Networking
Proxmox Networking Without Tears
A practical Proxmox networking guide for bridges, VLAN-aware ports, management IPs, bonds, NAT, SDN, and safe change validation.
DHCP vs DNS: What Breaks When Each One Fails
Separate DHCP configuration faults from DNS lookup failures: inspect the client's address and gateway first, then test the configured resolver; a failed ping alone proves neither.
Cisco Catalyst C9550 vs C9350: Choose the Right Campus Role
Map C9350 access requirements and an incumbent C9500 design to a C9550 model, then verify software, optics, licensing, failure tests, and rollback before migration.
Cisco Live 2026 Lab Build: A Small-Scale Reference Architecture
Plan an isolated lab for segmentation, branch routing, private-app access, telemetry, and governed changes, with failure and rollback exercises; this is a proposed build, not reported test results.
Branch Network Design for the AI Era
AI-era branch design needs SD-WAN, SSE, secure access, local resilience, application steering, Wi-Fi capacity, segmentation, and experience telemetry.
Resilience Planning for Cisco Networks: Patch, Shield, Replace, or Segment
A practical resilience model for Cisco networks should classify each exposure into patch, shield, replace, or segment, with owners, deadlines, and evidence.
Designing ThousandEyes Visibility Across Branch, Cloud, and SaaS
ThousandEyes visibility is most useful when tests are designed around user journeys, branch paths, DNS, SaaS dependencies, cloud regions, and actionable alert thresholds.
Cisco SD-WAN to Multicloud Fabric: A Migration Design
A phased migration from SD-WAN and native cloud networking to Cisco Multicloud Fabric should start with inventory, routing domains, security policy, pilot paths, and measurable experience.
Implementing AgenticOps Safely: Human Approval, Audit Trails, and Rollback
Agentic network operations need guardrails: approved action classes, human review, role limits, dry runs, rollback plans, and audit trails before any production change.
Building a Network Digital Twin Workflow
A network digital twin is useful when it models topology, intent, policy, dependencies, and change impact. Here is a practical workflow for using it safely.