📡
For network engineers
Multi-Area OSPF: Design and Configuration for Enterprise Networks
Multi-area OSPF: stub/NSSA/totally stubby areas, summarization, BFD, SHA-256, and a design for 2000 routers.
April 15, 2026
Technical resources
Original optics, documented by reference.
Buying guides, technical notes and manufacturer-reference resources for professional optical links.
Editorial scope
SFP through QSFP-DD · original manufacturer references · selection boundaries · procurement context
📡
For network engineers
BGP Route Reflector: High-Availability Design and Deployment
BGP Route Reflectors: design, HA clustering, ORR, Cisco IOS-XR/Juniper configuration, and monitoring.
April 15, 2026
📡
For network engineers
Wireshark for Network Analysis: Advanced Techniques for Engineers
Advanced Wireshark: display filters, TCP streams, VoIP, TLS decryption, BGP, Expert Info, and I/O graphs.
April 15, 2026
📡
For network engineers
Network Troubleshooting: A Structured Methodology for Engineers
Network troubleshooting: OSI methodology, tools, Cisco/Juniper commands, common issues, and packet captures.
April 15, 2026
📡
For network engineers
Segment Routing with IS-IS: Practical Migration and Configuration
SR-MPLS Segment Routing migration: comparison with LDP/RSVP, SRGB, SR-TE, FRR TI-LFA, Juniper/Cisco/Nokia.
April 15, 2026
📡
For network engineers
EVPN-VXLAN on Cisco Nexus: Complete Deployment Guide
Cisco Nexus NX-OS EVPN-VXLAN deployment: BGP underlay/overlay, anycast gateway, ESI LAG, VRF.
April 15, 2026
📡
For network engineers
NETCONF and YANG: Automating Networks with Data Models
NETCONF + YANG: data models, OpenConfig, gNMI, streaming telemetry, multi-vendor environments, and tools.
April 15, 2026
📡
For network engineers
Python for Network Automation: Netmiko and NAPALM in Practice
Python for network engineers: Netmiko, NAPALM, PyEZ, Nornir, Scapy, Jinja2, use cases, and skills.
April 15, 2026
📡
For network engineers
Network Automation with Ansible: A Complete Guide for Engineers
Ansible for networking: installation, inventory, playbooks, Cisco/Juniper/FortiGate modules, AWX, CI/CD, and NetBox.
April 15, 2026
📡
Network glossary
What Is a Router? Definition and Differences from a Switch
What is a router? Definition, OSPF/BGP routing protocols, router types, and differences from an L3 switch.
April 15, 2026
📡
Network glossary
What Is a Network Switch? Definition, Types, and Selection Guide
What is a network switch? Definition, L2/L3, managed/PoE, specifications, and brands.
April 15, 2026
📡
Network glossary
What Is a VLAN? Definition, Operation, and Configuration
What is a VLAN? 802.1Q definition, access/trunk modes, security, and VXLAN beyond 4094.
April 15, 2026