A complete engineering resource for enterprise network design professionals. Covers campus and data-center network architecture, structured cabling per TIA-568, wireless network design (802.11), PoE budget planning, VLAN/IP addressing schemes, and low-voltage systems integration including access control and CCTV.
Built for network engineers, low-voltage designers, IT infrastructure managers, and networking certification candidates. Covers the structured cabling and network segmentation practices used in commercial and campus deployments.
VLAN design, IP addressing, WAN sizing, QoS (DSCP), security architecture, cable schedule (TIA-568), rack diagram, equipment BOM, and design package.
Enterprise campus and data-center topology, SD-WAN, firewall zoning, IPAM, capacity modeling, redundancy planning, and full design package.
Full topology builder: drag-and-drop routers and switches; run OSPF SPF (multi-area, O IA), IS-IS (L1/L2/L1L2 multi-area), BGP (eBGP/iBGP, Route Reflectors, best-path), MPLS LDP, SR-MPLS (Node-SID/Adj-SID/LFIB), SRv6, SR-TE explicit paths (segment lists → label stacks), MPLS L3VPN with VRF and Route Targets, and EVPN/VXLAN (Type-2 MAC/IP + Type-5 prefix, VTEP discovery). Realistic CLI for all protocols. Supports Cisco, Juniper, Arista, Nokia.
Toggle link and device failures across a three-tier core/distribution/access topology with optional dual paths. Computes end-to-end availability, downtime/yr, and whether connectivity survives using series/parallel reliability math.
Set link capacity and per-class offered traffic (voice/video/data) with DSCP priorities. Strict-priority scheduling shows per-class throughput, drops, and latency as the link saturates and oversubscribes.
Define VLAN segments with host counts and watch VLSM allocate non-overlapping subnets from a /16 block. Visualizes address blocks, usable hosts, and address waste with a live allocation table.
IPv4 CIDR subnet math: network address, broadcast, subnet mask, wildcard, first/last host, and usable host count. Quick presets for /24–/30.
WAN circuit sizing from user count and application profile. Concurrency and overhead factors. Recommends standard carrier circuit tier.
PoE power budget for 4 device groups. Calculates max draw, required PSU, and recommended standard switch PSU size with efficiency factor.
Server rack kW to kVA, BTU/hr, tons, and CFM. UPS battery runtime, Ah sizing, and PDU amperage at 208V single or 3-phase.
Log-distance path loss model for 6 environment types. Coverage radius from EIRP, frequency, and receiver sensitivity. AP count from floor area.
Define VLAN segments with host counts and get the minimum /prefix that fits. Shows usable IPs, address waste, and design guidelines.
System availability from series component reliabilities. Dual ISP parallel redundancy option. Annual downtime, SLA tier, and MTBF.
RAID usable capacity, deduplication, and compression ratios. Multi-year growth projection for SAN/NAS sizing. Disk count estimate.
DSCP mapping and bandwidth allocation per traffic class. Visual bandwidth bar, allocation balance check, and queuing mechanism notes.
TIA-568 channel compliance check for Cat 5e–8 and fiber. Horizontal run + patch cord total, connector loss, and attenuation budget.
Enterprise networking and IT are certification-driven. This overview maps the main vendor-neutral (CompTIA) and vendor (Cisco, Juniper) networking tracks, structured-cabling design (BICSI RCDD), and security (CISSP) — what each covers and how they ladder.
CompTIA Network+ prep: OSI/TCP-IP, subnetting, routing/switching basics, media, wireless and troubleshooting.
CompTIA Security+ prep: threats, cryptography, identity & access, network security, and risk/governance.
Cisco CCNA prep: routing, switching, IP services, security fundamentals, and automation/programmability.
Cisco CCNP Enterprise prep: advanced routing, VPN/overlays, assurance, security and automation (core + concentration).
Cisco CCIE prep: the expert-level 8-hour hands-on lab plus qualifying exam — design, deploy and troubleshoot at scale.
BICSI RCDD prep: structured-cabling and telecom infrastructure design — pathways/spaces, bonding, and TIA/ISO standards.
CISSP prep: the eight (ISC)² domains — risk management, architecture, network security, IAM and security operations.
Interactive 13-section enterprise networking reference covering OSI model, Ethernet/VLANs/STP, OSPF/BGP routing, network security, Wi-Fi 6 design, SD-WAN, spine-leaf data center topology, VXLAN/EVPN, and cloud networking.