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Technology & Architecture
Network Automation: Ansible and Python
Network automation: Ansible, Python (Netmiko/NAPALM), Terraform, NETCONF/YANG, CI/CD, GitOps, and NetBox.
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
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Technology & Architecture
NetFlow, sFlow, IPFIX: Monitoring and Flow Analytics
NetFlow, sFlow, and IPFIX: differences, Cisco/Juniper configuration, collectors, and monitoring and security use cases.
April 15, 2026
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Technology & Architecture
Wi-Fi 6: Design and Site Survey
WiFi 6/6E/7 design: predictive/passive site surveys, AP density, channels, mGig uplinks, and 802.11k/v/r roaming.
April 15, 2026
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Technology & Architecture
Site-to-Site IPsec VPN: Detailed Configuration
Site-to-site IPsec VPN: IKEv1 vs IKEv2, Phase 1/2, AES-GCM, PFS, FortiGate/Cisco configurations, NAT-T.
April 15, 2026
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Technology & Architecture
DNS: Enterprise Architecture
Enterprise DNS architecture: AD DNS, BIND, Split-Horizon, DNSSEC, DoH/DoT, SASE filtering, and monitoring.
April 15, 2026
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Technology & Architecture
DHCP: Enterprise Architecture
DHCP architecture: relay, failover, split-scope, snooping, DAI, IP Source Guard, options, DHCPv6, and NAC.
April 15, 2026
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Technology & Architecture
IPv6: Enterprise Deployment
Enterprise IPv6: /48 addressing plan, SLAAC, DHCPv6, dual-stack, NAT64, security, routing, DNS.
April 15, 2026
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Technology & Architecture
Multicast: IGMP, PIM, and Architecture
Enterprise multicast: IGMP snooping, PIM-SM/SSM, RP (static/BSR/Anycast), MSDP, IPTV, and trading.
April 15, 2026
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Technology & Architecture
802.1Q VLAN Trunk: Architecture and Configuration
802.1Q VLANs: tag structure, access/trunk modes, native VLAN, voice VLAN, PVLAN, VTP, QinQ, and VXLAN.
April 15, 2026
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Technology & Architecture
VRRP and HSRP: High-Availability Gateways
VRRP/HSRP/GLBP: gateway high availability, HSRP vs. VRRP, object tracking, and modern EVPN anycast gateways.
April 15, 2026
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Technology & Architecture
LACP: Best Practices and Configuration
LACP 802.3ad: modes, load balancing, MC-LAG/vPC/MLAG, ESI-LAG EVPN, and Cisco/Juniper configuration.
April 15, 2026
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Technology & Architecture
STP and Its Variants: Loop-Free Design
STP/RSTP/MSTP/PVST+: loop-free design, PortFast, BPDU Guard, Root Guard, and the SD-Access alternative.
April 15, 2026