45Z 14.2K followers, [---] engagements

"A new course was published today by one of our long-time instructors: Cisco Nexus vPC (Virtual Port Channel): is the cornerstone of modern Layer [--] data center design yet it remains one of the most misunderstood technologies in the industry. This comprehensive 5-hour masterclass is designed to take you from a basic understanding to expert-level mastery of vPC architecture on Cisco Nexus [----] and [----] platforms. #Nexus #Cisco #Datacenter https://buff.ly/X2RFlyc https://buff.ly/X2RFlyc"
X Link 2026-02-12T14:45Z 14.2K followers, [---] engagements

"Happy Valentine's Day techy hearts Lovers and network geeks play your parts From me to you a little fun A nerdy gift for everyone 😉 Only for today here is your Valentine's Day big discount gift: #orhanergun #ccie #ccde #networking https://buff.ly/3IKlLjA https://buff.ly/3IKlLjA"
X Link 2026-02-14T10:45Z 14.2K followers, [---] engagements

"With our Team Training Subscription: you access more than [-----] videos across [--] vendors vendor-neutral and open-source IT courses. It is more than [----] hours and 150000+ pages of Lab and Reading resources. Your employees should have Online Learning platform access; this is [----] not [----]. Happy learning everyone. #IT #Team https://buff.ly/43g3Lpr https://buff.ly/43g3Lpr"
X Link 2026-02-05T12:30Z 14.2K followers, [---] engagements

"Network Security is one of our main focuses on the Orhan Ergun course portal. Many vendor-specific and vendor-agnostic courses help engineers with their certification exams and real-life design and deployment. Cisco Palo Alto Fortinet CheckPoint Mikrotik OPNSense ISACA are the vendors. CCIE Security CCNP Security CISSP CEH PCNSE PCNSA CheckPoint CCSA Fortinet NSE4 and NSE7 are some of the popular courses in the network security category. #orhanergun #networksecurity https://orhanergun.net/it-coursestechnologies=24 https://orhanergun.net/it-coursestechnologies=24"
X Link 2026-02-06T12:30Z 14.2K followers, [----] engagements

"The most commonly used technologies in the Service Provider and the Enterprise networks with the design and theory point of view covered in these courses: come with hundreds of hands-on labs quiz questions and other materials for better understanding. Enjoy learning with OE. #ccie #ccde #cisco https://buff.ly/IZNgb2N https://buff.ly/IZNgb2N"
X Link 2026-02-09T14:45Z 14.2K followers, [---] engagements

"Introduction to IT 😊"
X Link 2026-02-09T17:00Z 14.2K followers, [---] engagements

"With hundreds of courses and more than [-----] videos our website will provide access to the entire library of IT Courses with one of these subscription options: You can subscribe individually or through your company to the Team Subscription: #orhanergun #itcourses #ccie #ccde #cisco #juniper #aws #networking #security #cloud https://buff.ly/43g3Lpr https://buff.ly/3IKlLjA https://buff.ly/43g3Lpr https://buff.ly/3IKlLjA"
X Link 2026-02-10T12:30Z 14.2K followers, [---] engagements

"BGP - Border Gateway Protocol or Bridging Gap Protocol really bridges all the gaps and carries almost anything on top of it. You use it for IP VPN Layer [--] Layer3 Security QoS Multicast Monitoring and any purposes internal in the networks as well as for Interdomain routing and this is a great course covering most of these capabilities/features: #bgp #ccie #ccde https://buff.ly/bLO6Qqu https://buff.ly/bLO6Qqu"
X Link 2026-02-10T14:45Z 14.2K followers, [---] engagements

"It is like comparing apples and oranges but still a common topic: DMVPN vs GETVPN. In Orhan Erguns CCDE course we cover comparison tables like this with real design requirements and constraints. Its not just useful for the exam but also a powerful tool for real-world network engineers. #DMVPN #GETVPN #Cisco #CCIE #CCDE #OrhanErgun https://twitter.com/i/web/status/2021562423908462896 https://twitter.com/i/web/status/2021562423908462896"
X Link 2026-02-11T12:30Z 14.2K followers, [---] engagements

"Guys lets talk about the Clos topology better known as the leaf and spine architecture one of the most important designs in modern data centers. Instead of the old three-tier model Clos gives you a flat scalable design where every leaf switch connects to every spine switch. No leaf-to-leaf no spine-to-spine just a clean non-blocking fabric. Why do we use it Because it handles east-west traffic very well supports ECMP and scales horizontally. Big players like Google and Facebook use it. But even enterprises are adopting it for EVPN-VXLAN and fabric-based networks. Clos and DragonFly are some"
X Link 2026-02-12T12:30Z 14.2K followers, [---] engagements

"CCIE Security v6.1 course which is the latest version of the exam is receiving very good feedback from the students too. Check all the details from this page: and be prepared to the exam well with that. #cisco #ccie #cciesecurity https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu"
X Link 2026-02-14T12:30Z 14.2K followers, [---] engagements

"In traditional MPLS networks managing traffic flows required complex LDP or RSVP-TE configurations which added operational overhead and scalability concerns. But Segment Routing (SR) has changed the game. With SR we eliminate the need for LDP by encoding path information directly in the packet headers. That means: Simplified Traffic Engineering No per-flow state in the core Better Scalability No need to maintain LDP/RSVP sessions across the network. SDN-Ready Architecture SR works seamlessly with a controller-based approach making it perfect for intent-based networking. Seamless Interworking"
X Link 2026-02-14T14:45Z 14.2K followers, [---] engagements

"Palo Alto Networks Certifications Fast Overview Palo Alto is a top vendor in network security known for its next-gen firewalls and threat prevention tools. Their certifications help professionals prove their skills in real-world security environments: PCCET Entry-level cybersecurity PCNSA Admin-level firewall operations PCNSE Advanced configuration and troubleshooting PSE Solution design for partners and engineers These are widely respected in both enterprise and service provider networks. At Orhan Erguns platform: we offer multiple training courses for these certifications delivered by"
X Link 2025-05-22T17:00Z 13.2K followers, [----] engagements

"The underlay is your physical network routers switches IP links just focused on forwarding packets using traditional routing protocols like OSPF or BGP. The overlay is the virtual network built on top of it. Think of VXLAN GRE or IPsec tunnels carrying tenant or app traffic across the underlay. This is where you control segmentation mobility and services. The magic is in the separation You can scale segment and automate the overlay without touching the underlay. That is huge for data centers SD-WAN and Cloud. And from a CCDE: point of view it's all about designing for flexibility scale and"
X Link 2025-05-23T19:19Z 13.2K followers, [----] engagements

"Guys lets talk about BNG Broadband Network Gateway. This is the device in a Service Provider network where broadband users are authenticated and connected to the Internet. It handles things like IP address assignment policy control QoS and integrates with AAA systems. If you are using PPPoE or DHCP to get online you are likely going through a BNG. Traditionally BNGs are centralized at the edge or core but now we are seeing distributed BNG designs especially with fiber networks. That helps lower latency and makes scaling easier. Also many providers are moving toward virtualized BNGs as part of"
X Link 2025-05-25T10:41Z 13.2K followers, [----] engagements

"Lets talk about ODN: Optical Distribution Network. It is the part of a fiber network that connects the service provider to your home or business. At the core of it theres an OLT (Optical Line Terminal). This device sits at the providers central office and sends high-speed data into the fiber network. That data travels through the ODN where it hits something called an optical splitter. The splitter takes that one signal from the OLT and divides it into many sending it out to multiple customers. No power needed at the splitter it is all done with passive fiber optics. We cover ODNs OLTs"
X Link 2025-06-02T08:45Z 13.3K followers, [---] engagements

"Microwave is a way to send data wirelessly using a radio signal not a cable. Many companies use it when fiber is not easy to put in the ground. It is a point-to-point wireless technology basically. If we compare Microwave vs Fiber from some aspects: Speed/Capacity: Fiber can give more bandwidth microwave has lower speed but still okay for many uses. Latency: Microwave has very low latency sometimes better than fiber because the signal goes straight not following the cable path. Cost: Microwave is cheaper than dig and lay fiber especially in hard places like mountains or cities. Microwave is"
X Link 2025-06-08T12:30Z 13.2K followers, [----] engagements

"In Service Provider networks understanding the roles of Core Aggregation and Access layers is critical for designing scalable and high-performance infrastructures. The Access layer is where customer connections begin. This is the first point of entry for broadband enterprise or mobile users. It includes technologies like DSLAMs GPON or even Carrier Ethernet access switches and routers. The main goal here is to provide high availability and scale while keeping costs low. The Aggregation layer collects traffic from multiple access nodes and aggregates it into higher-speed uplinks. It is also"
X Link 2025-06-10T09:23Z 13.3K followers, [----] engagements

"A Tier [--] ISP (Internet Service Provider) is a network that can reach every other network on the Internet without paying anyone for transit. In other words they dont need to buy Internet from anyone; they peer with other Tier 1s and carry traffic everywhere themselves. Tier 1s build and maintain those global backbones massive high-speed networks that connect continents and countries together. Some well-known Tier [--] ISPs today include Level [--] (Lumen) NTT Tata Communications Telia GTT and Cogent. These companies form the core of how the Internet works behind the scenes. If you are sending data"
X Link 2025-06-10T10:45Z 13.3K followers, [----] engagements

"New Course: "Cisco ACI v6: The [----] Definitive Guide to Modern Data Centers": Master the latest advancements in data center networking with our comprehensive nearly 10-hour course on Cisco ACI v6 updated for [----]. Learn to confidently design deploy and troubleshoot modern automated ACI environments leveraging the full power of its cutting-edge features. #ACI #SDN #Cisco #CiscoACI #Networking #OrhanErgun #IT #Courses https://buff.ly/ARLcBHX https://buff.ly/ARLcBHX https://buff.ly/ARLcBHX https://buff.ly/ARLcBHX"
X Link 2025-06-17T13:54Z 13.3K followers, [---] engagements

"A Tier [--] ISP is a service provider that has its own backbone network serves customers directly and also buys IP transit from Tier [--] or other Tier [--] providers to reach parts of the Internet they cant reach through peering. They usually have a national or regional MPLS core operate BGP with upstreams and peers and may have many settlement-free peers at Internet Exchange Points (IXPs). Unlike Tier [--] ISPs they pay for some of their Internet connectivity but they can still be large in size and have complex networks. They are more advanced than Tier [--] ISPs who only rely on upstreams and dont have"
X Link 2025-06-22T08:45Z 13.3K followers, [----] engagements

"A Wireless ISP (WISP) is a service provider that delivers Internet to customers using wireless technologies instead of fiber or cable. WISPs usually install antennas and base stations on towers or buildings. These connect to customer devices like wireless CPE (Customer Premises Equipment) often using licensed or unlicensed radio frequencies such as [---] GHz [--] GHz or even [--] GHz. Most WISPs use point-to-multipoint setups for residential users and point-to-point wireless links for business or backhaul connections. WISPs are very popular in rural areas where fiber is too expensive to deploy. If"
X Link 2025-06-22T10:45Z 13.3K followers, [----] engagements

"With this new ACI v6 from foundational concepts and the core object model to advanced topics like L2/L3 Out configurations Multi-POD/Multi-Site designs VMM integration (including new hypervisor support) and cutting-edge operational efficiencies in ACI v6 we cover it all. You'll gain hands-on experience with the latest GUI understand the nuances of policy enforcement and explore how ACI integrates seamlessly with virtualized environments and external networks. #ACI #Cisco #OrhanErgun #ITCourses #Learning #Education #TeamTraining https://buff.ly/ARLcBHX https://buff.ly/ARLcBHX"
X Link 2025-06-22T12:30Z 13.3K followers, [---] engagements

"Cisco Identity Services Engine (ISE) is a security platform that helps you control who can access your network how and from where. It checks the identity of users and devices before allowing them on the network. You can set rules for example only company laptops can access the internal network or guests can access to Internet only. ISE supports 802.1X MAC authentication web auth and works with many network devices like switches wireless controllers and firewalls. It also does posture checks checking if a device has antivirus or is up to date before giving full access. We cover Cisco ISE"
X Link 2025-07-02T12:30Z 13.5K followers, [----] engagements

"Cisco Experts 😊💪"
X Link 2025-07-10T16:00Z 13.5K followers, [----] engagements

"A Tier [--] ISP (Internet Service Provider) is a company that provides internet access to businesses smaller ISPs and home users. Tier [--] ISPs dont have a global network like Tier 1s. Instead they: Buy internet access (transit) from Tier [--] ISPs Peer (exchange traffic) with other Tier [--] ISPs to reduce costs Serve as a middle layer between Tier [--] ISPs and local customers They are common in regional or national markets and they help connect millions of users to the global internet. If you want to learn more about how Tier [--] ISPs work including peering routing MPLS BGP and more check out our CCIE"
X Link 2025-07-25T09:41Z 13.6K followers, [----] engagements

"New Video: Master the CCIE Lab Without Buying Expensive Equipment 💻🔥 If you are studying for the CCIE Enterprise CCIE SP or CCIE Security exams and you just need for practice that won't cost you much: #CCIE #CCIEEnterprise #CCIESP #OrhanErgun #CCIESecurity https://buff.ly/7oAZ5YZ https://buff.ly/7oAZ5YZ https://buff.ly/7oAZ5YZ https://buff.ly/7oAZ5YZ"
X Link 2025-07-30T14:45Z 13.6K followers, [---] engagements

"In network design you often face a trade-off between latency cost and scalability you cant maximize all three at the same time. Want low latency You might need direct links and high-end devices. But that increases cost. Want to reduce cost You may use cheaper links or devices. But that can increase latency and limit scalability. Want a highly scalable network You may need more complex designs. That can increase cost and sometimes latency too. Good network design is about finding the right balance based on the application business needs and budget. #NetworkDesign #NetworkArchitecture"
X Link 2025-07-31T10:48Z 13.7K followers, [----] engagements

"New Course: Advanced IPsec VPN Architecture with Cisco & Palo Alto: For those who want to learn about multi-vendor VPN deployment Cisco and Pal-Alto together seems an interesting course. #ITCourses #OrhanErgun #Cisco #PaloAlto #VPN https://buff.ly/foiLUIS https://buff.ly/foiLUIS"
X Link 2025-08-06T12:30Z 13.7K followers, [---] engagements

"Congrats champion 👏 #UFC #UFC319 @KChimaev"
X Link 2025-08-17T16:01Z 13.7K followers, [---] engagements

"Palo Alto is one of the many vendors on Orhan Erguns IT Training course portal offering PCNSA PCNSE SD-WAN and many other trainings: Dont spend your weekend without learning #Palalto #SDWAN #PCNSA #PCNSE #OrhanErgun https://buff.ly/QW1odZU https://buff.ly/QW1odZU"
X Link 2025-09-12T18:25Z 13.8K followers, [----] engagements

"Over 95% of international internet traffic moves through submarine cables laid deep under the ocean These cables are only as thick as a garden hose but stretch thousands of kilometers. And yes sharks have tried to bite them but the real threats are ship anchors and fishing nets. In [----] a cable cut near Egypt disrupted internet access for dozens of countries dropping connectivity by over 70% in some regions. You can find more information about the Internet and how it is controlled in this video: #SubmarineCables #Networking #InternetInfrastructure #OrhanErgun #Internet https://buff.ly/iWnSARq"
X Link 2025-09-27T17:20Z 13.8K followers, [----] engagements

"With this new ACI v6 from foundational concepts and the core object model to advanced topics like L2/L3 Out configurations Multi-POD/Multi-Site designs VMM integration (including new hypervisor support) and cutting-edge operational efficiencies in ACI v6 we cover it all. You'll gain hands-on experience with the latest GUI understand the nuances of policy enforcement and explore how ACI integrates seamlessly with virtualized environments and external networks. #ACI #Cisco #OrhanErgun #ITCourses #Learning #Education #TeamTraining https://buff.ly/TxN5G1B https://buff.ly/TxN5G1B"
X Link 2025-10-02T08:45Z 13.8K followers, [---] engagements

"I think one of the most important features in SD-WAN is Application Aware Routing - AAR. With AAR SD-WAN chooses the best path for each application based on real-time metrics like latency jitter and loss not just IP routes. You set SLA thresholds and the SD-WAN fabric automatically routes voice video or cloud traffic over the best available link (MPLS DIA Mobile). No manual tuning. No waiting for convergence. It means better app performance less downtime and efficient link usage. We cover AAR deeply in our CCIE Enterprise Infrastructure course: at for engineers building modern intelligent"
X Link 2025-10-02T14:45Z 13.8K followers, [----] engagements

"New Course: Advanced IPsec VPN Architecture with Cisco & Palo Alto: For those who want to learn about multi-vendor VPN deployment Cisco and Pal-Alto together seems an interesting course. #ITCourses #OrhanErgun #Cisco #PaloAlto #VPN https://buff.ly/8gbxDxd https://buff.ly/8gbxDxd"
X Link 2025-10-04T10:45Z 13.8K followers, [---] engagements

"🚨 Less than [--] days to go Network Design is not a step in building networks. Its the foundation Lets build better networks together #CCDE #NetworkDesign #Cisco #OrhanErgun #Bootcamp https://buff.ly/1FtF0B8 https://buff.ly/1FtF0B8"
X Link 2025-10-05T12:30Z 13.8K followers, [---] engagements

"Perimeter security protects the edge of a network where internal systems meet external networks like the Internet. Intrusion prevention focuses on detecting and blocking threats before they enter the network. Cisco provides some tools for this: FTD (Firepower Threat Defense): Unified firewall VPN and threat protection in one device. FMC (Firepower Management Center): Centralized management for policies monitoring and threat response. In CCIE Security mastering perimeter defenses and intrusion prevention is critical both for the exam and real-world designs. We cover this and all other CCIE"
X Link 2025-10-05T17:00Z 13.8K followers, [---] engagements

"FTD (Firepower Threat Defense) is Ciscos next-generation firewall. It combines ASA firewall features with advanced security tools like: IPS (Intrusion Prevention System) Application control URL filtering Malware protection You dont configure FTD directly from the CLI like older ASA devices. Instead you manage it using FMC (Firepower Management Center) which is a web-based tool where you: Create access and IPS policies Push configurations to FTD devices Monitor traffic and generate reports Update signatures and licenses FMC controls one or more FTDs from a single place which is a nice feature"
X Link 2025-10-08T12:30Z 13.8K followers, [----] engagements

"Palo Alto Networks certifications like PCNSA and PCNSE are essential for anyone working with network security. They prove your ability to configure and manage Palo Alto firewalls a critical skill in todays cybersecurity landscape. Orhan Erguns Palo Alto for learning these skills. They're clear practical and based on real-world scenarios making it easier to understand and apply. If you're looking to get certified and improve your firewall expertise these courses are worth checking out. #PaloAlto #PCNSA #PCNSE #CyberSecurity #Firewall https://buff.ly/3y99vqK https://buff.ly/3y99vqK"
X Link 2025-02-18T08:45Z 12.5K followers, [----] engagements

"Juniper Networks is a major player in routing switching and network securityespecially in service provider and large enterprise environments. Their certification path is clear and respected: JNCIA Entry-level JNCIS Specialist JNCIP Professional JNCIE Expert-level Tracks cover Routing & Switching Security Service Provider Data Center and Cloud all based on Junos OS If you are looking to build serious Juniper skills Orhan Ergun offers a wide range of Juniper courses: from fundamentals to advanced design. Start learning today #Juniper #JuniperNetworks #Networking #OrhanErgun #IT#ITCourses #JunOS"
X Link 2025-07-21T10:45Z 14K followers, [----] engagements

"Some of the vendor-based and open-source network operating systems. Which one you like and what is missing #orhanergun #networking"
X Link 2025-09-29T14:45Z 13.9K followers, [----] engagements

"For many Palo Alto Networks courses you can visit: These courses are prepared to teach you real-life deployment operation and troubleshooting as well as help with the PCNSA PCNSE Panorama and other #PaloAlto exams. #pcnsa #pcnse #panorama https://buff.ly/3y99vqK https://buff.ly/3y99vqK"
X Link 2025-10-10T08:45Z 13.9K followers, [---] engagements

"Every CCIE Security Lab exam topic is covered in our CCIE Security v6.1 Lab exam preparation course: After you finish this course you will be very comfortable with the exam and have a good chance to pass it on your first attempt. #cisco #cciesecurity #ccie https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu"
X Link 2025-10-14T09:50Z 13.9K followers, [----] engagements

"The CCIE Security v6.1 course which is the latest version of the exam is receiving very good feedback from the students too. Check all the details from this page: and be prepared for the exam well with that. #cisco #ccie #cciesecurity https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu"
X Link 2025-10-15T10:45Z 13.9K followers, [---] engagements

"Team Training with a Business/Corporate All-Access Pass subscription offers numerous benefits to IT Employees of companies. For more infotmation and demo: #cisco #aws #fortinet #cloud #networking #ccie #ccde #ccnp https://buff.ly/43g3Lpr https://buff.ly/43g3Lpr"
X Link 2025-10-17T14:45Z 13.9K followers, [---] engagements

"MPLS FRR Link Protection helps traffic recover fast when a link fails usually in under 50ms without waiting for routing protocols like OSPF or IS-IS to reconverge. A few terms in the architecture: PLR (Point of Local Repair) is the router just before the failed link. It detects the failure and instantly sends traffic through a pre-computed backup path. MP (Merge Point) is where that backup path reconnects to the original Label Switched Path (LSP) so traffic continues as if nothing happened. This mechanism keeps voice video and real-time apps running smoothly even during failures. For deep"
X Link 2025-10-21T17:00Z 13.9K followers, [---] engagements

"Those who subscribe to the website can access all the courses videos workbooks labs mind maps quizzes and other study resources. Cisco CCNA CCNP CCIE CCDE Juniper AWS Fortinet Palo Alto and many other vendor courses are frequently updated with the existing and new courses. Have a nice weekend study. #OrhanErgun https://buff.ly/3IKlLjA https://buff.ly/3IKlLjA https://buff.ly/3IKlLjA https://buff.ly/3IKlLjA"
X Link 2025-10-23T12:30Z 13.9K followers, [----] engagements

"The OE Team Training subscription brings many benefits to the IT Employees of the companies. For more information and demo: #cisco #aws #paloalto #fortinet #cloud #networking #security https://buff.ly/43g3Lpr https://buff.ly/43g3Lpr"
X Link 2025-10-23T14:45Z 13.9K followers, [---] engagements

"We continue to add many new courses to our IT Course portal. Network Design AI Cyber Security IT Infrastructure Network Security Network Automation Cloud Networking Professional and Expert Level certifications from CCNA CCNP CCIE all the way towards CCDE and with many vendors check this: #itcourses #orhanergun https://buff.ly/42nwVSp https://buff.ly/42nwVSp"
X Link 2025-10-25T10:45Z 14.2K followers, [----] engagements

"30 hours of the Palo Alto course have just been published. Palo Alto Networks - Next-Generation Firewall Engineer Course: is designed for network engineers and administrators who want to learn how to automate their testing and verification processes using Technology. #PaloAlto #OrhanErgun #ITCourses https://buff.ly/ldiB4eM https://buff.ly/ldiB4eM https://buff.ly/ldiB4eM https://buff.ly/ldiB4eM"
X Link 2025-10-29T10:45Z 13.9K followers, [---] engagements

"VPLS (Virtual Private LAN Service) is a Layer [--] VPN technology that allows service providers to connect multiple customer sites over an MPLS backbone as if they are all on the same Ethernet LAN. In VPLS every participating PE router builds a full-mesh of pseudowires with all other PEs in the same VPLS instance. This mesh simulates a large virtual Ethernet switch. But this full-mesh requirement brings scaling challenges especially when the number of sites grows each new PE adds more signaling and state to every other PE. Thats why in future posts Ill be covering EVPN the modern and scalable"
X Link 2025-11-02T10:45Z 13.9K followers, [----] engagements

"@takiadeen @russ And X platform doesnt allow to fix so let me share here: Thanks Taqi https://orhanergun.net/courses/bgp-border-gateway-protocol-zero-to-hero-by-russ-white https://orhanergun.net/courses/bgp-border-gateway-protocol-zero-to-hero-by-russ-white"
X Link 2025-11-02T17:11Z 14.1K followers, [--] engagements

"Our platform has all these expert-level Cisco courses: CCIE Enterprise CCIE Service Provider CCIE Data Center CCIE Security and CCDE taught by multiple instructors with over [----] hours of video just for these courses. In total we offer more than [----] hours of video content across networking security cloud and AI and we're growing faster than most platforms out there You get everything with one simple and affordable membership: #OrhanErgun #IT #Network #Security #Cloud #AI https://buff.ly/Lf0Z8Oz https://buff.ly/Lf0Z8Oz"
X Link 2025-11-14T14:45Z 14K followers, [----] engagements

"BGP Flowspec is a BGP extension that enables routers to share traffic filtering rules such as dropping or rate-limiting specific flows across the network using the BGP control plane. It is widely used for DDoS mitigation allowing fast distributed filtering without manual config changes. Large ISPs and CDNs use Flowspec daily to stop DDoS attacks in real-time It is powerful but risky if not understood properly. We cover BGP Flowspec in depth in Orhan Erguns BGP Training: and many other BGP topics used in real-world networks. #BGP #Flowspec #NetworkSecurity #NetworkDesign #OrhanErgun"
X Link 2025-11-16T10:45Z 14K followers, [----] engagements

"A Security Operations Center (SOC) is the team responsible for monitoring detecting analyzing and responding to cybersecurity threats 24/7. While a NOC focuses on network uptime and performance the SOC is all about security protecting systems users and data from attacks breaches or suspicious activity. SOC analysts work with tools like SIEM threat intelligence feeds log data and behavior analytics to spot anomalies that might indicate a threat even before an attack fully happens. From malware outbreaks to insider threats the SOC is the frontline defense team keeping the digital side of the"
X Link 2025-11-16T12:30Z 14K followers, 34.8K engagements

"Today's Enterprise networks commonly feature SD-WAN Network Programmability and Campus Automation Management. Cisco remains at the forefront of incorporating these advancements into their certification programs. Explore our comprehensive CCIE Enterprise course offering over [---] hours of in-depth video content covering these topics: #orhanergun #ccie #cisco #ccde https://buff.ly/43yo4hs https://buff.ly/43yo4hs"
X Link 2025-11-21T15:18Z 14K followers, [----] engagements

"The CCIE Service Provider course covers the Cisco CCIE SP Lab exam topics and teaches the technologies from a design and deployment point of view. With this approach it helps the consultants and the solution architects too. Check the sample video in which I explain the technologies approach and course outline. #ccie #sp #networking https://buff.ly/3N1PDKQ https://buff.ly/3N1PDKQ https://buff.ly/3N1PDKQ https://buff.ly/3N1PDKQ"
X Link 2025-11-22T10:45Z 14K followers, [---] engagements

"Guys our Black Friday sale is now live. This is the biggest discount of the whole year. As you might know many new instructors joined us this year new courses and there are now hundreds of courses on the platform. Ill keep it short if you want to learn something new or start a new path this is the best time of the year to do it. 👉 Check all Black Friday deals here: Enjoy the sale #OrhanErgun #IT #Courses https://buff.ly/WE30IBm https://buff.ly/WE30IBm"
X Link 2025-11-25T12:30Z 14K followers, [---] engagements

"Several individuals have inquired whether they can purchase a subscription course or Bootcamp with the Black Friday discount and begin at a later date. The answer is affirmative. Please contact sales@orhanergun.net and they will gladly assist you. #education #ITtraining #orhanergun #learning #cisco"
X Link 2025-11-25T15:02Z 14K followers, [---] engagements

"The latest CCIE Security exam version v6.1 is on the website: More than [--] hours of videos 60+ Practical hands-on labs and hundreds of pages of workbooks will prepare you for the exam and help you with real-life #Cisco security technologies/products and device deployment. You can get this course with a Black Friday discount right now #ccie #cciesecurity #security https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu"
X Link 2025-11-26T12:30Z 14K followers, [---] engagements

"Network design is the backbone of any robust scalable and resilient infrastructure. A well-designed network ensures seamless communication optimal performance and the ability to adapt to future growth. Poorly designed networks on the other hand can lead to bottlenecks security vulnerabilities and costly downtime. Network engineers must prioritize design to address redundancy availability scalability convergence and efficient traffic flow. It's not just about "making things work" but ensuring they work efficiently securely and predictably under most if not all conditions. Effective network"
X Link 2025-11-27T12:30Z 14.1K followers, [----] engagements

"For those who haven't heard the Black Friday offer started on our website. You can start studying for your favorite certification exam or you can learn any technology or protocol to increase your networking knowledge; more than [---] courses [-----] videos 120000+ pages of materials and thousands of practical labs will help your career. Check pricing: #it #itcourses #networking #learning #blackfriday https://buff.ly/3CrofTF https://buff.ly/3CrofTF"
X Link 2025-11-27T17:00Z 14K followers, [---] engagements

"🚨 Black Friday Sale Extended 🚨 Due to popular demand we're extending our Black Friday discount through Cyber Monday and all the way until December 3rd 🛍 Many of you have been asking and were excited to offer you one last chance to take advantage of the biggest opportunity of the year Don't miss out on incredible savings and start the new year with the skills that will take you to the next level. 🎯 This is your moment to invest in your futuregrab it before its gone #BlackFriday #CyberMonday #Discount #Sale #Learning #Education #Opportunity #Skills #TechTraining #CareerGrowth"
X Link 2025-11-29T10:45Z 14K followers, [---] engagements

"One of the unique courses that covers Service Provider design and deployment tips and tricks with so many hands-on labs this CCIE SP course comes with more than a hundred hours of videos and thousands of pages of reading materials. Check this if you are in the SP domain: #cisco #ccie #cciesp https://buff.ly/3N1PDKQ https://buff.ly/3N1PDKQ"
X Link 2025-11-30T12:51Z 14K followers, [---] engagements

"New and interesting courses continue to be published by our instructors. Applied AI for Network Engineers: Practical Tools LLMs & Automation is one of them and the course videos are now being uploaded regularly. You can take advantage of the Black Friday pricing now and start learning later campaign: #AI #ArtificialIntelligence https://buff.ly/f4V5IR5 https://buff.ly/f4V5IR5"
X Link 2025-12-01T11:54Z 14.1K followers, [---] engagements

"Another great morning another brand-new course 😊 This is truly one of those courses that even I enjoy watching myselfsenior engineers will race to take it and juniors might even fight for a spot. Instant access - start learning in [--] seconds Network Troubleshooting and Resiliency by @rtggeek Russ White: Make sure to include it in your study plan this week #Networking #IT #Training https://orhanergun.net/courses/network-troubleshooting-and-resiliency-course-by-russ-white https://orhanergun.net/courses/network-troubleshooting-and-resiliency-course-by-russ-white"
X Link 2025-12-02T09:10Z 14.1K followers, [---] engagements

"Network topology/diagram is a visual map that shows how devices like routers switches firewalls servers and endpoints are connected in a network. Network diagrams help you: Understand the layout of the network Plan and design new setups Troubleshoot issues faster Share architecture clearly with teams and managers Even a simple diagram can save hours of confusion when something breaks or changes. Here are some free tools you can use to draw network diagrams easily: draw .io Web-based free nice for quick drawings Lucidchart (free tier) Drag-and-drop user-friendly LibreOffice Draw Desktop tool"
X Link 2025-12-04T12:30Z 14.1K followers, [----] engagements

"To access many SD-WAN courses from different vendors such as Cisco Palo Alto Fortinet and Versa click here: SD-WAN is one of the most commonly deployed technologies in Enterprise networks today. It's better to learn the fundamentals at least. Those who want to understand in more detail can take courses. Which SD-WAN vendor do you recommend Which one did you experience #sdwan #versa #paloalto #fortinet https://buff.ly/u6pbyRU https://buff.ly/u6pbyRU https://buff.ly/u6pbyRU https://buff.ly/u6pbyRU"
X Link 2025-12-09T17:00Z 14.1K followers, [---] engagements

"With the [--] new Fortinet courses added last week we now have more than [--] Fortinet courses: waiting for you on the site. Theyre saying Come study me :) #Fortinet #SDWAN #Security https://buff.ly/4b1GaHa https://buff.ly/4b1GaHa"
X Link 2025-12-12T10:45Z 14.1K followers, [---] engagements

"A Tier [--] ISP is a service provider that has its own backbone network serves customers directly and also buys IP transit from Tier [--] or other Tier [--] providers to reach parts of the Internet they cant reach through peering. They usually have a national or regional MPLS core operate BGP with upstreams and peers and may have many settlement-free peers at Internet Exchange Points (IXPs). Unlike Tier [--] ISPs they pay for some of their Internet connectivity but they can still be large in size and have complex networks. They are more advanced than Tier [--] ISPs which only rely on upstreams and dont have"
X Link 2025-12-12T14:45Z 14.1K followers, [----] engagements

"New dates for Orhan Ergun's upcoming Cisco CCIE Enterprise Infrastructure Bootcamp: have been announced. Register now to take advantage of an early bird discount learn real-life network deployment and design and receive help passing the exam. #cisco #ccie #ccieei https://buff.ly/ylGuL2B https://buff.ly/ylGuL2B https://buff.ly/ylGuL2B https://buff.ly/ylGuL2B"
X Link 2025-12-17T14:45Z 14.1K followers, [----] engagements

"With this new ACI v6 from foundational concepts and the core object model to advanced topics like L2/L3 Out configurations Multi-POD/Multi-Site designs VMM integration (including new hypervisor support) and cutting-edge operational efficiencies in ACI v6 we cover it all. You'll gain hands-on experience with the latest GUI understand the nuances of policy enforcement and explore how ACI integrates seamlessly with virtualized environments and external networks. #ACI #Cisco #OrhanErgun #ITCourses #Learning #Education #TeamTraining https://buff.ly/NIH9hB9 https://buff.ly/NIH9hB9"
X Link 2025-12-18T17:00Z 14.1K followers, [---] engagements

"40+ hours of video course covering the CCIE Datacenter exam topics you can purchase individually or access with our All-Access pass subscription #CCIE #CCIEDC #CCIEDatacenter #Datacenter #OrhanErgun https://buff.ly/AMoPOLW https://buff.ly/AMoPOLW"
X Link 2025-12-21T16:45Z 14.1K followers, [---] engagements

"30 hours of the Palo Alto course. Palo Alto Networks - Next-Generation Firewall Engineer Course: is designed for network engineers and administrators who want to learn how to automate their testing and verification processes using Technology. #PaloAlto #OrhanErgun #ITCourses https://buff.ly/VblGleE https://buff.ly/VblGleE https://buff.ly/VblGleE https://buff.ly/VblGleE"
X Link 2025-12-22T08:45Z 14.1K followers, [---] engagements

"DMVPN and GETVPN are often compared but they solve very different design problems. DMVPN is a scalable dynamic tunneling solution using mGRE and NHRP. It is ideal for hub-and-spoke or spoke-to-spoke topologies over public or private WANs. While it can use IPsec for security encryption is optional depending on the environment. GETVPN is built for full-mesh private WANs like MPLS. It doesnt build tunnels; instead it encrypts traffic while preserving the original IP header making it great for multicast QoS and policy-based routing. We call it Tunnelless VPN. From a design point of view: DMVPN ="
X Link 2025-12-22T14:45Z 14.1K followers, [---] engagements

"MPLS & Segment Routing: Scalable and efficient traffic engineering for SP networks. BGP: The backbone protocol for the Internet and Service Provider routing. IS-IS: A robust and fast IGP for large-scale SP topologies. NSO: Automating network configuration and management in SP environments. Service Provider Multicast: Efficient video and real-time traffic delivery. QoS: Ensuring traffic prioritization and meeting SLA requirements. All these and much more are covered in Orhan Ergun's CCIE SP course: designed for mastery in Service Provider networks #cisco #ccie #cciesp https://buff.ly/o5IZX4e"
X Link 2025-12-27T14:45Z 14.1K followers, [---] engagements

"Is Sunday morning a good time to start Network Security training We have dozens of them waiting for you to start now and learn Have a look at the Network Security course library: #Cisco #PaloAlto #Fortinet CheckPoint Redhat and more. https://buff.ly/EvGJW5h https://buff.ly/EvGJW5h"
X Link 2025-12-28T10:47Z 14.2K followers, [---] engagements

"'The upcoming #Cisco #CCDE Bootcamp is fast approaching scheduled to take place in under a month. Secure your spot today and don't miss this essential network design training opportunity. For more information and to register for the CCDE Bootcamp please visit the dedicated page: #CCDE #OrhanErgun https://buff.ly/GkE3kk2 https://buff.ly/GkE3kk2"
X Link 2025-12-28T13:58Z 14.1K followers, [---] engagements

"As network designers we call them Functional and Non-functional requirements some other disciplines call them quality attributes (I think it is better terminology) and you can call them ' ilities'. These are some of the essential parameters if you are dealing with network design and architecture: Scalability Availability Reliability Flexibility Usability Manageability Adaptability Interoperability Durability Compatibility Security Mobility Sustainability Extensibility Affordability Serviceability Resiliency Maintainability Accountability Visibility Stability Responsibility Configurability"
X Link 2026-01-01T10:45Z 14.2K followers, [---] engagements

"The weekend often provides an ideal opportunity for many of us to enhance our understanding of networking. Whether you're aiming to expand your expertise or preparing for certifications from renowned providers like Cisco Juniper Palo Alto and Fortinet our course platform is here to assist you. Explore more at: #networking #itcertifications #orhanergun #networking #ccie #ccde #cloud #security https://buff.ly/2ljd5AB https://buff.ly/2ljd5AB"
X Link 2026-01-01T12:30Z 14.2K followers, [---] engagements

"CCDE is not just about knowing protocols. Its about design thinking making the right choices for scalability security convergence and business needs. CCDE training teaches you how to: Compare technologies like MPLS VXLAN EVPN and SD-WAN based on real use cases Evaluate trade-offs (not everything that works is the right design) Design for high availability fast convergence and multi-domain networks Justify your design decisions with business impact in mind It sharpens your end-to-end architecture skills whether it is a Service Provider Enterprise Data Center or Cloud networks. My next CCDE"
X Link 2026-01-06T12:30Z 14.2K followers, [---] engagements

"Interesting new courses continue to be added. For example one of our new instructors has just launched this course: Palo Alto Panorama: Centralized Firewall Management Beginner to Advanced: You can access dozens of Palo Alto courses from excellent instructors all on one platform where you can also get guidance whenever you have questions. Were looking forward to welcoming everyone #PaloAlto #IT #Security https://buff.ly/AEGNzqG https://buff.ly/AEGNzqG https://buff.ly/AEGNzqG https://buff.ly/AEGNzqG"
X Link 2026-01-08T14:45Z 14.2K followers, [---] engagements

"We continue to add many new courses to our IT Course portal. Network Design Infrastructure Security AI Automation Cloud Professional and Expert Level certifications from CCNA CCNP CCIE all the way towards CCDE and with many vendors many instructors check this: #itcourses #orhanergun https://buff.ly/42nwVSp https://buff.ly/42nwVSp"
X Link 2026-01-09T08:45Z 14.2K followers, [---] engagements

"In large-scale Service Provider (SP) networks BGP Route Reflectors (RRs) are essential for improving scalability and reducing the number of BGP peer connections. Without RRs a full mesh of iBGP sessions is required which becomes unmanageable in large networks. A Route Reflector allows an iBGP speaker to advertise routes learned from one client to other iBGP clients and non-client peers effectively breaking the full-mesh requirement. However choosing the right RR placement and understanding its impact on path selection is crucial. Cluster IDs ORR (Optimal Route Reflection) and BGP Add-Path"
X Link 2026-01-10T10:45Z 14.2K followers, [----] engagements

"Less than [--] weeks for the upcoming CCDEv3 Webex-based Bootcamp. If you are seriously targeting this certificate or want to dive into Network Design check the details on this page: #ccde #orhanergun #cisco https://buff.ly/cPbtiP0 https://buff.ly/cPbtiP0"
X Link 2026-01-11T10:45Z 14.2K followers, [---] engagements

"Modern enterprise networks are built on SD-WAN network programmability and automation. Cisco leads these technologies in its certifications. On our platform youll find many CCIE Enterprise courses from multiple world-class instructors. Explore them here: #orhanergun #ccie #cisco #ccde https://buff.ly/aqtbORE https://buff.ly/aqtbORE"
X Link 2026-01-12T12:30Z 14.2K followers, [---] engagements

"Multi-technology labs also known as Mock Labs are helpful for preparing for the #CCIE exams. They include many technologies that are commonly covered in the exams. The Cisco CCIE Security Multi-Technology Lab below will help candidates pass the exam and help students understand how these technologies are used together. #cciesecurity https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu https://buff.ly/3LsFvJu"
X Link 2026-01-14T10:45Z 14.2K followers, [---] engagements

"We continuously add new videos and other resources to the existing courses and new courses to the portfolio. Beginner or Expert everyone can find so many resources on our IT training portal to increase their knowledge: Note: We have so many courses for Professional and Expert-level Network Security and Cloud Certifications which are great for a career change. #it #learning #certification https://buff.ly/42nwVSp https://buff.ly/42nwVSp https://buff.ly/42nwVSp https://buff.ly/42nwVSp"
X Link 2026-01-16T10:45Z 14.2K followers, [---] engagements

"In less than a week the upcoming Webex-based Cisco CCDE Instructor-Led training will start. You can find the details about it and register on this page: #NetworkDesign and Architecture are not the things that you can Google 😉#CCDE #OrhanErgun https://buff.ly/bC2K8I0 https://buff.ly/bC2K8I0"
X Link 2026-01-21T10:45Z 14.2K followers, [---] engagements

"New Course: Palo Alto Firewall Version [--] Essentials - PCNSA - PAN EDU-210. The Firewall Configuration and Management (PAN EDU 210) course covers all the content for the #PCNSA #PaloAlto Networks Certified Network Security Administrator certification https://buff.ly/4ePe1Lv https://buff.ly/4ePe1Lv"
X Link 2024-07-07T12:37Z 14.3K followers, [----] engagements

"I want to giveaway to [--] people#CCIE Enterprise SP or #CCDE training. You can choose any of them and join anytime you want.Just follow me and RT this tweet Even if you don't need them like/RT so your connections can see and get benefit.Live Instructor Led Training #share"
X Link 2020-10-14T09:48Z 14.2K followers, [----] engagements

Limited data mode. Full metrics available with subscription: lunarcrush.com/pricing