ccna
Why Facebook Runs BGP Everywhere — Even Inside Its Data Centers
An in-depth technical look at Facebook's network infrastructure, including routing protocols, open-source switching, and security architecture, with practical insights for network engineers.
Where Bandwidth Lives in the Routing Table Decision
Bandwidth metric underpins routing decisions and QoS guarantees. This article covers EIGRP composite calculation, OSPF cost, BGP limitations, and CLI troubleshooting — essential for CCNA through CCIE.
How Srinagar’s Geographic Isolation Forces Network Engineering Rethinking
How Srinagar's network engineers built a resilient infrastructure that works despite floods, snow, and geographic isolation.
How Smart Blinds Connect to Your Network: Protocols and Topologies
A network engineer's guide to deploying smart Windows Blinds: VLAN isolation, QoS policies, and security considerations.
Certification Showdown: CCNA vs CCNP
It’s no secret that the world of IT is booming. With so many new jobs on the horizon, having the proper credentials is essential. For candidates looking to break into the field of networking and technology, there are two dominant certification paths—CCNA and CCNP. CCNA is a beginner-level certification, while CCNP is more advanced. If...
Why Every Computer Network Professional Should Have A CCNA
A CCNA or Cisco Certified Network Associate certification is entry-level for computer network professionals. Many employers require employees in this field to have a CCNA, and for a good reason. Obtaining a CCNA demonstrates that an individual has the skills and knowledge necessary to manage small enterprise networks. Organizations in the DevOps sector need team...
Things to do in Denver
Denver is home to one of the highest concentrations of fiber-optic backbone routes in North America. More than a dozen major long-haul carriers—Level 3 (now Lumen), Zayo, CenturyLink, and Cogent among them—converge in the city, making it a critical interconnection point between the West Coast, the Midwest, and the East Coast. This geographic and network...
5 Reasons Why Windows Blinds Are Better Than Curtains or Drapes
When a senior network engineer at a Fortune 500 company was called to a conference room to fix a motorized blind that would not close on command, the initial assumption was a faulty motor or a dead battery. After two hours of swapping hubs and re-pairing remotes, the root cause turned out to be a...
Beauty Of Kashmir- Srinagar
The Dal Lake houseboat, connected to the mainland by a shaky wooden plank, has internet. Not just any internet — a fiber-to-the-home connection pushing 50 Mbps symmetrical, provided by a local ISP that routes traffic through a BGP peering arrangement with a Tier-2 provider in Delhi. This is Srinagar in 2026, a city where 14th-century...
Introduction to Bandwidth Metric
A network engineer stares at a traceroute that defies logic — traffic flows across a 10 Mbps satellite link while a 1 Gbps fiber path sits idle. The root cause isn’t a hardware fault. It’s a misconfigured bandwidth metric. Across every major routing protocol and QoS framework, the bandwidth metric quietly dictates which path packets...