Networking Nepal

25/04/2026

CCNA 200-301 Day 5 : Master the Complete OSI Model Part 2 - Your SECRET KEY to CYBER SECURITY! CCIE Jiwan Bhattarai reveals how OSI layers unlock network attacks & defenses in simple Nepali.

✅ OSI Mastery + Security:
Layer 1-2: Physical attacks, MAC spoofing, ARP poisoning
Layer 3-4: IP attacks, port scanning, DDoS protection
Layer 5-7: Application exploits, encryption, secure protocols
Cyber Security MAPPING across all 7 layers
Real attack examples + Cisco defense strategies

📝 VOLUNTEERS NEEDED!
Create CHAPTER TIMELINE in comments:
00:00 Intro
??:?? Topic

💡 YOUR NOTES: Share what you understood about this topic! Best contributors get support from a mentor. Let's build Nepal's #1 Networking resource! 🙏🇳🇵

================================
A Heartfelt Thank You to Wonderful Viewers, Supporters, and Community🙏

I am deeply grateful for the time you spend watching and engaging with our content. Your support and encouragement inspire me every day to keep sharing and growing. Together, we are building a community centered on mindfulness, personal growth, and positivity 🙏🌱.
================================
If you’d like to stay connected and continue this journey with me & Team, here are some ways we can keep in touch:

Connect with me:

LinkedIn: https://www.linkedin.com/in/jiwanbhattarai
Website: https://www.jiwanbhattarai.com
Join for Mindfulness: https://jiwanbhattarai.com/mindfulness/
Bootcamp Updates: https://networkingnepal.com/
WhatsApp/Telegram: +977-986-6358671
Instagram: https://www.instagram.com/jiwanbhattaraiofficial/
Instagram (Yoga): https://www.instagram.com/yogijiwan/
TikTok: https://www.tiktok.com/
Twitter: https://twitter.com/CCIEJIWAN
Telegram: https://t.me/jiwanbhattarai
For business inquiries:
Contact: contact [at] jiwanbhattarai.com

Thank you for being a part of this journey. Your presence here is a reminder that together, we can inspire and uplift each other. Let’s continue to grow, learn, and make a positive impact in the world 🌎 ✨️
================================
Legal Notice:
Downloading or copying full or partial clips from this video for use elsewhere will result in legal action. Sharing links or embedding on websites is permitted.

Disclaimer:
The content on this channel is for educational and informational purposes only. All views and opinions expressed in the videos are solely those of the creator and do not represent any organization, institution, or entity.

Copyright Notice:
All content, including videos, images, and audio, is either original creation by the channel owner or used under fair use terms for educational purposes. If you believe your copyrighted material has been used inappropriately, please contact us to resolve the matter.

Independence:
This channel is not affiliated with, endorsed by, or connected to any political, religious, or other organizations. Content is created independently without external influence.

Educational Purpose:
Information provided is intended as a learning resource for personal development. It should not be considered professional advice. Viewers should conduct their own research and consult professionals as needed.

Contact: report (at) jiwanbhattarai.com

CCNA 200-301, Day 5 Part 2, OSI Model Complete, Cyber Security OSI, Network Security, CCNA Nepali, OSI Layers Cyber Attacks, CCNA Bootcamp, CCIE Jiwan Bhattarai, ARP Poisoning, DDoS Protection, Application Security, jiwanbhattarai, Cisco Security CCNA 200-301, Day 6 CCNA, OSI Layer 2, Data Link Layer, MAC Address, Ethernet Frame, LLC MAC Sublayer, Switch MAC Learning, Error Detection CRC, VLAN Tagging, CCNA Nepali, CCNA Bootcamp, CCIE Jiwan Bhattarai, jiwanbhattarai

25/04/2026

Day 5 || Part- 1 || How to Master OSI Mode ?? || Fiber Copper Cabling, PoE, OSI Model with Jiwan Sir

💡 YOUR NOTES: Share what you understood about this topic! Best contributors get support from a mentor. Let's build Nepal's #1 Networking resource! 🙏🇳🇵

================================
A Heartfelt Thank You to Wonderful Viewers, Supporters, and Community🙏

I am deeply grateful for the time you spend watching and engaging with our content. Your support and encouragement inspire me every day to keep sharing and growing. Together, we are building a community centered on mindfulness, personal growth, and positivity 🙏🌱.
================================
If you’d like to stay connected and continue this journey with me & Team, here are some ways we can keep in touch:

Connect with me:

LinkedIn: https://www.linkedin.com/in/jiwanbhattarai
Website: https://www.jiwanbhattarai.com
Join for Mindfulness: https://jiwanbhattarai.com/mindfulness/
Bootcamp Updates: https://networkingnepal.com/
WhatsApp/Telegram: +977-986-6358671
Instagram: https://www.instagram.com/jiwanbhattaraiofficial/
Instagram (Yoga): https://www.instagram.com/yogijiwan/
TikTok: https://www.tiktok.com/
Twitter: https://twitter.com/CCIEJIWAN
Telegram: https://t.me/jiwanbhattarai
For business inquiries:
Contact: contact [at] jiwanbhattarai.com

Thank you for being a part of this journey. Your presence here is a reminder that together, we can inspire and uplift each other. Let’s continue to grow, learn, and make a positive impact in the world 🌎 ✨️
================================
Legal Notice:
Downloading or copying full or partial clips from this video for use elsewhere will result in legal action. Sharing links or embedding on websites is permitted.

Disclaimer:
The content on this channel is for educational and informational purposes only. All views and opinions expressed in the videos are solely those of the creator and do not represent any organization, institution, or entity.

Copyright Notice:
All content, including videos, images, and audio, is either original creation by the channel owner or used under fair use terms for educational purposes. If you believe your copyrighted material has been used inappropriately, please contact us to resolve the matter.

Independence:
This channel is not affiliated with, endorsed by, or connected to any political, religious, or other organizations. Content is created independently without external influence.

Educational Purpose:
Information provided is intended as a learning resource for personal development. It should not be considered professional advice. Viewers should conduct their own research and consult professionals as needed.

Contact: report (at) jiwanbhattarai.com

CCNA 200-301, Day 5 CCNA, Fiber Optic Cable, Copper Cabling, PoE, OSI Layer 1, CCNA Nepali, Physical Layer, Cat5e Cat6, Single Mode Fiber, Multimode Fiber, Ethernet Cabling, CCNA Bootcamp, CCIE Jiwan Bhattarai, T568A T568B, jiwanbhattarai

23/04/2026

🌟 7-Day CV Mission for Nepali Students
150 Resumes. 1 Global IT Mentor. Zero Cost. Pure Impact.
📌 Read carefully before you apply. 🇳🇵🙌

Namaste everyone 🙏
I’m Jiwan Bhattarai — a Global IT Expert, Mentor, Career Guide, and education activist , working across multiple countries and multivendor technologies including Datacenter, Networking, Cloud, Cyber Security, IT Consulting and Mentorship.
But beyond technology — I am a servant of Nepali youth. Every skill I have earned across the globe, I bring it back for you.

💡 Why Am I Doing This?
I have reviewed hundreds of resumes from talented Nepali students — and the pain is always the same:
“Great potential. Wrong presentation.”
Your college gave you knowledge. But nobody taught you how to package it for the real world. That gap is costing you jobs, internships, and opportunities — both inside Nepal and globally.
That ends today.

🚀 Introducing: The 7-Day CV Mission
I am personally launching a non-profit 7-Day CV Preparation Mission — completely free — for:
•🇳🇵 Students currently inside Nepal
•✈️ Nepali students living and studying abroad
•🎓 Fresh graduates, career changers, and dropouts
•💼 Anyone serious about building a real IT career

Our Mission: Create 150 industry-ready, impressive resumes that actually open doors — not just fill space on paper.

🔍 What I Will Personally Do For You

During these 7 focused days, I will personally study your resume and:
✅ Identify weaknesses and missing elements holding you back
✅ Bridge the gap between college education and real-time IT industry expectations
✅ Share practical resume-hack tricks to position your skills for local and global opportunities
✅ Provide a personalized gap analysis — so you know exactly where you stand and what to build next
✅ Guide your career direction based on your background, skills, and global IT market demand
This is not a template. This is not automation.
This is me — sitting with your resume — thinking about your future.

🔐 Your Privacy is Sacred
Your resume data will remain completely private and strictly confidential — with me only. I treat your personal information with the same respect I give to enterprise-level data security. 🔒🙏

🌱 A Word From My Heart
I have walked long roads — across countries, across failures, across challenges that once felt impossible. And I learned one truth:

“Your past does not define your future. Rise. Learn. Conquer.”

Whether you are from a rural village or a city, whether you are a boy or a girl, whether you are a beginner, a dropout, or someone who has failed

✨ Everyone carries the seed of greatness. You just need the right guidance to bloom.

This mission is my small gift to the 10,000 Skilled Engineer Mission — because Nepal deserves engineers who can compete and lead on the global stage. 🌍

📩 How to Join — 3 Simple Steps
1. 💬 Comment “CV Mission” below, must share this post 🤲🏻❤️
2. 📥 Send me a direct message in my inbox
3. 📋 Follow my resume-hack tips for just 5 focused minutes — and watch your CV transform
Spots are limited to 150 students. First come, first served.

Don’t wait. Don’t make excuses.
This is your moment. 🔥

— Jiwan Bhattarai
🌐 Global IT Expert | Mentor | Career Guide

🎯 10,000 Skilled Engineer Mission — For Nepal. For the World.
🇳🇵 Let’s grow together.

16/04/2026

11-12th grade & College students can start their with global IT expert 🇳🇵❤️✨.
Don’t miss the opportunity

28/03/2026

meetup 🎉

28/03/2026

Meetup 🎉😇

21/03/2026

🇳🇵❤️

23/02/2026

कतै तपाईंले आफ्नै बच्चालाई डिप्रेसनको सिकार बनाउँदै त हुनुहुन्न? 😢

“स्कूलमा First होऊ!”, “कलेजमा टप गर!”, “तेरो साथीले तँलाई जित्यो!” भनेर हरेकदिन चिच्याएर दबाब दिँदा बच्चा सुध्रिँदैनन्—टुट्छन्। 😢😰

अत्यधिक अंक Score) को दबाब, अरूसँग तुलना गर्ने बानी, र “फर्स्ट नभए असफल” भन्ने सोचले बच्चाको आत्मविश्वास कमजोर बनाउँछ। धेरै बच्चा भित्रभित्रै पीडामा बाँचिरहेका हुन्छन्—राति एक्लै आँसु बगाउँछन्, स्कूल जान डराउँछन्, आफैंलाई "असफल" ठान्न थाल्छन्,पढाइलाई डरको रूपमा लिन थाल्छन्, मानसिक तनाव, चिन्ता, र डिप्रेसनको शिकार बन्छन् र केही बच्चाहरू त जिउनै छोड्ने विचार गर्न पुग्छन्।😭

यो उनीहरूको कमजोरी होइन — यो हाम्रो गलत अभिभावकत्व ( Parenting), गलत अपेक्षाको परिणाम हो।😨🙏

एकचोटि सोच्नुहोस्—के सफलता भनेको कक्षामा फर्स्ट हुनु मात्रै हो?
बच्चाको सफलता भनेको केवल अंक होइन; उसको आत्मसम्मान, सीप, सृजनशीलता, खेल, रुचि,जिज्ञासा, र स्वस्थ मन पनि हो। जबरजस्तीले सिकाइ आउँदैन—सुरक्षित वातावरण, समझदारी, र प्रेमले आउँछ।

बच्चालाई मुक्त गर्नुहोस् 🐥🕊—दबाबबाट होइन, समझदारी र प्रेमबाट
• जिज्ञासालाई ठाउँ दिनुहोस्। पढाइसँगै खेल, रुचि, र सपनालाई पनि सम्मान गर्नुहोस्।
• “टप गर” होइन,
“तिमीले के बुझ्यौ?”, “तिमी आफ्नै प्रयासमा खुसी छौ?”, “अर्कोपटक कहाँ सुधार गर्ने?”, “म कसरी सहयोग गरूँ?” भनेर सोध्नुहोस्।
• गल्तीमा गाली होइन, साथ दिनुहोस्। हात समातेर सिकाउनुहोस्—गल्ती सिकाइको ढोका हो।
• तुलना बन्द गरौँ। “फलानोजस्तो बन्” भन्दा बच्चाले आफूलाई ‘कम’ ठान्न थाल्छ—यहीँबाट मन कमजोर हुन्छ।
बच्चा डरले होइन, प्रेमले सिक्छ।
बच्चा दबाबले होइन, सम्झाइ र सहाराले बलियो बन्छ।

बच्चालाई सीमाहीन (Boundary-less) बनाउनुहोस् —अपमान, डर, र अनावश्यक दबाबबाट मुक्त वातावरण दिनुहोस्, जहाँ ऊ निडर भएर सिक्न सकोस्। 🕊

महानुभाव हरु, कृपया आफ्नो छोरा, छोरी को ग्रेडिङ न सुनाई दिनु होला, आफुलाई अरुले जित्यो भने नानी हरु को मनोविज्ञान मा मानसिक तनाव हुन्छ है। बधाई चै हामी सबै मिलेर दिने छौ। 🙏🙏
सबैभन्दा ठूलो कुरा–नतिजा होइन, नानीहरूले गरेको प्रयास हो। बारम्बार ग्रेड र मार्क्स मात्र सोध्दा उनीहरूभित्र “म अरु भन्दा कमखालको हुँ” भन्ने घाउ बस्छ, जुन भविष्यमा आत्मविश्वास र सम्बन्ध दुवैका लागि खतरनाक बन्छ।
कृपया अंक होइन, उनको मेहनत, सीप र सानो प्रगतिको पनि कदर गरौँ। गल्ती भए साथ दिनौँ, थिचोमिचो होइन, उत्साह र माया दिऔँ। हाम्रो एउटै संवेदनशील वाक्यले पनि बच्चाको मन हलुका बनाउन सक्छ, र एउटै कठोर प्रश्नले वर्षौँसम्म नफर्कने घाउ दिन सक्छ।
आउनुस्, नतिजा भन्दा नानीहरूको मानसिक स्वास्थ्य र सपनालाई प्राथमिकता दिऔँ। उनीहरूको मुस्कान जोगाउनु नै अभिभावकको सबैभन्दा ठूलो जित हो। 🌱✨

यो सन्देश सबै अभिभावक, शिक्षक र विद्यार्थीका लागि चेतनामूलक हो—SAVE + SHARE गर्नुहोस्।🙏🕊🌱

तपाईंको विचार के छ? आजको संसारमा बच्चालाई कसरी सिकाउनुपर्छ, कसरी बुझाउनुपर्छ? Comment मा लेख्नुस्—तपाईंको कुरा सम्मानित छ। 🙏
Source: Global Learning Feedback Motivation Podcast Series Team🇳🇵
Video Edit: Sameer Guragain

14/02/2026

🙏

07/02/2026

‼️🇳🇵📖🌎

नमस्कार सबैलाई! 🙏,

हामी Global Learning Team मिलेर Review Session/ Podcast Series सुरु गरेका छौं ।🌱🇳🇵

यस Session मा प्रत्येक Student/ Working Professinal ले beginner देखि आजको स्थानसम्म आइपुग्दाका भोगाइ, IT क्षेत्रमा गरेका संघर्ष, र निरन्तर अघि बढ्न मद्दत गर्ने प्रेरणाका बारेमा कुरा गरिरहेका छौँ। साथै, हजारौं नेपाली विद्यार्थीहरूलाई प्रविधिमा बाटो देखाउने मेरो प्रयास र शिक्षण शैलीले तपाईंहरूको करियरमा कस्तो परिवर्तन ल्यायो, हाम्रो भेट कसरी कहाँबाट भयो भन्दै पुरानो दिनहरूलाई सम्झिँदै हामी session गरिरहेका छौं।

मेरा प्यारा पूर्व विद्यार्थीहरूमा विशेष आग्रह: तपाईंहरू सबैलाई यो Session मा जोडिन र आफ्ना अनुभवहरू नयाँ सिक्दै गरेका भाइबहिनीहरूसँग बाँड्न आग्रह गर्दछु। तपाईंको एउटा सानो अनुभवले भाइबहिनीहरूलाई जस्तोसुकै कठिन परिस्थितिमा पनि अगाडि बढ्न, decision गर्न, even करियरको दिशा बदल्न सक्छ।
कृपया आफ्नो उपलब्धता र समय (Availability) तल कमेन्ट गर्नुहोला वा मलाई सिधै message पठाउनुहोला।

नयाँ विद्यार्थी भाइबहिनीहरूका लागि: यदि तपाईं Beginner हुनुहुन्छ, IT मा career शुरु गर्न चाहानुहुन्छ, अलमल्ल हुनुहुन्छ भने तपाईले आजैदेखि यी podcast को यात्रा सुरु गर्नुहोस्।

All Session’s Youtube Link 🔗:

EP_1 Global Team Learning Motivation, Experience Sharing Session- Deepak Khatri Japan
Link:http://youtube.com/watch?v=guV8p-YXHD0&list=PLyfWieERNw25iXTzwidmeCTm9STH_996p&index=2

EP_2 Global Team Learning Motivation, Experience Sharing Session- Santosh Gaire Network Engineer
Link:https://www.youtube.com/watch?v=DdJXrmgsK20&list=PLyfWieERNw25iXTzwidmeCTm9STH_996p&index=1

Ep-3 || DevOps भनेको के हो र को–को DevOps Engineer बन्न सक्छ?DevOps journey ~ Er. Rojan Shrestha Link:https://www.youtube.com/watch?v=3gXGBte_jrY&list=PLyfWieERNw25iXTzwidmeCTm9STH_996p&index=3

EP_4 ||🎙️From Class 6 Curiosity to Guiding Thousands Nepali Learners: CEE, BE, USA Dreams & More | Anil Bhandari
Link:https://www.youtube.com/watch?v=4nHCP-qW3lQ&list=PLyfWieERNw25iXTzwidmeCTm9STH_996p&index=4

Ep_5 | Ultimate IT Career Roadmap for Nepali Students: Skills, Mentorship & Wisdom | Nikant Thatel
Link:https://www.youtube.com/watch?v=lzPY7KLlvbw&list=PLyfWieERNw25iXTzwidmeCTm9STH_996p&index=6

Ep_6 | Nepal to USA: Cybersecurity Career Guide for Nepali Students | Mentorship & IT Skills Secrets | Asim Tara Pathak
Link:https://www.youtube.com/watch?v=R-cH7_bdmkY&list=PLyfWieERNw25iXTzwidmeCTm9STH_996p&index=5

Ep-7 || IT Collaboration & Motivation Beyond Borders and Languages Barriers || Global Team - India
Link: https://www.youtube.com/watch?v=BI6KL2EvuT8&t=27s

🔥 Fueling the Mission

"एकजनाको अनुभव, हजारौंको भविष्य! 🚀

Join me in our mission to empower 10,000 skilled IT Engineers from Nepal to the World. Let’s build the future, one story at a time!"

🤝 Join the Movement!

If you are passionate about the JiwanBhattarai Mission and want to volunteer as a driver of this program—or if we want you in our Global Team! 🌍✨

📲 Be the spark: Feel free to message me directly on WhatsApp to join the team or book your session!

Thank You! 🙏❤️

Thank you to all Global Learning Team members for supporting and leading these sessions. Thank you to all members who joined and shared their experiences. Your stories are inspiring and encouraging the new generations.

Together, we can build a brighter future for Nepal Students! 🇳🇵✨

29/12/2025

🎙️Maximize Your Network's IP Efficiency: Understanding /31 Subnets

Hello Network Professionals,

Today we're diving into one of the most elegant solutions for IPv4 address conservation: the /31 subnet, standardized by RFC 3021. If you manage carrier infrastructure, ISP backbones, or enterprise WAN links, this is essential knowledge.

# # # What is a /31 Subnet?

A /31 subnet uses a mask of 255.255.255.254, providing exactly two usable IP addresses. Unlike traditional /30 subnets that waste two addresses as network and broadcast identifiers, RFC 3021 redefines both addresses as hosts on point-to-point links.

# # # Why It Matters: The Math

On a /30 subnet, you get 4 addresses: 2 wasted (network and broadcast), leaving only 2 usable hosts. A /31 gives you 2 addresses, both usable. For an ISP with 500 point-to-point links, this halves address consumption—saving approximately 1,000 addresses equivalent to four Class C networks.

# # # How It Works: The Theory

RFC 3021 operates on a critical insight: point-to-point links have exactly two endpoints with no broadcast domain. Every packet transmitted reaches the single peer directly. Therefore, the traditionally "reserved" network and broadcast addresses become legitimate hosts.

Broadcast functionality remains intact through the limited broadcast address 255.255.255.255. This approach eliminates directed broadcasts to /31 links, eliminating a DoS amplification vector.

Routing protocols (OSPF, IS-IS, BGP, EIGRP) require zero modifications. All operate seamlessly on /31 because they use classless routing (CIDR) and never relied on traditional broadcast address mechanics.

# # # Real-World Deployment: Vendor Support

Cisco IOS, Juniper Junos, and Arista EOS all support /31 on point-to-point interfaces. Configuration is straightforward:

**Cisco Example:**
interface Ethernet0
ip address 192.0.2.0 255.255.255.254
no shutdown

**Juniper Example:**
set interfaces ge-0/0/0 unit 0 family inet address 192.0.2.0/31

Operational testing by multiple ISPs confirmed successful RFC 3021 implementation across OSPF, IS-IS, and BGP before standardization.

# # # Where /31 Works (Support Cases)

- Router-to-router WAN serial links
- Ethernet point-to-point backbones
- Frame Relay PVCs
- MPLS pseudowires
- Carrier infrastructure requiring address conservation
- Any numbered point-to-point link between two routing devices

Both endpoints must support RFC 3021 for proper operation.

# # # Where /31 Fails (Unsupported Scenarios)

Do NOT use /31 on:

- Multi-access LANs (switches, hubs): Causes ARP flooding and broadcast ambiguity
- Host operating systems: Windows, older Linux kernels reject /31 as invalid
- Legacy pre-2000 routers: May not comply with RFC 3021
- Virtual interfaces: Some VLAN implementations assume wider subnets
- Asymmetric links: Where only one endpoint supports /31

# # # The Bottom Line

/31 subnets represent a win-win: massive address efficiency with zero operational complexity on modern routing equipment. If your infrastructure uses point-to-point numbered links and your vendors support RFC 3021, deploying /31 globally is a best practice for large-scale networks.

📚 References

RFC 3021 - Using 31-Bit Prefixes on IPv4 Point-to-Point Links
https://datatracker.ietf.org/doc/rfc3021/

RFC 3021 Full Text (Tech-Invite)
https://www.tech-invite.com/y30/tinv-ietf-rfc-3021.html

Cisco IOS Configuration Documentation
https://www.cisco.com/c/en/us/support/docs/

Juniper Networks /31 Support Documentation
https://www.juniper.net/documentation/us/en/software/junos/interfaces-fundamentals/

IETF RFC Editor - RFC 3021 Information
https://www.rfc-editor.org/info/rfc3021

Juniper Point-to-Point Interface Configuration
https://www.juniper.net/documentation/us/en/software/junos/interfaces-security-devices/

#/31Subnet .com Jiwan Bhattarai

18/10/2025

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