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Technology & Architecture
Spine-Leaf EVPN-VXLAN Fabric Design
Spine-leaf EVPN-VXLAN fabric design: eBGP/iBGP underlay, symmetric IRB, ESI multi-homing, and multi-site.
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
VXLAN: Data Center Deployment
VXLAN deployment: L3 underlay, BGP EVPN, ingress replication vs multicast, Cisco/Juniper configuration, and troubleshooting.
April 15, 2026
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Technology & Architecture
Designing an SD-WAN Architecture
Design an SD-WAN architecture in 8 steps, from inventory to rollout. Hub-and-spoke, full-mesh, and hybrid topologies, sizing, and vendors.
April 15, 2026
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Technology & Architecture
Three-Tier Campus Network Architecture
Three-tier campus architecture (access/distribution/core): roles, collapsed core, SD-Access, campus EVPN-VXLAN, and sizing.
April 15, 2026
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Brand guides
Juniper Apstra: intent-based fabric automation
Juniper Apstra: intent-based automation for multi-vendor EVPN-VXLAN fabrics (Cisco/Arista/SONiC).
April 15, 2026
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Brand guides
Juniper QFX: 2026 data center guide
Juniper QFX portfolio: DC leaf/spine, EVPN-VXLAN, 400G QFX5130, QFX10000 core and capacity planning.
April 15, 2026
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Brand guides
Aruba Central: unified HPE Aruba cloud management
Aruba Central cloud: wired, wireless and SD-WAN management, AI Insights, UXI, licensing and Meraki/DNA comparison.
April 15, 2026
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Brand guides
FortiManager and FortiAnalyzer: Centralized Fortinet Management
FortiManager + FortiAnalyzer: centralized orchestration, logs, ADOMs, basic SIEM, appliances, and VMs.
April 15, 2026
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Brand guides
Fortinet FortiAP: Enterprise Wi-Fi Managed by FortiGate
FortiAP portfolio: indoor/outdoor WiFi 5/6/6E/7, FortiGate CAPWAP integration, WIDS/WIPS, and capacity planning.
April 15, 2026
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Brand guides
Fortinet FortiSwitch: Switches Managed by FortiGate
FortiSwitch portfolio: access to core/data center, FortiLink with FortiGate, Security Fabric, and capacity planning.
April 15, 2026
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Brand guides
Cisco Firepower / Secure Firewall: Complete Guide
Cisco Secure Firewall (Firepower): 1010-9300 portfolio, Snort 3, FMC/FDM, and SecureX integration.
April 15, 2026
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Brand guides
Cisco ISE: Enterprise NAC Guide
Cisco ISE: 802.1X NAC, profiling, posture assessment, TrustSec, SNS appliances, licensing, and a comparison with ClearPass.
April 15, 2026