Networking
Networking
VLAN, STP, HSRP/VRRP, BGP, OSPF, MPLS, EVPN, QoS — vendor-neutral.
This is the TechLeague pillar page for Networking: 96 hand-curated guides, blueprints and roadmaps, grouped by sub-topic so you can go from zero to production fast. Start anywhere — every article is independent and links back to its cluster.
Latest articles
Routing30
AWS Route 53 vs Cloudflare DNS vs NS1: 2026 Enterprise Authoritative DNS Comparison
Deep dive into AWS Route 53, Cloudflare DNS, and NS1 Connect for enterprise authoritative DNS in 2026. Compare latency, advanced traffic steering, security (DNSSEC), integration, and total cost of ownership for SaaS, gaming, and financial sectors.
Read article →BGP add-paths
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →BGP best practices for the enterprise: from the lab to production
Practical BGP for enterprises: route maps, communities, dampening, BFD, MD5 and graceful restart — without academic fluff.
Read article →BGP communities standard, extended and large
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →BGP confederations
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →BGP Flowspec for DDoS
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →BGP hijack defense playbook
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →BGP looking glasses for ops
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →MP-BGP for IPv6
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →BGP route reflector clusters
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →EVPN over MPLS overview
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →EVPN Type-5 routes for IP-VRF
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →HSRP deep dive with timers and tracking
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →IRR and route objects
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →IS-IS deep dive
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →LDP-IGP synchronization
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →LLDP vs CDP
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →MP-BGP overview
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →MPLS L2VPN and VPLS
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →MPLS L3VPN deep dive
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →MPLS LDP deep dive
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →MPLS vs SD-WAN in 2026: when each still wins
Beyond hype: where MPLS still earns its price, where SD-WAN dominates and how to run a hybrid that doesn't surprise you.
Read article →Multicast RP design with BSR and MSDP
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →OSPF vs IS-IS: which IGP for your enterprise in 2026
Decision guide: OSPF area design, IS-IS levels, scaling, transport flexibility and operational realities.
Read article →OSPFv3 for IPv6
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Route leaking between VRFs
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →RPKI ROA deployment
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →RSVP-TE overview
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Segment Routing MPLS
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →SRv6 overview
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Switching & L29
BPDU Guard and Root Guard
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →CGNAT design
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →EtherChannel and LACP deep dive
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →MACsec 802.1AE deployment
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →MSTP deep dive: instances and regions
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →PVST+ tuning at scale
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →RSTP vs PVST+: production trade-offs
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →VLAN deep dive: from access ports to QinQ
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →VTP: when to use it and when to avoid
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Overlays & DC14
Cisco ACI 6.x vs VMware NSX 4.2 vs NX-OS VXLAN EVPN: 2026 Data Center Fabrics
Deep-dive into Cisco ACI 6.x, VMware NSX 4.2, and native NX-OS VXLAN EVPN for 2026 data center network architectures. Compare TCO, scalability, micro-segmentation, and cloud-native integration for 8-128 leaf deployments.
Read article →How EVPN works: control plane, route types and forwarding
Plain-English walkthrough of EVPN: how BGP advertises MAC/IP, how VTEPs forward, and why it replaced legacy L2 VPNs.
Read article →VXLAN IRB: symmetric vs asymmetric, when to use which
Integrated Routing and Bridging in EVPN-VXLAN explained: anycast gateway, asymmetric vs symmetric IRB, and why symmetric won.
Read article →BUM traffic in EVPN-VXLAN
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Clos fabric underlay design
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →DMVPN Phases 1, 2 and 3 explained
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →EVPN-VXLAN explained: how it works and when you actually need it
Spine-leaf, BGP EVPN control plane, VXLAN data plane, anycast gateway and integration with Cisco/Aruba/Arista/Juniper.
Read article →FlexVPN design
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →GETVPN design
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →GRE tunnels design
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →IPinIP tunnels
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Spine-leaf scaling patterns
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →VRF-Lite design
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →VXLAN unicast vs multicast
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →IPv6 & Multicast6
IGMP snooping deep dive
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →IPv6 Neighbor Discovery deep dive
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →IPv6 SLAAC vs DHCPv6
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →IPv6 transition: 6rd and MAP-T
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Multicast PIM-SM and SSM
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →NAT64 and DNS64
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →QoS & Telemetry11
BFD multihop
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →CoS to DSCP mapping
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →MTU, MSS and PMTUD
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →NetFlow v9 and IPFIX
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →NTP design best practices
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →PTP 1588v2 timing for networks
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Enterprise QoS deep dive: classification, queueing and shaping
QoS that survives audits and works under congestion: DSCP/CoS, queue scheduling, shaping vs policing and end-to-end design.
Read article →sFlow agents design
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →sFlow deep dive
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →SNMPv3 secure design
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →WRED tuning
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →AWS TGW vs Azure vWAN vs GCP NCC: Multi-Cloud Backbone Wars 2026
Deep dive into AWS Transit Gateway, Azure Virtual WAN, and GCP Network Connectivity Center. Compare throughput, pricing, segmentation, and use cases for 2026 multi-cloud infrastructure.
Read article →AWS CloudFront vs Fastly vs Akamai: Enterprise CDNs for 2026
Deep-dive comparison of CloudFront, Fastly, and Akamai for 2026 enterprise CDN deployments. Analyzes performance, cost, edge compute, security, and use cases.
Read article →F5 BIG-IP Next vs. Classic: The 2026 Engineering Migration Guide
An in-depth technical analysis of the transition from F5 BIG-IP Classic to BIG-IP Next in 2026, covering K8s-native architecture, AS3 automation, and migration strategies.
Read article →F5 BIG-IP TMSH to REST/AS3: The 2026 Migration Playbook
Deep dive into migrating F5 BIG-IP management from legacy TMSH scripts to modern iControl REST and AS3 declarative models using a GitOps workflow.
Read article →F5 BIG-IP vs. HAProxy vs. Traefik: The 2026 Load Balancing Showdown
A deep-dive technical comparison of F5 BIG-IP, HAProxy, and Traefik in 2026. Evaluating iRules, HAProxy maps, Traefik automation, and real-world cost per RPS.
Read article →VTEP and VNI explained: the building blocks of VXLAN
What a VTEP actually does, what a VNI represents, and how the two combine to create a tenant overlay over an IP underlay.
Read article →AAA design best practices
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Anycast DNS design
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →802.1X (dot1x) design
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Git workflows for NetOps
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →GLBP load balancing
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →GSLB with DNS
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →IPsec IKEv2 deep dive
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Load balancer L4 vs L7
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →LFA and TI-LFA fast reroute
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Microbursts and tail drop in DC
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →NetBox IPAM overview
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Network automation with Ansible
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →NHRP explained for DMVPN
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →RADIUS vs TACACS+
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Remotely Triggered Black Hole (RTBH)
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →SD-WAN policy and application intent
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Syslog architecture for networks
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →TCP BBR vs CUBIC
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →Terraform for networking
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →VRRP deep dive
Practical, blueprint-driven walk-through with design choices, pitfalls and a fast learning path.
Read article →TechLeague Challenges
Stop reading about Networking. Start competing.
Every guide on this page maps to a hands-on challenge with real ranking. Solve the lab, submit the config, climb the leaderboard.
Open the challenge arena →FAQ
- Where should I start with Networking?
- Open the "Certifications" or "Fundamentals" cluster above and read top-down — every guide is self-contained.
- Are these guides updated for 2026?
- Yes. Every post on this page is dated 2026 and follows current vendor blueprints.
- Do I need a lab to follow them?
- Recommended. Most guides include lab suggestions; for Networking a free trial or sandbox is usually enough.