Your free networking resources
Choose a reference below, then use the download button on its page. These PDFs are included with a free PingLabz membership.
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- Linux Networking field-reference PDF → — Diagnostic commands, output examples, and troubleshooting.
- Cisco ASA field-reference PDF → — A practical firewall command reference.
- BGP field-reference PDF → — Routing commands and field-reference notes.
- OSPF field-reference PDF → — Neighbor, routing, and troubleshooting reference.
New free PDF downloads
iPerf3 Quick Reference
Free with a PingLabz account · 4 pages · US Letter PDF
TCP, reverse mode, parallel streams, UDP, and JSON commands in one place. Includes Linux output examples and a worksheet for repeatable tests.
Windows 11 Wired 802.1X Checklist
Free with a PingLabz account · 6 pages · US Letter PDF
Keep the client profile, certificate trust, Group Policy checks, and session evidence together while setting up wired 802.1X.
Catalyst 9800: First Response Command Reference
Free with a PingLabz account · 6 pages · US Letter PDF
A first-response sequence for AP joins, WLAN and policy mapping, client state, targeted tracing, and incident handoff. Based on Cisco IOS XE 17.12.x documentation.
CML on ESXi: Install Checklist
Free with a PingLabz account · 6 pages · US Letter PDF
Deployment checkpoints, a failure-boundary table, and a reusable CML build record.
Network Devices: Follow the Packet
Free with a PingLabz account · 6 pages · US Letter PDF
Packet-path examples, device-role comparisons, diagnostic commands, and a topology worksheet.
Switch HTTPS Management Checklist
Free with a PingLabz account · 6 pages · US Letter PDF
IOS XE inspection commands, an HTTPS-only example, failure triage, and a change worksheet.
DHCPv6 and RA Decision Reference
Free with a PingLabz account · 6 pages · US Letter PDF
SLAAC/stateful/stateless comparisons, RA flags, exchange triage, and a client evidence sheet.
OSPF Cost Planning Sheet
Free with a PingLabz account · 6 pages · US Letter PDF
Cost tables, bandwidth units, complete path arithmetic, practice answers, and a planning worksheet.
Router Identity and Hostname Checklist
Free with a PingLabz account · 6 pages · US Letter PDF
A naming convention, CLI save checks, dependency checklist, and reusable router identity change record.
Switch Port Status Triage Reference
Free with a PingLabz account · 6 pages · US Letter PDF
Port-state decoding, focused inspection commands, err-disable triage, and a reusable port incident sheet.
Inter-VLAN Routing Path Checklist
Free with a PingLabz account · 6 pages · US Letter PDF
A two-VLAN design table, minimal IOS example, staged path checks, and a routed service acceptance worksheet.
Ping and ICMP Path Reference
Free with a PingLabz account · 6 pages · US Letter PDF
IPv4 ICMP decoding, Linux/Windows command differences, fault-boundary checks, and a path test record.
DSCP and ECN Byte Decoder
Free with a PingLabz account · 6 pages · US Letter PDF
Complete CS/AF/EF tables, ECN decoding, worked hexadecimal bytes, and a marking-versus-treatment worksheet.
TCP/IP Layers and Packet Walk Reference
Free with a PingLabz account · 6 pages · US Letter PDF
A TCP/IP layer map, compact timeline, TCP HTTPS packet walk, field decoder, and reusable troubleshooting worksheet.
EAPOL Packet Reading Reference
Free with a PingLabz account · 6 pages · US Letter PDF
Outer-versus-inner field tables, focused Wireshark filters, exchange interpretation, and a packet evidence worksheet.
802.1X Host Mode Selection Reference
Free with a PingLabz account · 6 pages · US Letter PDF
A four-mode comparison, deployment decision table, session inspection commands, lifecycle checks, and a port selection worksheet.
802.1Q Tag Byte Decoder
Free with a PingLabz account · 6 pages · US Letter PDF
TCI bit formulas, worked byte fragments, PCP/DEI/VID tables, frame-size accounting, Wireshark filters, and a decoding worksheet.
Native VLAN Audit Reference
Free with a PingLabz account · 6 pages · US Letter PDF
A two-end trunk audit, ingress/egress decision table, read-only checks, coordinated correction plan, and native VLAN worksheet.
tcpdump Capture Playbook
Free with a PingLabz account · 5 pages · US Letter PDF
Pick the capture point, narrow the filter, and keep evidence you can use.
IPv4 Subnetting and VLSM Practice Pack
Free with a PingLabz account · 6 pages · US Letter PDF
Work the boundaries, allocate a small site, and check your answers.
LACP Build and Verification Checklist
Free with a PingLabz account · 5 pages · US Letter PDF
Match the peers, prove the VLANs, and test a member failure before signing off.
STP Go-Live Checklist
Free with a PingLabz account · 5 pages · US Letter PDF
Record the intended roots, choose guards by port role, and verify the failure paths.
IOS XE Management Hardening Checklist
Free with a PingLabz account · 5 pages · US Letter PDF
Restrict management access, verify recovery, and record the controls that actually work.
Nmap Port and Firewall Verification Reference
Free with a PingLabz account · 5 pages · US Letter PDF
Choose the scan, read the reason, and compare the same ports before and after a change.
Put it into practice
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